iontuner is made and published by Seth Adam Mundall. AppBrain is an independent app data site and isn't affiliated with Seth Adam Mundall. The app name, icon, screenshots and description belong to Seth Adam Mundall and are shown as published on the App Store.
AppBrain's verdict
- Last updated
- June 17, 2026
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Releases
Updates seen on the App Store- Version
- 2.5.0
- Launched
- May 2026
No changelog data
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Technology
Found in the app by AppBrain- Price
- Free
- App size
- 1.70 MB
- Content rating
- Everyone
Technologies used by iontuner
About the app and developer
About iontuner
iontuner is a music app developed by Seth Adam Mundall.
What is the rating of iontuner?
iontuner has no ratings yet.
Is iontuner free?
iontuner is free. The app size is 1.70 MB. The latest version available is 2.5.0. The last update was on June 17, 2026.
What are the requirements for iontuner?
The app has a content rating of Everyone. The app has been available on the App Store since May 2026.
Developer information for Seth Adam Mundall
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Frequently asked questions about iontuner
Is iontuner free?
Yes. iontuner is free on the App Store.
Is iontuner still available?
Yes. iontuner is on the App Store, and the last update we saw was on June 17, 2026.
How large is iontuner?
iontuner is 1.70 MB.
Is iontuner suitable for children?
App Store rates the content of iontuner as suitable for everyone.
Who made iontuner?
iontuner was developed by Seth Adam Mundall. It is listed in the music category on the App Store.
What are the best alternatives to iontuner?
People looking at iontuner also look at these music apps: OpenTuner: Guitar & More, AllGoRhythmics, OpenFret Guitar Tuner, GCRadio, Beet - metronome reimagined.
Store listing
By Seth Adam Mundall, from the App Store
Description by Seth Adam Mundall Written by the developer, not by AppBrain. Click to read.
iontuner does one thing well: it helps you tune your instrument quickly and accurately. Open the app, pick your instrument, play a string, watch the needle. That's it.
INSTRUMENTS
Built for guitar, 12-string guitar, bass, double bass, ukulele, violin, viola, cello, mandolin, banjo, piano, and chromatic mode. Tap "Show world instruments" to access oud, saz, charango, cuatro (Venezuelan and Puerto Rican), tres cubano, bouzouki (Greek and Irish), balalaika, erhu, and pipa — with proper regional tuning traditions for each.
40+ TUNINGS
Standard, Drop D, DADGAD, Open G, Half Step Down, and dozens more. Five double bass tunings including the historical Viennese tuning. Multiple regional traditions for oud (Arabic, Iraqi, Turkish, Egyptian) and bouzouki (tetrachordo, trichordo, Irish). Star your favorites for quick access.
FIVE CONCERT A PITCHES
440 Hz (Standard), 442 Hz (Orchestral), 432 Hz (Alternative), 430 Hz (Classical), and 415 Hz (Baroque). For period instrument musicians, modern orchestras, and everyone in between.
SUB-CENT PRECISION
Standard mode hits ±1 cent accuracy for everyday tuning. Pro mode goes sub-cent for piano tuning, double bass low octave, and reference work.
CUSTOM TUNINGS
Build your own tunings string by string. Save unlimited custom presets. Frequencies update automatically when you change Concert A.
REFERENCE TONES
Play a clean reference pitch for each string. Tap, tune by ear, tap to stop.
DESIGNED FOR YOUR INSTRUMENT
Each instrument has its own detection profile — buffer sizes, filter cutoffs, and harmonic correction tuned for what you're actually playing. Bowed strings get extra smoothing. Bass instruments get expanded low-frequency analysis. Double bass detection reaches down to B0 (30.9 Hz).
WHAT YOU WON'T FIND
No ads. No subscriptions. No in-app purchases. No "premium tier." No data collection. No analytics. No account creation. No paywall after seven free uses. No "unlock with rating." Nothing tracking you, ever.
10 LANGUAGES
English, Spanish, Portuguese, French, German, Italian, Russian, Arabic, Chinese (Simplified), Japanese, and Korean.
iPad AND iPHONE
Designed for both. iPad gets a sidebar layout that keeps everything visible.
PRIVACY
Audio is analyzed entirely on your device. Nothing leaves your phone. Ever.
Built by a solo developer who got tired of tuner apps full of ads and paywalls. iontuner is what a tuner app should be.
Open the app. Tune your instrument. Close the app. Make music.