Cello Tuner - Simple Tuner
Jonathan de Gaston Music iPhoneiPadiPod touch
Cello Tuner - Simple Tuner is a free Music app for iPhone and iPad by Jonathan de Gaston. Rated 4.2/5 from 454 ratings. Requires iOS 15.0.
- Rating
- 4.2
- 454 ratings
- Price
- Free
- on the App Store
- Size
- 26 MB
- Age 4+
- Updated
- Oct 4
- 2026 · v4.7.2
Screenshots
About Cello Tuner - Simple Tuner
Ready for rehearsal? Cello Tuner brings every C G D A string into focus with a clear pitch needle, note name and frequency reading. Its pitch tracker follows a sustained bowed or plucked note through some background noise, helping you tune with confidence when the room is not perfectly quiet. Standard C G D A tuning Use Cello Tuner for the standard C, G, D and A strings, from the low C to the upper A. Keep the instrument layout in view while you work through each string before a lesson, home practice, or ensemble rehearsal. - See the detected note, octave and frequency. - Follow the needle to check sharp or flat pitch. - Tap a string button to hear a recorded reference sound. - Compare your string by ear, then confirm it on the display. Precision you can see Cello Tuner shows the note, octave and frequency in hertz. Its cent-based needle helps you move from “almost there” to in tune with small, accurate adjustments. When the sound is too uncertain, the detector waits for a clearer note instead of guessing. Get the best of both approaches: follow the needle or tap a recorded reference and tune by ear. A reference for your rehearsal Set A4 between 430 and 450 Hz to match the reference used for your pitch-detection checks. Options include 432, 440 and 442 Hz. Cello Tuner saves your choice for later sessions. Its recorded string sounds stay at their original pitch and do not transpose when you change A4. Follow notes in chromatic mode Switch to chromatic mode to display notes beyond the standard open strings. Use a sustained tone and watch the note name and needle as you check the pitch you are playing. A straightforward start to practice Allow microphone access, then bow or pluck one string at a time, especially on the lower strings. For your most accurate reading, let one string ring clearly near the microphone. If surrounding noise drowns out your cello, move closer to the microphone or find a quieter spot. Cello Tuner gives students, returning players and violoncello musicians visual feedback and sounds to compare. Built on tuner experience Our tuner apps have helped millions of users. Cello Tuner brings that experience to a focused cello tuning check.
Ratings & reviews
4.2
454 ratings
What’s new
Version 4.7.2 · Updated October 4, 2026
Bring every string into focus. This update gives your cello tuning a steadier needle, refreshed reference sounds and a smoother start to rehearsal. - Improved pitch tracking: the updated tuning engine follows more sustained notes through some background noise and waits for a clearer note when the sound is uncertain. - Steadier tuning guidance: smoother sharp and flat feedback reduces distracting needle jumps, helping you make small, precise adjustments. - Refreshed cello reference tones: tap the C, G, D and A string buttons to hear the updated sounds for standard CGDA tuning and compare your open strings by ear. - Better reference playback on iPhone and iPad: fixed an issue that made string sounds play too quietly. - More reliable audio when switching apps: microphone tuning pauses when you leave and resumes when you return with microphone permission. Reference tones now stop when the app leaves the foreground. - A focused first launch: new installations open in cello mode. Chromatic mode is still available, and your saved mode is remembered. Get the best of both approaches: tune by ear, then check the needle. Bow or pluck one string at a time and get back to making music.
App privacy
The developer, Jonathan de Gaston, reported these privacy practices to Apple.
Data Not Collected
The developer does not collect any data from this app.
Alternatives to Cello Tuner - Simple Tuner
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| Cello Tuner - Simple Tuner | 4.2 / 5 (454 ratings) | Free | October 4, 2026 | |
| Cello Tuner Basic | 4.3 / 5 (215) | Free | Apr 29, 2026 | Compare |
| Simply Tuner - Violin, Cello | 4.2 / 5 (2,558) | Free | Feb 23, 2024 | Compare |
| Learn & Play Cello - tonestro | 4.3 / 5 (79) | Free | Oct 7, 2026 | Compare |
| Tuner Lite by Piascore | 4.5 / 5 (9,997) | Free | Apr 24, 2025 | Compare |
| Cello Tuner – XTuner PRO | 4.0 / 5 (1) | Free | Aug 26, 2025 | Compare |
| Metronaut Sheet Music | 4.4 / 5 (1,156) | Free | Oct 3, 2026 | Compare |