A 30 Day Challenge
William le Bussy Health & Fitness iPhoneiPadiPod touch
A 30 Day Challenge is a free Health & Fitness app for iPhone and iPad by William le Bussy. Requires iOS 15.1. Updated April 17, 2026.
- Price
- Free
- on the App Store
- Size
- 45 MB
- Age 17+
- Updated
- Apr 17
- 2026 · v1.3
Screenshots
About A 30 Day Challenge
Mobility , Strength and Skills Commit to simple 30-day challenges—repeating just one small exercise every day. Easy to start, effortless to maintain, and powerful enough to create real, lasting change. Jump into our designed challenges or create your own custom challenges Our challenges are rooted in ancient movement traditions —drawn from the wisdom of kung fu, tai chi, and yoga —systems refined over centuries and still unmatched today.
What’s new
Version 1.3 · Updated April 17, 2026
Added French language on the App Store page
App privacy
The developer, William le Bussy, reported these privacy practices to Apple.
Data Linked to You
The following data, which may be collected and linked to your identity, may be used for the following purposes:
- Location: Coarse Location
- Identifiers: Device ID
- Usage Data: Product Interaction
Used for: Analytics
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Diagnostics: Other Diagnostic Data
Used for: Analytics
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| A 30 Day Challenge | – | Free | April 17, 2026 | |
| Tai Chi Game | 5.0 / 5 (1) | Free | Apr 10, 2026 | Compare |
| reset: calm in 60 seconds | 5.0 / 5 (1) | Free | May 15, 2026 | Compare |
| Resonance: Breath & Calm | – | Free | Sep 5, 2026 | Compare |
| PulseTrack: Readiness & Sleep | 4.0 / 5 (1) | Free | Aug 29, 2026 | Compare |
| Mood Pulse - Instant Calm | – | Free | Aug 7, 2025 | Compare |
| Tai Chi Buddha | – | Free | May 8, 2026 | Compare |
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