Ex Libris
Privacy Policy
Last updated: 3 July 2026
This Privacy Policy explains how the Ex Libris mobile application ("Ex Libris", "the App", "we", "us", or "our") handles information. Ex Libris is a personal catalogue for the physical books you own — shelves, compartments, quotes, reading logs, and collectibles.
By installing or using Ex Libris, you agree to the practices described in this policy.
1. The short version
- Ex Libris is a local-first app. Everything you add — your books, shelves, quotes, reading history, notes, photos, and file references — is stored only on your device.
- We do not have accounts, servers, or a cloud database. We never receive, see, or store your library.
- We do not collect, sell, share, or monetise personal data.
- No analytics, no advertising, no third-party trackers are built into the App.
- The only time the App contacts the internet is when you ask it to look up a book by ISBN or title. That request goes to the public Open Library service (see Section 4).
2. Information stored on your device
All of the following is created by you and kept locally on your device (in the App's private on-device database and file storage). It is never transmitted to us:
- Book catalogue data — titles, authors, descriptions, publication years, ISBNs, cover images, condition, and the physical shelf/row/compartment address of each book.
- Reading activity — reading sessions, times read, progress, dates, and any notes you record.
- Quotes you save.
- Collectibles — photos and details of bookmarks, receipts, signatures, and other items you attach to a book.
- Photos you take or import for book covers and collectibles.
- File references — if you catalogue an ebook/PDF as a reference, the App stores a pointer to that file so it can be opened in your own reader. Ex Libris is not an ebook reader.
Because this data lives only on your device, deleting the App (or clearing its data) permanently removes it. We cannot recover it for you, as we never held a copy.
3. Device permissions we request
The App asks for the following permissions only to enable features you actively use. Data accessed through them stays on your device.
| Permission | Why it is used |
|---|---|
| Camera | To photograph book covers and collectibles, when you choose to. |
| Photo library / storage | To import existing images as covers or collectible photos, when you choose to. |
| Files / document access | To let you pick a PDF or ebook file to reference, when you choose to. |
We do not access these unless you initiate the action. Images and files are stored locally and are not uploaded to us or any third party.
4. Internet access and the Open Library lookup
The only network feature in Ex Libris is optional book lookup. When you choose to auto-fill a book by ISBN or title, the App sends only your search term (the ISBN or title you entered) to the public Open Library service:
https://openlibrary.org— book metadata (title, author, description, year, cover identifiers)https://covers.openlibrary.org— cover images
This is used solely to fetch book details and cover art so you don't have to type them in. We do not attach your identity, device identifiers, or any personal information to these requests.
Open Library is operated by the Internet Archive, an independent third party with its own privacy practices. Their handling of requests is governed by their policy: https://archive.org/about/terms.php
If you never use the lookup feature, the App does not contact the internet at all.
5. Information we do NOT collect
Ex Libris does not:
- Require an account, email, phone number, or login.
- Contain analytics, crash-reporting, advertising, or tracking SDKs.
- Collect location data, contacts, or device identifiers.
- Record audio or use the microphone.
- Sell or share any data with advertisers, data brokers, or other third parties.
6. Data security
Your data is protected by your device's own security model — the operating system keeps each app's private storage isolated. We recommend using a device lock (PIN, passcode, or biometric) and keeping your device software up to date. Because we never receive your data, there is no server-side store that could be breached.
7. Children's privacy
Ex Libris does not collect personal information from anyone, including children. The App is a general-audience cataloguing tool and is not directed at children under the age of 13 (or the equivalent minimum age in your jurisdiction).
8. Your rights and control
You are always in full control of your data:
- Access / export: All your data is on your device.
- Delete: Remove individual entries within the App, or clear the App's data / uninstall it to erase everything.
Because we do not hold your data, there is nothing for you to request from us regarding access, correction, or deletion of a stored copy — you already have the only copy.
9. Changes to this policy
We may update this Privacy Policy from time to time — for example, if the App gains new features. Changes will be posted at this URL with an updated "Last updated" date. Continued use of the App after changes take effect constitutes acceptance of the revised policy.
10. Contact
If you have questions about this Privacy Policy or the App, contact:
- Developer: Light Year Tech
- Email: imran.cse.ku@gmail.com