Flex vs Stronk
Comparing two open source alternatives to Hevy and Strong and FitNotes and Fitbod and JEFIT. Use the comparison below to decide which one fits your needs.
Flex
MITOffline-first workout tracker for strength training and cardio with progress graphs, background rest timers and a local database.
Stronk
GPL-2.0Free, open-source weightlifting tracker for logging lifts, sets and reps — a private, installable web app and alternative to Hevy and Strong.
Side-by-side comparison
| Flex | Stronk | |
|---|---|---|
| License | MIT | GPL-2.0 |
| Self-hostable | No | Yes |
| GitHub Stars | 453 | 34 |
| Forks | 50 | 1 |
| Open Issues | 4 | 6 |
| Last Commit | Nov 1, 2026 | May 20, 2026 |
| First Released | Feb 26, 2024 | Nov 16, 2025 |
| Categories | ||
| Tags |
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