Enhance your music learning with a tool that allows you to slow down, loop, and repeat sections of online video tutorials. It also offers AI-powered audio analysis to split songs into stems, detect chords and BPM, and generate transcriptions.





8+ iOS apps curated and reviewed
Finding the right stephan duechtel apps can be overwhelming with so many options. We've analyzed 8+ apps to bring you the best choices for 2026, from free options to premium solutions with advanced features.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 | Free | 4.4★ (19) | No | Yes | Jul 2026 | |
| 2 | Free | 4.6★ (65) | Yes | Yes | Jul 2026 | |
| 3 | Free | 5.0★ (5) | Yes | Yes | Jul 2026 | |
| 4 | Free | 5.0★ (2) | Yes | Yes | Jul 2026 | |
| 5 | Free | 4.3★ (7) | Yes | Yes | Jul 2026 | |
| 6 | Free | 3.0★ (3) | No | Yes | May 2026 | |
| 7 | Free | 4.0★ (1) | Yes | Yes | Jul 2026 |





Enhance your music learning with a tool that allows you to slow down, loop, and repeat sections of online video tutorials. It also offers AI-powered audio analysis to split songs into stems, detect chords and BPM, and generate transcriptions.






This AI-powered app accurately counts your push-ups in real-time using pose estimation technology. It offers personalized workout plans, form feedback, and motivational features like leaderboards and group challenges to help you improve strength and heart health.






This AI-powered app uses pose estimation to accurately count your sit-ups in real-time. It offers personalized workout plans, progress tracking, and community features to keep you motivated. Try it for free before committing to a purchase.


This AI-powered fitness app accurately counts your burpees in real-time using pose estimation. It offers personalized workout plans, progress tracking, and community features to keep you motivated. Try it risk-free before purchasing.


This AI-powered fitness app accurately counts your pull-ups and dips using pose estimation technology. It offers personalized workout plans, progress tracking, and community features to keep you motivated. Try it hands-free before you buy.


Learn guitar fretboard notes using your real instrument and phone microphone. Practice open strings, specific frets, and octave shapes with timed sessions. Improve note memorization through interactive feedback.


This app uses AI pose estimation to accurately count your squats and Bulgarian split squats in real-time. It offers personalized workout plans, progress tracking, and community features to keep you motivated.