FlexTunerPro
SATOSHI NAGASAKA Music iPhoneiPadiPod touch
FlexTunerPro is a free Music app for iPhone and iPad by SATOSHI NAGASAKA. Requires iOS 18.5. Updated January 6, 2026.
- Price
- Free
- on the App Store
- Size
- 3 MB
- Age 4+
- Updated
- Jan 6
- 2026 · v1.1.5
Screenshots
About FlexTunerPro
Key Features ◆ 3 Tuning Modes • Tuner(Auto): Automatically detects and tunes played strings • Tuner(Manual): Select specific strings for precise tuning • Practice: Ear training mode with reference tones ◆ Instrument Profiles • 6-String Guitar (Standard tuning) • 7-String Guitar• 4-String Bass • 5-String Bass • Ukulele (Soprano) • Contrabass and other Strings Instruments • Create custom profiles ◆ Customization • A4 reference pitch adjustment (430-450Hz) • Individual string frequency settings • Supports tuning for situations such as when using a guitar capo through overall pitch adjustment • Profile export/import • Guide tone waveform can be changed from Profile Edit. Available waveforms: Sawtooth, Square, Triangle, and Original (easier to hear in low frequency ranges) ◆ User-Friendly • Large, clear tuning meter • Precise cent display • Auto-lock prevention during tuning • Japanese/English support ※ Important Note Due to the harmonics produced by musical instruments, the octave of the detected pitch may sometimes be incorrectly identified. Please note that there is currently no available method to improve this misdetection issue. 30-Day Free Trial Try all features free for 30 days. Premium Version After the trial period, a one-time purchase is required to continue using the app. Once purchased, enjoy all features forever.
What’s new
Version 1.1.5 · Updated January 6, 2026
Minor corrections to iOS26 support Change the default of the guide sound to the original waveform
App privacy
The developer, SATOSHI NAGASAKA, reported these privacy practices to Apple.
Data Not Collected
The developer does not collect any data from this app.
Alternatives to FlexTunerPro
Looking for apps like FlexTunerPro? Here are 6 similar apps on the App Store. The highest rated is Sisco's Guitar Tuner (5.0/5), and 5 of the 6 are free to download.
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Sisco's Guitar Tuner
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| FlexTunerPro | – | Free | January 6, 2026 | |
| Sisco's Guitar Tuner | 5.0 / 5 (1) | Free | Oct 5, 2026 | Compare |
| Tine: Tuner & Metronome | – | Free | Oct 27, 2026 | Compare |
| MetronomeX | – | 0.49 USD | Feb 10, 2026 | Compare |
| Fretcetera | 4.8 / 5 (11) | Free | Nov 1, 2024 | Compare |
| Chromtuner: Guitar Tuner | 4.0 / 5 (2) | Free | Oct 19, 2026 | Compare |
| Piano Chords: keys + accordion | 5.0 / 5 (2) | Free | Sep 13, 2026 | Compare |
Compare FlexTunerPro with the top alternatives: ratings, updates, ASO score and keyword gaps →