Mobile app · Office & notes

Palimpsest

Encrypted notes, diary and to-dos with hidden vaults behind one password.

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: GPL-3.0 — Open source (copyleft)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: tetraga
Latest version: 0.3.0 (29 October 2026)
Latest activity: 29 October 2026
Source code: github.com/tetogon/Palimpsest

Overview

Palimpsest is a note-taking mobile app, available on Android. Other documented uses: journaling.

Features described in its F-Droid listing and in its GitHub repository: data encryption, Markdown support and autofill.

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

“Encrypted notes, diary and to-dos with hidden vaults behind one password” — F-Droid, 10 November 2026
“Encrypted notes, diary and to-dos with hidden vaults behind one password” — F-Droid, 10 November 2026
“An encrypted diary and notes app for Android with deniable vaults: one password field, any number of vaults, and no way to tell from the file how many there are.” — GitHub, 10 November 2026
“Markdown editor that hides the markers away from the line you edit” — F-Droid, 10 November 2026
“Incognito keyboard, no autofill, copied text cleared after 60 seconds” — F-Droid, 10 November 2026

At a glance

All of Palimpsest is free: no feature is locked behind a paid plan, and its code is open.

Its licence (GPL-3.0) is a copyleft open source licence: you may use, study, modify and redistribute it, including commercially; modified versions must keep the same licence.

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: 5 November 2026
Description from F-Droid — F-Droid (citation courte)

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