Mobile app · Everyday life

Interval Timer (Privacy Friendly)

(SECUSO) Supports circuit training sessions and helps achieve training goals.

Completely free
Android
Open source

Ad-supported exit link (Clictune): an intermediate page may show for a few seconds before the official website. Direct link to the website, no intermediate page

Download from the official source

Link to the official download page, ad-supported (Clictune): an intermediate page may show for a few seconds. Direct link to the download

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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
Publisher: SECUSO - Security Usability Society
Latest version: 1.3.3 (21 July 2025)
Latest activity: 21 July 2025
Source code: github.com/SecUSo/privacy-friendly-interval-timer

Overview

Interval Timer (Privacy Friendly) is a timer and time tracking mobile app, available on Android.

Features described in its F-Droid listing and on its official website: statistics and charts.

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

“To check the user’s goals and to recognize training progress, the app offers the possibility to retrieve statistics about the training times and the calories burned in a daily, weekly or monthly overview.” — F-Droid, 10 November 2026
“KIT - Secuso Research - Results - Privacy Friendly Apps - Interval Timer and Circuit Training” — official website, 10 November 2026

At a glance

All of Interval Timer (Privacy Friendly) 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) — 7 November 2026
Last technical check: 7 November 2026
Description from F-Droid — F-Droid (citation courte)

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