Terms of Use

Version 2 · effective October 16, 2026 · clarifications of October 20, 2026 · operator: Allan Serrano (contact@librumapp.com), Costa Rica · Privacy Policy · Español

This is an English translation provided for convenience. The Spanish version at librumapp.com/terminos is the governing text; if the two ever differ, the Spanish version prevails.

Librum is an app for readers. These terms explain what the service is, what you can do with your account, what each plan includes, who owns what, and how the relationship ends if either of us decides to end it. They are written to be read in full: if something is unclear, write to us and we will rewrite it.

1. What Librum is

Librum is an app (for iPhone, Android and the web) to keep track of your reading: progress, streak, library, author and series guides, notes, book clubs, friends and statistics, with some features assisted by artificial intelligence. It is a living service: we improve it often, and a feature may change or be retired. We make daily backups and announce changes that matter, but the service is provided as is, with no guarantee that it will always be available. You can export your reading and your notes from the app at any time.

2. Your account

• Accounts are created with your email address. At times sign-up may be open by invitation only; an invitation is personal: do not publish or resell it.
• You must be 13 or older. If we learn that an account belongs to someone younger, we delete it.
• Your password is yours: do not share it. If you think someone got into your account, change it from "My account" or write to us.
• One person, one account. You can delete it whenever you want from "My account → Delete my account and data", which erases everything of yours (see the privacy policy).

3. What you can and cannot do

You can use Librum to track your own reading, your club's and your friends'. You may not:

• Use the app to harass, threaten or discriminate against anyone, whether in a club, a review, or a question to an author.
• Post content that is not yours or that you have no right to post (for example, the text of a copyrighted book in a shared note or in a club).
• Impersonate another person, an author or a publisher. Claiming an author profile that is not yours is grounds for closing your account.
• Try to extract other readers' data, break the security of the service, automate the use of the app or its AI features, or use it to train another system.
• Resell access, the guides, the aggregates or any other part of the service.

4. Who owns what

• What is yours stays yours: your notes, your reviews, your library, your progress. So that we can show and sync them, you allow us to store and process them; that permission ends when you delete your account. What you mark as shared (a public review, a message in a club, a question to an author) is shown to the people you chose, with your profile name.
• The reading guides, both the hand-curated ones and those forged with AI, are part of the service. You can use them inside Librum; you may not copy them to publish elsewhere. A guide you forge joins the shared catalog so the next reader can use it.
• Book covers and book data come from public catalogs and from the authors. The rights belong to their owners; if you are one and want an image taken down, see the privacy policy.
• The Librum brand and software are ours.
• Librum is independent. It is not affiliated with, or endorsed by, the authors, publishers, series or adaptations that appear in its guides, except when an author has claimed their profile, in which case the profile says so. The names of authors, titles, series and characters are used only to identify the works. Trademarks and rights belong to their owners.

Copyright notices

If you hold rights to something that appears in Librum (a cover, a synopsis, the text of a guide, or something a reader posted) and believe it is used without permission, write to contact@librumapp.com. Tell us which work it is, where it appears (the link or the screen) and why it is yours. We review it and, where appropriate, remove it within 5 business days. An account that repeatedly posts other people's content is closed.

5. Artificial intelligence features

The copilot, the "up to where I am" summaries, the recommendations and the forged guides use AI models. They are designed not to spoil the story, but a model can be wrong: it can make up a fact about a book, misattribute a quote or, at worst, reveal something you did not want to know. Use them knowing that, and tell us when it happens so we can fix it. Each person has a usage cap that depends on their plan. Summaries and answers describe what the book is about in their own words: they do not reproduce its text or replace reading it.

6. Plans and subscription

Librum has a Free plan, with no time limit, and a paid plan, Librum Codex, that adds features. What each plan includes is shown in the app before you buy. Codex can be bought on Librum's website or inside the phone app; it is the same in both cases and is activated on your Librum account, on all your devices.

• How to buy: as a monthly or annual subscription or, while available, as a one-time lifetime purchase. The price, the duration and any free trial are shown on the purchase screen, in your currency, before you confirm.
  • On the web (Librum → "Codex"): payment is processed by our authorized reseller, which acts as the seller to you (merchant of record), appears on the receipt and collects your country's taxes. Its purchase terms are shown at checkout.
  • In the app: with your App Store (Apple) or Google Play account. The store charges you, not Librum.
• Codex for life: we sometimes offer it as a one-time purchase, for a limited number of people or for a limited time; when the spots run out it is no longer offered. It is paid once, never renews or charges again, and keeps Codex on your Librum account for as long as Librum exists: "for life" refers to the life of the service. If Librum ever stopped operating, we would announce it in advance. What is said below about renewing and cancelling applies only to subscriptions.
• Automatic renewal: the subscription renews automatically at the end of each period, for the same term and at the current price, unless you cancel it at least 24 hours before the period ends. If there is a free trial, the first charge happens when the trial ends unless you cancelled before.
• How to cancel: where you bought it. If on the web, from Librum → "My account" → "My plan" → "Manage my subscription". If in the app, from the subscription settings of your Apple or Google Play account (in the app, "Manage my subscription" takes you there). After cancelling you keep Codex until the end of the period already paid, and then your account goes back to Free, without losing any of your reading.
• Deleting your account does not cancel the subscription: cancel it first where you bought it (on the web or in the store), or you will keep being charged.
• Refunds: Codex purchases are non-refundable, in whole or in part for unused time, except for our mistake (a duplicate charge, a charge after you cancelled in time, or a failure that kept you from using Codex) or as required by your country's consumer protection law. For purchases made on the App Store or Google Play, the store's rules also apply, and the store may refund you on its own (Apple: reportaproblem.apple.com; Google Play: from your order history). Details are in the refund policy (in Spanish).
• Restore: what you bought stays on your Librum account, so signing in is enough. If you bought in the app and change phones, "Restore purchases" on the Codex screen recovers it with the same store account.
• If we change the price or what Codex includes, we announce it beforehand, and the store asks you to confirm when the law or its rules require it.

For purchases made on iPhone, Apple's standard license agreement (EULA) also applies; if anything in these terms contradicts it, that agreement prevails as far as Apple is concerned.

7. Authors, bookstores and publishers

An author, or the imprint that manages them, can claim their profile, publish on it and see aggregated, anonymous figures about their catalog. Bookstores and publishers will be able to see aggregated figures about the books in their catalog. In no case do they receive data that identifies a reader; the exact rules (which figures, the 25-person threshold, how to opt out) are in the privacy policy, and those terms are part of this agreement. Librum does not process payments for books: a point of sale is a link to an outside site and the purchase happens there.

8. Closing an account

You can leave whenever you want. We may close an account that breaks these terms, especially section 3, with notice by email, except in cases of serious abuse, where closing is immediate. Closing works like deleting: your data is erased.

9. Liability

We do what is reasonable to keep Librum working and not lose your reading, but we are not liable for data loss, unavailability, AI errors, or decisions you make based on what the app shows (an average of pages, a recommendation), to the extent permitted by law. Nothing here limits your rights as a consumer under the law.

10. Governing law and contact

These terms are governed by the laws of Costa Rica. For any question or claim, write first to contact@librumapp.com. We reply within 10 business days.

Changes

When these terms change substantively, their version number goes up and we let you know inside the app. The version and date are at the top of this document.