Terms & Conditions

Bookify, Inc. · Bookster and Bookster Challenges · bookster.ai · bookster.marketing
Effective date: September 17, 2026 · Version 2.2 (adds the play-through rule for Bonus Credits)

Please read these Terms and Conditions («Terms», «Terms and Conditions») carefully before using Bookster («the App») operated by Bookify, Inc. («us», «we», or «our»).

Your access to and use of the App is conditioned on your acceptance of and compliance with these Terms. These Terms apply to all users and others who access or use the App.

By accessing or using the App, you agree to be bound by these Terms. If you disagree with any part of the terms, then you may not access the App.

Intellectual Property

All content, features, and functionality (including but not limited to all information, text, graphics, images, designs, and the selection and arrangement thereof) of the App are the exclusive property of Bookify, Inc. and are protected by copyright, trademark, and other intellectual property laws.

User Accounts

To access some features of the App, you may be required to register for an account. When you register, you agree to provide accurate and complete information and to update this information as necessary to keep it accurate and complete. You are responsible for maintaining the confidentiality of your account password and for all activities that occur under your account. You agree to notify us immediately of any unauthorized use of your account or any other breach of security.

User Conduct

By using the App, you agree not to:

• Use the App for any illegal, unauthorized, or unethical purpose;
• Attempt to gain unauthorized access to the App or its systems;
• Upload, transmit or distribute any computer viruses, worms, or any software intended to damage or alter a computer system;
• Interfere with or disrupt the App or servers or networks connected to the App;
• Harass, threaten, or harm any other user or any third party in any way.

We reserve the right to investigate and take appropriate legal action against anyone who, in our sole discretion, violates these Terms.

Subscription Plans and Payment

The App may offer subscription plans with different features and benefits. When you subscribe to a plan, you agree to pay the fees associated with that plan. Subscription fees will be charged on a recurring basis until you cancel your subscription.

We reserve the right to change the pricing for our subscription plans at any time. We will provide you with prior notice of any such changes, and you may cancel your subscription if you do not agree with the new pricing.

Bookster Challenges and Presale Credits

This section applies to Bookster Challenges («Challenges») and to the presale credits sold at bookster.marketing («Credits»). Where it conflicts with the general terms above, this section prevails for Challenges and Credits.

Definitions

• Challenge: a fixed-length learning program inside the App, on one topic, built from daily lessons and quizzes. Each Challenge publishes its own rules before you enter: length, number of lessons per day, quiz pass mark, entry amount, minimum number of participants, start date and prize format.
• Entry: the amount of Credits you stake to join a Challenge.
• Credits: a prepaid balance, denominated in US dollars, used to pay Entries. Your balance has two parts: Purchased Credits, the amount you actually paid, and Bonus Credits. You can buy Credits or obtain them free of charge by mail (see Free entry by mail).
• Bonus Credits: Credits that Bookster gifts you as an incentive to buy, on top of what you paid (for example, the $50 package gives $50 in Purchased Credits plus $25 in Bonus Credits, $75 in total). Bonus Credits are promotional and are subject to the play-through rule in Withdrawals and play-through. Credits obtained free of charge by mail are not Bonus Credits.
• Play-through: the total amount of Credits you have staked as Entries. Staking $10 in Entries is $10 of play-through, whether or not you finish the Challenge.
• Prize Pot: the amount distributed among Finishers of a Challenge. It is made of the Entries forfeited by participants who did not finish, plus any amount Bookster sponsors for that Challenge.
• Finisher: a participant who completes every day of the Challenge according to its rules.

Buying Credits

• Credits are sold through Whop, our payment provider. Whop processes your payment and, where applicable, calculates, collects and remits sales tax or VAT on the purchase. Tax is added at checkout on top of the package price. Your card statement will show the charge as WHOP*BOOKSTERCHALLENGE.
• Credits are not transferable, cannot be sold or exchanged, and have no cash value until they have been played (see Withdrawals and play-through below).
• Credits do not expire, but Bookster may set an expiry with at least 90 days' notice by email.
• You may buy only for yourself. One account per person.

Free entry by mail (no purchase necessary)

• No purchase is necessary to take part in Challenges. You can obtain Credits free of charge by mail, under the rules in this section. Credits obtained this way are identical to purchased Credits: same Entries, same Challenges, same Prize Pot and same payouts. Buying Credits does not improve your results: a Challenge is won only by completing its lessons and passing its quizzes.
• How to request free Credits. Print the free-entry letter template published at bookster.marketing/free-entry (we also send it by email on request to support@bookster.ai), complete every field, sign it by hand and mail it, one letter per envelope, with sufficient postage, to: Bookify, Inc. — Bookster Challenges Free Entry, 92 SW 3rd Street, Apt 2906, Miami, FL 33130, USA. The letter must state your full name, the email address of your Bookster account, your postal address, your date of birth, the date, and the declaration printed on the template that you have read and accept these Terms and the rules of the Challenges. Letters that are incomplete, illegible, unsigned, photocopied or mechanically reproduced, sent without the current template, or that name an account that does not exist or belongs to someone else are void.
• What each letter is worth. Each valid letter is credited with US$1.00 in Credits to the account it names. We process letters within 30 days of receipt; the Credits are available in your balance once processed, and we confirm by email.
• Limits. A maximum of three (3) letters per person per day, by postmark date; additional letters for the same day are void. One account per person. Letters are not returned and postage is not reimbursed. We may reject requests that we reasonably believe to be fraudulent, automated or in breach of the Fair play rules, and we keep a record of every letter received and processed.
• Where it applies. Free entry by mail is available to eligible participants resident in the United States. Where the law of another country or state requires a free method of entry, write to support@bookster.ai and we will provide one. The Eligibility rules apply to every participant, however they obtained their Credits.

How a Challenge works

• You join a Challenge by staking an Entry from your Credits before it starts. Your Entry goes into the Prize Pot.
• Each day of the Challenge you must complete the day's lessons and pass the quiz with the published minimum score. You get one attempt per quiz. Days are counted in Pacific Time and close at midnight.
• If you miss a day or fail the quiz, you are eliminated and your Entry stays in the Prize Pot. Where a Challenge offers a re-entry or a shield (a power-up that protects you against one missed day), its price and conditions are shown before you use it; the re-entry price is split between the Prize Pot and Bookster as stated.
• Bookster provides the lessons from books, podcasts and articles it selects. Bookster may correct a lesson or a quiz; if a technical error on our side prevents you from completing a day, we will restore your participation.
• A Challenge that does not reach its minimum number of participants by its start date is cancelled and Entries are returned to your Credits balance in full.

Prize Pot, winning and payouts

• Guaranteed Win format: every Finisher receives their Entry back in full, plus an equal share of the Prize Pot. Winner Takes All format: the Prize Pot is awarded as stated in that Challenge's rules. The format is shown before you enter.
• Bookster's fee: Bookster retains a service fee, stated for each Challenge before you enter, calculated only on the forfeited Entries distributed to Finishers. It is never taken from a Finisher's own Entry: a Finisher always gets their full stake back.
• Payouts are credited to your Credits balance within 7 days after the Challenge ends. Amounts shown before a Challenge starts (sponsored pots, example payouts) are estimates or minimums, not guarantees, except where expressly marked as guaranteed.
• Before paying out we may ask you to verify your identity. Any taxes on prizes are your responsibility.

Withdrawals and play-through

• Purchased Credits unlock at 1x. Once you have staked in Entries the amount you paid for, you can withdraw what remains in your balance.
• Bonus Credits unlock at 3x, and only afterwards. Bonus Credits start counting as played only once your Purchased Credits have been played in full at 1x; from that point you must stake three times the Bonus Credits before they can be withdrawn.
• Example. You buy the $50 package: $50 in Purchased Credits and $25 in Bonus Credits. After staking $50 in Entries you can withdraw everything in your balance except those $25. After a further $75 staked — $125 in total — your whole balance, including anything you have won, can be withdrawn.
• Credits obtained free of charge by mail are not Bonus Credits: they carry the same 1x play-through as Purchased Credits.
• Bonus Credits can always be staked in Challenges and won with. The play-through affects only when you can take money out; it never affects your chances in a Challenge.
• This rule applies to Credits bought on or after September 17, 2026. Credits bought before that date keep the 1x play-through under which they were sold.
• Withdrawals and refunds are governed by our Return & Refund Policy, which forms part of these Terms.

Eligibility

• You must be at least 18 years old, able to enter into a binding contract, and not resident in a jurisdiction where participation in paid skill contests is prohibited. Challenges are contests of skill: the outcome depends solely on completing the lessons and passing the quizzes; there is no element of chance.
• Challenges are void where prohibited by law. Bookster may restrict participation by country or state and may verify your location.

Fair play

You must not use more than one account, share or obtain quiz answers, use automation or any tool to complete lessons or quizzes on your behalf, exploit a bug, or otherwise cheat. If we determine, acting reasonably, that you broke these rules, we may eliminate you from the Challenge, forfeit your Entry to the Prize Pot, withhold payouts, and close your account.

Changes and cancellation by Bookster

Bookster may change a Challenge's rules, dates or sponsored amounts before it starts; if you disagree, you can leave and your Entry returns to your Credits balance. If Bookster cancels a Challenge after it starts because of a technical failure or force majeure, Entries are returned to all participants and any sponsored amount is not paid.

Communications

By buying Credits you agree to receive transactional messages about your purchase and your Challenges by email and, at the WhatsApp number you provide, by WhatsApp. You can opt out of non-essential messages at any time; transactional notices about a running Challenge may still be sent.

Disputes about a purchase

If you have a problem with a purchase, contact us first at support@bookster.ai or on WhatsApp at +1 (786) 674-9806; most issues are resolved the same day. You may also open a case in Whop's Resolution Center. The Governing Law and Jurisdiction section above applies to any remaining dispute.

Cancellation and Refunds

You may cancel your subscription at any time. Upon cancellation, your subscription will terminate at the end of the current billing period. No refunds will be provided for any unused portion of your subscription period.

Modifications to the App

We reserve the right to modify, suspend or discontinue, temporarily or permanently, the App or any service provided by the App, with or without notice, and without liability to you.

Termination

We may terminate or suspend your access to the App immediately, without prior notice or liability, for any reason whatsoever, including, without limitation, if you breach the Terms. Upon termination, your right to use the App will cease immediately.

Disclaimer of Warranties

The App is provided on an «as is» and «as available» basis. We disclaim all warranties, express or implied, including, but not limited to, implied warranties of merchantability, fitness for a particular purpose, and non-infringement.

Limitation of Liability

In no event shall Bookify, Inc. or its affiliates, employees, agents, or licensors be liable for any direct, indirect, incidental, special, consequential or punitive damages, including, without limitation, loss of profits, data, use, or goodwill, arising out of or in connection with your access to, use of, or inability to use the App, whether based on warranty, contract, tort (including negligence), or any other legal theory, whether or not we have been informed of the possibility of such damage.

Indemnification

You agree to defend, indemnify, and hold harmless Bookify, Inc., its affiliates, employees, agents, and licensors from and against any and all claims, damages, obligations, losses, liabilities, costs, and expenses (including but not limited to attorney’s fees) arising from:

Your use of and access to the App;

Your violation of any term of these Terms;

Your violation of any third-party rights, including, without limitation, any copyright, trademark, property, or privacy right; or

Any claim that your use of the App caused damage to a third party.

This indemnification obligation will survive the termination of these Terms and your use of the App.

Governing Law and Jurisdiction

These Terms shall be governed by and construed in accordance with the laws of Delaware, without regard to its conflict of law provisions. You agree to submit to the exclusive jurisdiction of the courts located in Delaware to resolve any dispute arising out of these Terms or your use of the App.

Changes to Terms

We reserve the right, at our sole discretion, to modify or replace these Terms at any time. If a revision is material, we will provide at least 30 days’ notice prior to any new terms taking effect. What constitutes a material change will be determined at our sole discretion.

By continuing to access or use the App after those revisions become effective, you agree to be bound by the revised Terms. If you do not agree to the new Terms, you must stop using the App.

Contact Information

If you have any questions about these Terms, please contact us at support@bookster.ai or, for Bookster Challenges, on WhatsApp at +1 (786) 674-9806. Postal mail: Bookify, Inc., 92 SW 3rd Street, Apt 2906, Miami, FL 33130, USA.

Severability

If any provision of these Terms is held to be invalid or unenforceable by a court, the remaining provisions of these Terms will remain in effect.

Entire Agreement

These Terms constitute the entire agreement between you and Bookify, Inc. regarding your use of the App, superseding any prior agreements between you and Bookify, Inc. concerning your use of the App.

Versión en español — Bookster Challenges y créditos de preventa

Esta traducción se ofrece por conveniencia. En caso de conflicto prevalece la versión en inglés. Las secciones generales sobre la App rigen en su versión en inglés.

Definiciones

• Challenge: un programa de aprendizaje de duración fija dentro de la App, sobre un tema, hecho de lecciones y quizzes diarios. Cada Challenge publica sus reglas antes de que te inscribas: duración, lecciones por día, puntaje mínimo del quiz, monto de la entrada, mínimo de participantes, fecha de inicio y formato de premio.
• Entrada: los Créditos que apuestas para inscribirte en un Challenge.
• Créditos: un saldo prepago en dólares con el que se pagan las Entradas. Tu saldo tiene dos partes: los Créditos comprados, que es lo que efectivamente pagaste, y los Créditos de bonificación. Puedes comprarlos u obtenerlos sin costo por correo postal (ver Entrada gratuita por correo).
• Créditos de bonificación: los Créditos que Bookster te regala como incentivo para comprar, además de lo que pagaste (por ejemplo, el paquete de $50 da $50 en Créditos comprados más $25 en Créditos de bonificación, $75 en total). Son promocionales y están sujetos a la regla de play-through de Retiros y play-through. Los Créditos obtenidos sin costo por correo postal no son Créditos de bonificación.
• Play-through: el total de Créditos que apostaste como Entradas. Apostar $10 en Entradas son $10 de play-through, termines o no el Challenge.
• Pozo: lo que se reparte entre los Finalistas de un Challenge. Se forma con las Entradas de quienes no terminaron, más lo que Bookster aporte para ese Challenge.
• Finalista: quien completa todos los días del Challenge según sus reglas.

Compra de Créditos

• Los Créditos se venden a través de Whop, nuestro proveedor de pagos, que procesa el cobro y, donde corresponda, calcula, cobra y remite el impuesto a las ventas o IVA. El impuesto se suma al precio del paquete al pagar. En tu tarjeta el cargo aparece como WHOP*BOOKSTERCHALLENGE.
• Los Créditos no son transferibles, no se pueden vender ni canjear y no tienen valor en efectivo hasta que los hayas jugado (ver Retiros y play-through más abajo).
• Los Créditos no vencen; Bookster puede fijar un vencimiento avisando por email con al menos 90 días.
• Solo puedes comprar para ti. Una cuenta por persona.

Entrada gratuita por correo (no es necesario comprar)

• No es necesario comprar para participar en los Challenges. Puedes obtener Créditos sin costo por correo postal, según las reglas de esta sección. Esos Créditos son idénticos a los comprados: mismas Entradas, mismos Challenges, mismo Pozo y mismos pagos. Comprar Créditos no mejora tu resultado: un Challenge se gana únicamente completando sus lecciones y aprobando sus quizzes.
• Cómo pedir Créditos gratuitos. Imprime la plantilla de carta publicada en bookster.marketing/free-entry (también la enviamos por email si la pides a support@bookster.ai), completa todos los campos, fírmala a mano y envíala, una carta por sobre, con franqueo suficiente, a: Bookify, Inc. — Bookster Challenges Free Entry, 92 SW 3rd Street, Apt 2906, Miami, FL 33130, USA. La carta debe indicar tu nombre completo, el email de tu cuenta de Bookster, tu dirección postal, tu fecha de nacimiento, la fecha, y la declaración impresa en la plantilla de que leíste y aceptas estos Términos y las reglas de los Challenges. Son nulas las cartas incompletas, ilegibles, sin firma, fotocopiadas o reproducidas mecánicamente, enviadas sin la plantilla vigente, o que indiquen una cuenta inexistente o ajena.
• Cuánto vale cada carta. Cada carta válida se acredita con US$1 en Créditos en la cuenta indicada. Procesamos las cartas dentro de los 30 días de recibidas; los Créditos quedan disponibles en tu saldo al procesarse y lo confirmamos por email.
• Límites. Máximo tres (3) cartas por persona por día, según el matasellos; las cartas adicionales del mismo día son nulas. Una cuenta por persona. Las cartas no se devuelven y el franqueo no se reembolsa. Podemos rechazar pedidos que razonablemente consideremos fraudulentos, automatizados o contrarios a las reglas de Juego limpio, y llevamos un registro de cada carta recibida y procesada.
• Dónde aplica. La entrada gratuita por correo está disponible para participantes elegibles residentes en Estados Unidos. Si la ley de otro país o estado exige una vía de entrada gratuita, escríbenos a support@bookster.ai y te la ofreceremos. Las reglas de Elegibilidad aplican a todos los participantes, sea cual sea el origen de sus Créditos.

Cómo funciona un Challenge

• Te inscribes apostando una Entrada de tus Créditos antes de que empiece. Tu Entrada va al Pozo.
• Cada día debes completar las lecciones y aprobar el quiz con el puntaje mínimo publicado. Tienes un intento por quiz. Los días se cuentan en hora del Pacífico y cierran a medianoche.
• Si faltas un día o no apruebas el quiz, quedas eliminado y tu Entrada se queda en el Pozo. Si un Challenge ofrece reingreso o un escudo (un power-up que te protege de un día perdido), su precio y condiciones se muestran antes de usarlo; el precio del reingreso se reparte entre el Pozo y Bookster como se indique.
• Bookster elige las lecciones a partir de libros, podcasts y artículos. Puede corregir una lección o un quiz; si un error técnico nuestro te impide completar un día, restauramos tu participación.
• Un Challenge que no alcanza su mínimo de participantes en la fecha de inicio se cancela y las Entradas vuelven íntegras a tu saldo.

Pozo, premios y pagos

• Formato Guaranteed Win: cada Finalista recupera su Entrada completa más una parte igual del Pozo. Formato Winner Takes All: el Pozo se otorga como indiquen las reglas de ese Challenge. El formato se muestra antes de inscribirte.
• Comisión de Bookster: Bookster retiene una comisión, indicada en cada Challenge antes de inscribirte, calculada solo sobre las Entradas perdidas que se reparten entre los Finalistas. Nunca sale de la Entrada de un Finalista: un Finalista siempre recupera su apuesta completa.
• Los premios se acreditan en tu saldo de Créditos dentro de los 7 días posteriores al cierre del Challenge. Los montos mostrados antes del inicio (pozos aportados, ejemplos de pago) son estimaciones o mínimos, no garantías, salvo que se indique expresamente lo contrario.
• Antes de pagar podemos pedirte verificar tu identidad. Los impuestos sobre premios son tu responsabilidad.

Retiros y play-through

• Los Créditos comprados se liberan con 1x. Una vez que apostaste en Entradas el monto que pagaste, puedes retirar lo que quede en tu saldo.
• Los Créditos de bonificación se liberan con 3x, y recién después. Los Créditos de bonificación empiezan a contar como jugados solo cuando tus Créditos comprados se jugaron por completo a 1x; a partir de ahí tienes que apostar tres veces los Créditos de bonificación para poder retirarlos.
• Ejemplo. Compras el paquete de $50: $50 en Créditos comprados y $25 en Créditos de bonificación. Después de apostar $50 en Entradas puedes retirar todo tu saldo menos esos $25. Después de apostar $75 más — $125 en total — puedes retirar todo tu saldo, incluido lo que hayas ganado.
• Los Créditos obtenidos sin costo por correo postal no son Créditos de bonificación: tienen el mismo play-through de 1x que los Créditos comprados.
• Los Créditos de bonificación siempre se pueden apostar en los Challenges y ganar con ellos. El play-through afecta solo cuándo puedes sacar el dinero; nunca afecta tus chances en un Challenge.
• Esta regla aplica a los Créditos comprados desde el 17 de septiembre de 2026. Los Créditos comprados antes de esa fecha conservan el play-through de 1x con el que se vendieron.
• Los retiros y reembolsos se rigen por nuestra Política de Reembolsos, que forma parte de estos Términos.

Elegibilidad

• Debes tener al menos 18 años, capacidad para contratar y no residir en una jurisdicción donde los concursos de habilidad con entrada paga estén prohibidos. Los Challenges son concursos de habilidad: el resultado depende solo de completar las lecciones y aprobar los quizzes; no hay azar.
• Los Challenges no tienen validez donde la ley los prohíba. Bookster puede restringir la participación por país o estado y verificar tu ubicación.

Juego limpio

No puedes usar más de una cuenta, compartir u obtener respuestas de los quizzes, usar automatizaciones o herramientas que completen lecciones o quizzes por ti, aprovechar un error ni hacer trampa de ningún modo. Si determinamos, con criterio razonable, que rompiste estas reglas, podemos eliminarte del Challenge, dejar tu Entrada en el Pozo, retener premios y cerrar tu cuenta.

Cambios y cancelación por parte de Bookster

Bookster puede cambiar reglas, fechas o aportes de un Challenge antes de que empiece; si no estás de acuerdo, puedes salir y tu Entrada vuelve a tu saldo. Si Bookster cancela un Challenge ya iniciado por una falla técnica o fuerza mayor, las Entradas vuelven a todos los participantes y el aporte de Bookster no se paga.

Comunicaciones

Al comprar Créditos aceptas recibir mensajes transaccionales sobre tu compra y tus Challenges por email y, al número que indiques, por WhatsApp. Puedes darte de baja de los mensajes no esenciales cuando quieras; los avisos de un Challenge en curso pueden seguir enviándose.

Reclamos sobre una compra

Si tienes un problema con una compra, escríbenos primero a support@bookster.ai o por WhatsApp al +1 (786) 674-9806; la mayoría se resuelve el mismo día. También puedes abrir un caso en el Resolution Center de Whop. Para cualquier otra disputa aplica la sección de ley aplicable y jurisdicción.