# Understudy vs Workout.cool

> Two self-hosted projects, compared on the numbers selfhost.directory tracks live: score, popularity, release cadence and setup effort.

| | Understudy | Workout.cool |
|---|---|---|
| Score | 48/100 | 66/100 ✓ |
| Rank in category | #110 of 209 in AI Agents | #2 of 11 in Fitness Tracker |
| GitHub stars | 465 | 8 654 ✓ |
| Stars, last 30 days | +0 | +155 ✓ |
| Stable releases, 12 months | 0 | 1 ✓ |
| Latest release | — | v1.3.2 · 7 Dec 2025 |
| Setup | Moderate | Easy ✓ |
| Official Docker image | No | No |
| License | MIT | MIT |
| Main language | Typescript | Typescript |

## Which one should you pick?

Workout.cool scores 66/100 against 48/100 for Understudy, so it is the safer default.

Workout.cool ships more often: 1 stable releases in the past year, against 0 for Understudy.

If you want the quickest setup, Workout.cool is easier to run; Understudy needs more configuration.

Workout.cool is growing faster right now (+155 stars in 30 days).

## Details

- [Understudy](https://selfhost.directory/project/understudy) (markdown: https://selfhost.directory/project/understudy.md)
- [Workout.cool](https://selfhost.directory/project/workout-cool) (markdown: https://selfhost.directory/project/workout-cool.md)

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Source: https://selfhost.directory/compare/understudy-vs-workout-cool