Mobile app · Office & notes

Relatrix

An active knowledge-management and multi-modal note-taking platform.

Completely free
Android
Open source

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Geographic availability: No geographic restriction found in our sources; availability is not checked country by country.

Technical details

Pricing: Completely freeconfirmed by F-Droid
License: Apache-2.0 — Open source (permissive)confirmed by F-Droid
Open source: Yes
Commercial use: Yesconfirmed by F-Droid
Account required: not documented
Credit card required: Noconfirmed by F-Droid
Watermark: Not applicable
Ads: No
Platforms: AndroidEstablished by Android: F-Droid
Distribution: Available on F-Droid
Publisher: Saad Ibra
Latest version: 2.0.5 (22 September 2026)
Latest activity: 22 September 2026
Source code: github.com/saad-ibra/gray-matter

Overview

Relatrix is a note-taking mobile app, available on Android.

Features described in its F-Droid listing and in its GitHub repository: annotation and highlighting, Markdown support.

Overview written by LicitPro from the documentation published by the authors and the cited sources; we have not tried the resource ourselves.

Excerpts that establish this information

“An active knowledge-management and multi-modal note-taking platform.” — F-Droid, 10 November 2026
“You gather articles, highlight text, save links, and then forget everything.” — GitHub, 10 November 2026
“You can add web links, PDFs, markdown notes, and absolutely any kind of file as a resource.” — F-Droid, 10 November 2026

At a glance

Relatrix is completely free: it is open source software, and every feature is available without paying or subscribing.

Its licence (Apache-2.0) is a permissive open source licence: use, modification and redistribution are allowed, including in commercial projects.

Strengths

Open source code
No advertising
Commercial use allowed

Sources and checks

Facts collected from F-Droid (credit card, source code, publisher, licence, free status, platforms, ads, commercial use, version) — 6 November 2026
Last technical check: 6 November 2026
Description from F-Droid — F-Droid (citation courte)

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