Zydeno · Pagrith

Terms of Use

What the app is for, what it does not do, and where its limits are.

Effective: 2026-10-24 Last updated: 2026-10-24 Version 1.0 Android app

At a glance

Read with clear expectations

A reader for your own files

Pagrith opens DRM-free EPUB and TXT files you are entitled to read. It does not supply books.

A screen is not a printed page

Layout, progress and estimates follow your settings. Check the original before you quote or cite.

The guide is a preference

No promise of faster reading, better comprehension or any health benefit. Take breaks.

Respect rights

Follow copyright and font licences, and never get around DRM.

Legal protections still apply

These terms include limitations and the consumer rights that cannot lawfully be excluded.

Free in the current version

No ads or purchases today. Future versions may add ads or optional paid features; you pay only if you choose to buy through Google Play.

1Agreement to these terms

These Terms of Use (“Terms”) are a legal agreement between you and Zydeno, the developer of Pagrith (“we”, “us”). They apply to the Pagrith app for Android, its updates and everything it shows or produces (together, “the app”). By installing, opening or using the app you accept these Terms. If you do not accept them, do not use the app and uninstall it.

The Privacy Policy explains how the app handles data and forms part of these Terms. If we offer optional features under additional terms in the future, for example paid features, those terms will be shown to you before you accept them and will apply together with these Terms.

You must be old enough to enter into a binding contract where you live, or use the app with the consent and supervision of a parent or guardian who accepts these Terms for you. If you use the app for an organisation, you confirm that you may accept these Terms on its behalf; the consumer-protection provisions of these Terms apply only to consumers.

2What Pagrith provides

Pagrith is an offline reader for reflowable EPUB 2 and EPUB 3 books and plain-text (TXT) files that you add from your own storage. It offers page and scroll layouts with typography, theme and layout settings; a library with collections, sorting and filters; contents, in-book search, footnotes, images and tables; highlights, written notes and bookmarks with export; optional guided-reading modes (word focus, RSVP, line guide and auto-scroll); full and library-state backups; and an interface in 16 languages.

The current version does not open DRM-protected books, PDF or FB2 files, fixed-layout or scripted EPUB publications, media overlays, or vertical writing. Features, supported formats and device support depend on the version you install. Descriptions of possible future features do not make them available in the current version.

3Not professional advice; no safety-critical use

Check results before you rely on them

The layouts, screen and progress figures, reading-time estimates, search results, extracted quotations and detected text encodings that Pagrith shows are produced from models, published methods and data and the values you enter, and they can be wrong. Before relying on them for quoting, citing or publishing a passage, academic, legal or professional work, or any decision where the exact wording or its place in the source matters, check the passage and its location in the original file or the publisher's edition.

The app is a tool to help you plan and calculate. It does not give professional, engineering, legal or other expert advice, and using it does not create a professional relationship with us. You remain responsible for your inputs, for how you interpret the results and for what you decide to do.

Do not use the app as the only basis for a decision where an error could cause death, personal injury, damage to property or the environment, or legal or financial loss, and do not use it in a safety-critical system, in an emergency or to control equipment. Pagrith is a reading tool. It is not a medical, therapeutic, educational-assessment or speed-reading training product, and it does not supply, verify or license the content of any book you open.

4Licence to use the app

Subject to these Terms, we grant you a limited, personal, revocable, non-exclusive, non-transferable and non-sublicensable licence to download, install and use the app on Android devices you own or control, for your own purposes (reading books and documents you are entitled to read, and keeping your own notes about them). The app is licensed to you, not sold.

Except where these Terms, an open-source licence or mandatory law allow it (for example decompiling for interoperability where the law permits), you may not: copy, modify, translate or create derivative works of the app; decompile, disassemble or reverse-engineer it; rent, lend, sell, sublicense, distribute or publish it, or make it available for use by others over a network; remove or change any copyright, trademark or legal notice; or get around any technical limit of the app, including any future purchase, licence or advertising mechanism.

Open-source components and fonts in the app are licensed under their own licences, listed in the app under About → Open-source licenses. Those licences prevail for those components, and nothing in these Terms limits the rights they give you.

5Your books, copyright and DRM

Pagrith does not sell, supply, recommend or verify books. You are solely responsible for having the right to read, copy and keep every file you open, copy into the app or include in a backup, and for complying with the licence terms under which you obtained it. A copy or backup you make with the app is for your own personal use; do not distribute books, quotations or exports in a way the rights holder or the law does not allow.

The app opens DRM-free books only and does not support, remove or get around digital rights management or any other technical protection measure. You must not use the app together with any tool or method that does. Fonts embedded in a book are used only to display that book. If you add your own fonts, you are responsible for complying with their licences.

6Layout, positions and quotations

Pagrith reflows each book to your screen and settings, so its appearance differs from the printed edition and from other reading apps. “Screens” and progress percentages change when you change the layout, and they are not the publisher’s page numbers; publisher page numbers are shown only where the book itself includes them. Reading-time estimates are based on the pace you chose and are approximate. Search can miss text that is in images, unusual markup or encodings.

Quotations you export are taken from the book’s source text, but formatting, footnotes, ruby text, tables and right-to-left or mixed-direction passages can be represented differently. Detected text encodings and chapter breaks in TXT files can be wrong; review the preview before importing. Unsupported content may be shown in a simplified form or skipped, and some files cannot be imported at all.

7Guided reading is a preference, not training or therapy

No promise of faster reading or any health benefit

The guide modes show the text at a pace you choose. Pagrith makes no promise that they improve reading speed, comprehension, memory, attention, eyesight or any educational or health outcome. They are not a medical device, a treatment or an assessment for dyslexia, ADHD, visual or any other condition.

Moving or flashing text, high contrast or low brightness may be uncomfortable for some people. Take regular breaks, and stop if you notice eye strain, headache, dizziness, nausea or any sign of photosensitivity; seek medical advice if symptoms persist. Do not read in the app while driving, cycling, walking in traffic or doing anything else that needs your attention for safety.

8Local data, backups and providers

Your library and reading data stay on your device unless you choose to export or back them up. There is no developer account, server copy or automatic cloud backup. A book read from a folder depends on that folder and its provider remaining available; if the file is moved, changed or deleted there, the app may be unable to open it, although your places and notes are kept. Restoring a backup merges it into your current data after you review a preview; export your current data first. Integrity checks and recovery cannot guarantee recovery from hardware failure, storage exhaustion, corruption or an incompatible archive. Clearing app storage or uninstalling removes private data, including private copies of books.

The system picker may offer cloud providers, and apps you hand text or files to process them under their own terms. Copies saved outside the app are not removed by Delete all. See the Privacy Policy for details.

9Fonts and open-source components

The app bundles the Clear Sans typeface under the Apache License 2.0 and the Vollkorn typeface (© The Vollkorn Project Authors) under the SIL Open Font License 1.1; AndroidX, Jetpack Compose, AndroidX WebKit, Kotlin and kotlinx libraries under the Apache License 2.0; jsoup under the MIT License; and ICU4J under the Unicode License v3. The licence texts and notices are available offline in the app under About, Open-source licences. The sample book, icon and interface artwork were created for Zydeno.

Open-source licences prevail for the components they cover. These Terms do not grant permission to redistribute a font file or library contrary to its own licence. EPUB is a W3C standard; EPUB, W3C, Android, Google Play and other third-party names identify their respective standards, products and services, and their use does not imply endorsement or affiliation.

10Acceptable use

Use the app lawfully. Do not use it to infringe copyright or other rights, to distribute works you are not entitled to share, to circumvent any technical protection measure, to open files designed to attack the app or your device, or to present an exported quotation as an exact or official reproduction without checking it against the source.

You also agree not to:

  • use the app, or data obtained through it, in a way that is unlawful, fraudulent or harmful, or that infringes anyone’s intellectual property, privacy or other rights;
  • enter, store or pass on other people’s personal data with the app unless you are allowed to do so;
  • interfere with or disrupt the app or any service it connects to, introduce malicious code, or try to gain unauthorised access to any system;
  • use automated means to extract data from the app or from the services it uses beyond normal personal use;
  • present the app or its output as official, certified or endorsed by any authority, manufacturer or data provider.

11Your content and our materials

You retain the rights you hold in your own notes, highlights and collections. Books you open remain the property of their rights holders; using them in Pagrith gives neither you nor Zydeno any additional rights in them, and Zydeno claims no rights in your files.

The app, brand, interface artwork, sample book and documentation are protected by intellectual-property law. You may read the sample book in the app; you may not extract and redistribute it as your own material.

The names Zydeno and Pagrith and their logos are our marks. You may refer to them to describe the app accurately, but not use them in a way that suggests endorsement. Names of third parties appear only to identify data sources, file formats, standards or rules; they belong to their owners and do not imply endorsement. If you send us feedback or ideas, we may use them without any obligation to you. We claim no rights in your own projects, data or exported files.

12Price, payments, ads and future paid features

Current version. The current version of Pagrith is provided free of charge, without ads and without in-app purchases or subscriptions. This describes the current version only. It is not a promise that the app, or any feature of it, will remain free of charge or free of ads.

Possible changes. We may at any time introduce advertising; offer paid features, in-app purchases, subscriptions or a paid edition; change which features are free; and set or change prices. Features that are free today may require payment in a future version. We will describe such changes in the store listing and release notes, and in the Privacy Policy where they affect data.

Purchases. Any purchase will be made through Google Play and processed by Google under the Google Play Terms of Service and its payment policies. Prices are shown in Google Play before you buy, including taxes where applicable. Subscriptions renew automatically until you cancel them in Google Play; cancelling stops future renewals. Refunds follow Google Play’s refund policies and your mandatory consumer rights, such as the right of withdrawal in the EU and the UK. Where you ask for immediate access to digital content during a withdrawal period, you may lose that right to the extent the law allows, and you will be asked to confirm this before you buy. You are charged only if you choose to buy something.

Ads. If the app shows ads, they are supplied by third parties. We are not responsible for the content of ads or for the products and services advertised, and any dealings with advertisers are between you and them.

Price changes. We may change prices for future purchases at any time. For an active subscription, we will announce a price increase as Google Play and the law require, and you can cancel before it applies.

13Disclaimer of warranties

We do not promise that every EPUB or TXT file opens or displays as its publisher intended, that layouts, positions, progress figures, search results, quotations, encoding detection or estimates are accurate, that a reading place or note survives a file being changed, moved or made unavailable, that the guide modes suit you, or that backups can be restored on every device or future version.

In particular, and to the maximum extent permitted by law, we do not warrant that the app will meet your requirements, run without interruption, be compatible with your device or be free of errors or harmful components; that defects will be corrected; that data from third-party sources is accurate, complete or current; or that any feature, data source or price will remain available or unchanged.

Nothing in these Terms excludes or limits warranties, guarantees or conformity rights that cannot be excluded under the law that applies to you as a consumer (§15).

14Limitation of liability

To the extent the law permits, we are not responsible for any loss or harm arising from a book that cannot be opened or is displayed incorrectly; errors in quotations, page references or citations; the content of any book you open; loss or corruption of books, reading places, notes or backups; changes to or loss of files at a storage provider; discomfort or injury from using reading or guide modes contrary to these Terms; or disclosure through an app or destination you select. The limitations and mandatory exceptions below govern this clause.

Cap. To the maximum extent permitted by law, our total liability for all claims arising out of or relating to the app or these Terms is limited to the greater of (a) the total amount you paid us for the app and in-app purchases in the 12 months before the event giving rise to the claim and (b) 50 euros or the equivalent in your local currency. For the current version, which is free of charge, you have paid nothing.

These limits apply whatever the legal basis of the claim (contract, tort including negligence, strict liability or otherwise), even if a limited remedy fails of its essential purpose. They are part of the basis on which we make the app available.

What we do not limit. Nothing in these Terms excludes or limits liability for death or personal injury caused by our negligence; for fraud or fraudulent misrepresentation; for damage caused intentionally or by gross negligence; under mandatory product-liability law (including, where it applies, Directive (EU) 2024/2853 on liability for defective products and the UK Consumer Protection Act 1987); or any other liability that cannot be excluded or limited by law. Where the law allows only a partial limitation, our liability is limited to the extent it permits.

15Your rights as a consumer

If you use the app as a consumer, you benefit from the mandatory consumer-protection rules of the country where you live, and nothing in these Terms affects them. In particular:

  • EU and EEA: your statutory rights, including those on the conformity of digital content and digital services under the national rules implementing Directive (EU) 2019/770 where they apply, and mandatory product-liability rules, remain unaffected.
  • United Kingdom: your statutory rights, including under the Consumer Rights Act 2015, remain unaffected.
  • Australia: our services come with guarantees that cannot be excluded under the Australian Consumer Law. Where the law allows us to limit our liability for failing to meet a consumer guarantee for services that are not of a kind ordinarily acquired for personal, domestic or household use, our liability is limited to supplying the services again or paying the cost of having them supplied again.
  • New Zealand: if you acquire the app for business purposes, you agree that the Consumer Guarantees Act 1993 does not apply, to the extent the law permits.
  • United States and Canada: some states and provinces do not allow the exclusion of implied warranties or the limitation of incidental or consequential damages, so some of the exclusions above may not apply to you. In Québec, the mandatory provisions of the Consumer Protection Act apply.

16Indemnity

To the extent permitted by law, you agree to indemnify and hold harmless the developer against claims, liabilities, damages, losses and reasonable costs, including reasonable legal fees, brought by third parties and arising out of (a) the books, fonts and other files you import, copy, export or share, your notes and quotations, and any use of a work that you are not entitled to make, (b) your breach of these Terms, (c) your violation of any law or of the rights of others, or (d) output of the app that you provide to another person, such as a client or employer. This does not apply to the extent a claim is caused by our own breach of these Terms or our negligence, or where local consumer law does not allow it.

17Changes, availability and termination

To the extent the law allows, we may change, update, add or remove features, change data sources, and suspend or discontinue the app, in whole or in part or in any country, at any time. We are not obliged to provide updates, maintenance or support, except where mandatory consumer law requires updates to keep the app in conformity.

You may stop using the app at any time by uninstalling it. Your licence ends automatically if you materially breach these Terms, and we may end or suspend it where the law requires. When it ends, you must stop using the app and uninstall it. Your data stays on your device under your control, so export what you need first.

Provisions that by their nature should continue after these Terms end continue to apply, including those on intellectual property, disclaimers, limitation of liability, indemnity, governing law and general provisions.

18Google Play

You obtain the app through Google Play. Your download, and any purchase you make, is also governed by the Google Play Terms of Service and Google’s policies. Where these Terms conflict with Google Play’s terms on the distribution, billing, refunds or licensing of apps obtained from Google Play, Google Play’s terms prevail to the extent of that conflict.

These Terms are between you and the developer only, not Google. Google is not responsible for the app or its content and has no obligation to provide maintenance or support for it. Android and Google Play are trademarks of Google LLC.

19Governing law and disputes

These Terms, and any dispute or claim arising out of or in connection with them or the app, including non-contractual disputes, are governed by the law of the country in which the developer is established, without regard to its conflict-of-laws rules. The United Nations Convention on Contracts for the International Sale of Goods does not apply.

The courts competent for the place where the developer is established have jurisdiction. If you are a consumer, you keep the protection of the mandatory provisions of the law of your country of residence, and you may bring proceedings in the courts of that country where that law allows it.

Before starting formal proceedings, please write to [email protected] and give us at least 30 days to try to resolve the issue informally. This does not affect any time limit that applies to you by law or your right to use an alternative dispute-resolution body available to consumers in your country.

20General provisions

  • Entire agreement. These Terms, the Privacy Policy and any additional terms you accept for optional features are the entire agreement between you and us about the app.
  • Severability. If a provision is found invalid or unenforceable, it applies to the maximum extent permitted and the rest remains in effect.
  • No waiver. Not enforcing a provision is not a waiver of the right to enforce it later.
  • Assignment. You may not transfer your rights or obligations under these Terms. We may transfer ours, for example together with the app to another developer; where the law requires, this will not reduce your rights as a consumer.
  • Events beyond our control. We are not responsible for failure or delay caused by events beyond our reasonable control, such as outages of networks, devices or third-party services, natural disasters or acts of authorities.
  • Export and sanctions. You agree to use the app in compliance with applicable export-control and sanctions laws.
  • No third-party rights. No one other than you and us may enforce these Terms.
  • Notices. We may give notices in the app, in its store listing or release notes, or on this page. You can send notices to [email protected].
  • Language. These Terms are written in English, which is the binding version. A translation, if offered, is for convenience only, unless the law of your country requires otherwise.

21Changes to these terms

We may update these Terms, for example when we change the app, introduce ads or paid features (§12), or when the law changes. The effective date and version at the top of this page show which version applies, and the version history (§22) summarises the changes.

For material changes we give reasonable notice before they take effect, for example in the release notes or in the app. If you keep using the app after the changes take effect, you accept the updated Terms; if you do not agree, stop using the app and uninstall it. Changes do not apply to disputes that arose before they took effect.

22Version history

VersionEffectiveChanges
1.02026-10-24Initial Android terms prepared for release: reading your own DRM-free files, copyright and DRM, layout and quotation limits, guided-reading disclaimer, local files and backups, fonts and open-source notices, consumer rights and possible future changes.

23Contact

See also the Privacy Policy.