Privacy Policy

1Who we are

Pagrith is an offline reader for EPUB and plain-text (TXT) books that you already have, developed by Zydeno. This policy explains what happens to your books, reading places, highlights, notes and settings, and what happens if you choose to contact us at [email protected].

2What this policy covers

This policy covers the Pagrith Android app. It does not cover the independent document and cloud-storage providers, dictionary or translation apps, PDF viewers, browsers or e-mail apps that you choose to use with it. Their own terms and privacy policies govern the data you give them.

The app works without an account or an internet connection. The app has no ads and no analytics.

3What the developer does not collect

The app does not send the developer your books or their contents, file or folder names, titles and authors, reading places, highlights, notes, bookmarks, collections, search queries, reading pace or reading time, settings or device information. It has no account registration, no advertising SDK, no analytics SDK and no third-party crash reporter. It does not request location, contacts, camera, microphone, phone, notification or storage-wide access.

We do not receive, sell or share your in-app data, use it for advertising or train models on it. Pagrith keeps no record of what or how much you read for anyone but you: progress, optional session timers and estimates are shown only to you, on your device. It does not ask for your name or age and has no reading scores, streaks or rankings.

4Your library and reading data on your device

Pagrith stores its working data in Android app-private storage (a local database, a preferences store and files). Depending on how you use the app, this includes:

• Library records: each book’s title, author, language, series, cover image (if the book has one), file size and checksums, the collection you put it in, and either a reference to the file in the folder you chose or the private copy you asked for.
• Reading data: your reading place in each book, return points (for example before you jump to the contents, a search result or a footnote), layout snapshots used to restore the same sentence, and an interrupted-import journal used for recovery.
• Your annotations: highlights, written notes, bookmarks and the quoted passages they belong to, with dates.
• Settings and per-book profiles: typeface, size, spacing, margins, theme and contrast, page or scroll layout, guide mode and pace, units, language, haptics and other preferences.
• Derived caches: bounded, parsed chapter text, a search index and layout data, so books open quickly. They are rebuilt when needed and removed when a book changes or is removed.
• Fonts you add (see “Fonts you add”).

Opening, parsing, indexing, searching, laying out and pacing books all run on your device. A book’s declared language is used only for text direction, line-breaking and hyphenation. Region and language are used only to choose defaults (see “Permissions and device access”). An optional built-in sample book, written for Pagrith, is bundled with the app and is kept separate from your library.

5How the app accesses your books

Only what you pick. Pagrith reads books only through Android’s system file picker (the Storage Access Framework). When you add single files, Android gives the app access to those files only. When you choose a folder, Android gives the app read-only access to that one folder. The app then lists the compatible books in it when you open the library or tap Rescan, and imports only the books you select. It never scans your whole device, does not ask for storage-wide or all-files access, and never modifies, renames or deletes the files in your folders.

Read from folder or copy to app. In “Read from folder” mode the book stays where it is, and the app keeps the folder permission and the file’s size, modification date and checksums. These let it notice when the file has changed, so it never mixes an old and a new version: it then tells you, and keeps your place and notes. In “Copy to app” mode a copy of the original file is stored in app-private storage. If you remove a folder permission or the file disappears, your places and notes are kept and the book is shown as unavailable until you relink it. Removing a folder permission never deletes anything in that folder.

Cloud and removable storage. If the folder or file you pick belongs to a cloud-storage app or a removable card, that provider supplies the file to Pagrith and may download, cache or log it under its own terms. Pagrith itself has no internet access.

Copy-protected books. Pagrith opens DRM-free books only. It recognises books protected by DRM and does not open or decrypt them. Some publishers lightly scramble the fonts embedded in an otherwise DRM-free book, a standard EPUB technique that is not DRM. Pagrith unscrambles such fonts on the device only to display that same book, and never offers them as separate font files.

6No internet access from the app

The current Android app does not declare the INTERNET permission. It has no backend, external API requests, automatic uploads, remote downloads, book store, catalogue or cloud synchronisation.

Book pages are displayed with Android’s built-in WebView component, restricted to the app’s own local copy of the book’s text, images and fonts. It cannot load web addresses, images or fonts from the internet, and scripts contained in books are not run. Pagrith does not fetch anything a book refers to online.

When you open the privacy policy, the terms or a support address, the app hands the address to your own browser or e-mail app. The website host can process ordinary web-request data, such as your IP address, under its own policy. Nothing is sent by Pagrith itself, and a support e-mail is sent only if you choose to send it.

7Dictionary, translation, links and PDF files

Look up and translate. When you select text, Android can show entries from dictionary, translation or similar apps installed on your phone. If you tap one, only the selected text is passed to that app, which may process it, including online, under its own privacy policy. Pagrith does not know what that app does with it.

Links inside books. When you tap a link that points outside the book, Pagrith shows the full address and opens another app only after you confirm. It never opens or loads such a link by itself.

PDF files. Pagrith does not read PDF files. If you choose to open one in another app, Android gives that app temporary access to that one file.

8Export, backup and restore

Notes. You can export highlights, notes and bookmarks as Markdown, plain text or W3C Web Annotation JSON, for a selection or for everything, and save the file to a location you choose in the system picker.

Backups. You choose between two kinds. A Full library backup contains the original files of your books (both copies and books read from folders), fonts you added, and all places, notes, bookmarks, profiles, collections and settings. A Library state backup contains the same reading data and fonts but no book files. A backup is a single archive file with a manifest and checksums. It is a copy of your private reading data, is not password-encrypted by Pagrith, and contains no folder permissions.

Restore. Only the archive you select is read. The app validates it on your device, shows what it will add or change, and merges it only after you confirm; the newer reading place of each book wins and the other is kept as a named return point. Restoring does not send anything to Zydeno.

Your destination matters. A cloud-storage provider, removable card or recipient app receives the file you give it, under its own policy. This is a transfer you start, not automatic synchronisation. Zydeno receives no copy unless you deliberately send one to support.

9Fonts you add

You can add your own TrueType or OpenType font files through the system picker. The app checks each file on your device and stores a private copy with its original name and checksum, together with a note that it is for your personal use. Added fonts are used only for displaying books, are included in your own backups, and are never sent to Zydeno or used in our store material. You are responsible for having the right to use any font you add.

10Permissions and device access

The current app asks for no runtime permission. It does not request internet, location, microphone, camera, contacts, phone, notification, storage-wide, all-files or Accessibility-service access. Android libraries add an internal, app-scoped permission that grants no access to your personal files or sensors, and the advertising-ID permission is removed from the app. Access to your files comes only from the system picker, as described in “How the app accesses your books”.

Region. To choose sensible default formats (for example for dates, numbers and storage sizes), the app reads your device’s region locally: the country reported by your SIM or network through Android’s standard telephony information (no permission is needed, and no phone number or subscriber identifier is read) and the region of your system language. This value is used on the device only and is not sent to us or anyone else. You can change each format in Settings.

Haptics and display. The app uses your phone’s standard haptic feedback, which you can switch off in the app or in Android. Optional brightness and dimming controls apply only while you read and are cleared when you leave the book. Volume-key page turns, if you switch them on, work only while the book is on screen.

11Your controls and deletion

You can remove a book (its private copy and reading data), delete notes and bookmarks, reset a book’s settings, remove folder permissions, export your notes or a backup, and use Settings, Your data, Delete all to remove the library, private copies, places, notes, profiles, added fonts and folder permissions after a separate confirmation. The app offers an export first. Deleting in the app never deletes the original files in your folders or backups saved elsewhere.

Automatic Android backup is disabled, and the app’s extraction rules exclude cloud backup and device-to-device transfer. To move to another phone, save a backup and restore it yourself. If the device is lost or app storage is cleared without a usable backup, the developer cannot restore your data.

Clearing Pagrith’s storage in Android Settings or uninstalling it removes its app-private data. Copies you exported, files in your own folders and text you sent to another app are not affected; remove those separately where they are.

12Legal bases for processing

Where the EU or UK GDPR, or a similar law such as the Swiss FADP or Brazil’s LGPD, applies, these are the legal bases for the limited processing described in this policy:

The app makes no automated decisions that have legal or similarly significant effects on you, does not build a profile of you and does not analyse special categories of personal data. The books you read and the notes you write can reveal sensitive things about you, such as your beliefs, health or interests; they stay on your device or with the storage provider you chose, and the developer receives none of them.

13How long information is kept

App data stays on your device until you remove it, clear app storage or uninstall the app. Caches are kept within fixed limits and rebuilt as needed. Recovery journals and undo records are kept only for as long as they are needed to finish an interrupted operation or to undo a removal. Deleting a visible item is not a guarantee that every historical byte is forensically erased from the device.

Exports and backups you saved through the system picker remain under your control outside the app and may outlast uninstallation.

14Your privacy rights

Privacy laws in many countries give you rights over your personal data. Because Pagrith keeps your data on your phone and the developer does not receive it, most of these rights are in your own hands: you can view, correct, export and delete everything in the app (§11) and withdraw permissions in Android Settings. For data you have sent us, such as e-mails, write to [email protected].

EU and UK representative. The individual developer does not process personal data of people in the EU/EEA or the UK except occasional e-mails you choose to send to support. This occasional processing does not involve large-scale processing of special-category or criminal-offence data and is unlikely to result in a risk to your rights and freedoms. Under Article 27(2)(a) GDPR and Article 27(2)(a) UK GDPR, it does not require an EU or UK representative, so none is appointed. Contact us directly at [email protected]; you can also complain to your local supervisory authority.

Rights by region. A summary; the law where you live decides the details.

• European Union, EEA, United Kingdom and Switzerland (GDPR, UK GDPR, Swiss FADP): access, rectification, erasure, restriction of processing, data portability, objection to processing based on legitimate interests, withdrawal of consent at any time, and complaint to a supervisory authority, for example in the country where you live or work (in the UK, the Information Commissioner’s Office).
• United States (California CCPA as amended by the CPRA, and the comprehensive privacy laws of other states such as Virginia, Colorado, Connecticut, Texas and Oregon): to know and access, delete, correct and port personal information; to opt out of its sale or sharing, of targeted advertising and of profiling; to limit the use of sensitive personal information; to appeal a refusal; to use an authorised agent; and not to be discriminated against for using these rights. Notice for California residents: in the last 12 months the developer has not collected personal information through the app, other than e-mails you chose to send us. We have not sold or shared personal information, and we do not use sensitive personal information. Global Privacy Control signals are honoured where the law requires; today there is nothing to opt out of.
• Canada (PIPEDA and provincial laws, including Québec’s Law 25): access, correction and withdrawal of consent; complaints to the Office of the Privacy Commissioner of Canada or, in Québec, the Commission d’accès à l’information.
• Brazil (LGPD): confirmation of processing, access, correction, anonymisation, blocking or deletion, portability, information about sharing and revocation of consent; complaints to the ANPD.
• Japan (APPI): disclosure, correction, suspension of use or deletion; complaints to the Personal Information Protection Commission.
• South Korea (PIPA): access, correction, deletion, suspension of processing and withdrawal of consent; complaints to the Personal Information Protection Commission or the KISA privacy centre. The person responsible for personal information is the developer, reachable at [email protected].
• Australia and New Zealand (Privacy Act 1988, Privacy Act 2020): access and correction; complaints to the OAIC or the New Zealand Privacy Commissioner.
• Other countries (for example India’s DPDP Act, Singapore’s PDPA, South Africa’s POPIA or Türkiye’s KVKK): the rights your local law gives you. Write to us and we will respond in line with it.

How we respond. We answer within one month, or sooner or later where your local law sets another period (for example 45 days under the CCPA), and we may extend it where the law allows. We may ask for information to confirm that a request comes from you. Requests are free unless they are manifestly unfounded or excessive. If we cannot do what you ask, we explain why and how you can appeal or complain.

15International users

Pagrith is available in many countries. The developer does not receive the data you keep in the app, so we do not transfer it anywhere.

If you e-mail us, your message is processed by our e-mail provider and may be stored on servers outside your country. Where the GDPR or UK GDPR applies to such a transfer, it relies on an adequacy decision, on standard contractual clauses offered by the provider, or on the transfer being necessary to answer your request.

This policy is written in English. If a translation is offered, the English version prevails unless your local law requires otherwise.

16Security

Pagrith uses Android’s application sandbox for its private data and reads book files with read-only access. Books are opened in a restricted local viewer: book scripts are not run, external resources are not loaded, and malformed or oversized archives are rejected. The app does not add a password-protected vault or promise encryption beyond what your device provides. Backups and exports are ordinary files. Use a device screen lock, keep your device updated and choose trusted storage destinations.

No device or storage system is perfectly secure. Someone with access to an unlocked, compromised or rooted device, to a backup or to an exported file may read it. Do not send private files to support unless they are needed for your request.

17Ads, purchases and future versions

Today. The current version of Pagrith is free of charge, shows no ads, has no in-app purchases or subscriptions, and contains no advertising, analytics or payment SDKs. This describes the app as it is now, not a promise about future versions. Future versions may introduce advertising, paid features, in-app purchases or subscriptions, or other optional services.

If ads are introduced. Ads would be supplied by a third-party ad network, for example Google AdMob. Ad networks typically process your device’s advertising ID, IP address, approximate location derived from the IP address, device and app information and your interactions with ads, in order to show ads, limit repetition, measure performance and prevent fraud, and, only where you allow it, to personalise ads. Ads would also require the app to connect to the internet, which the current version cannot do.

If purchases or subscriptions are introduced. They would be processed by Google Play’s billing system. Google handles your payment details under the Google Privacy Policy. We would receive only what is needed to deliver and verify a purchase, such as a purchase token, the product, its status, the country and the currency, never your full card or bank details.

Before any such change we will update this policy with a new effective date and version, describing what data is processed, by whom, why and how you can control it; update the Google Play Data safety section; mention the change in the release notes; ask for your consent where the law requires it (for example for personalised ads and non-essential access to your device in the EEA, the UK and Switzerland, through a consent tool that meets Google’s requirements); and offer the opt-outs the law requires (for example under US state privacy laws). The change applies only from the app version that introduces it. Data already stored in the app will not be used for advertising without telling you first and, where required, getting your consent. We will not knowingly show personalised ads to children (§18).

18Age limits

Pagrith is a general reading tool for adults and is not directed to children under 13. A parent or guardian who believes a child has sent us personal information can contact support to request its deletion. We cannot inspect or remotely delete data that exists only on a device.

19Changes to this policy

We may update this policy when we change the app (including any change described in §17), when the services the app uses change, or when the law changes. The effective date and version at the top of this page show which version applies, and the version history (§20) summarises every change.

For a material change, for example new data leaving your device, ads or purchases, we update this page and the Google Play Data safety section before the app version with that change is published, describe it in the release notes, and ask for your consent in the app where the law requires it. Changes do not apply retroactively to data processed before them. Earlier versions are available on request from [email protected].

20Version history

21Contact

• Developer (controller): Zydeno, the developer of Pagrith on Google Play
• E-mail for privacy questions and requests: [email protected]
• Website: zydeno.com

We aim to answer within 30 days. If you are not satisfied with our answer, you can contact your local data-protection authority.

See also the Terms of Use.