# OneTune: Instrument Tuner — Tuner, Metronome & Chords

> Tuner, Metronome & Chords (iPhone/iPad app by Freedom Dimension (shenzhen) Technology Co., Ltd.)

- Source: https://appshunter.io/ios/app/onetune-instrument-tuner/id6789659103 (this page in markdown: same URL + `.md`)
- Developer: [Freedom Dimension (shenzhen) Technology Co., Ltd](https://appshunter.io/developer/6776064465)
- Category: Music, Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 16.0 · 81 MB
- Languages: Chinese (Simplified, China), Ukrainian, Urdu, Russian, Hindi, Indonesian, Turkish, Bangla, Hebrew, Greek and 18 more
- Released: 2026-07-20
- Data updated: 2026-10-13

## What is OneTune?

Tune, keep time, and practice from your own scores. OneTune brings an offline instrument tuner, metronome, score library, and beginner knowledge references together on iPhone and iPad.

Choose from 45 instrument and tuning presets plus Universal Tuning (chromatic mode), covering guitar, ukulele, bass, bowed strings, mandolin, banjo, Chinese strings, and transposing wind instruments. Read pitch, frequency, and cents on a clear visual gauge. Select a target string to begin listening immediately; reference tones play only when you request them.

Practice with a 30–240 BPM metronome, tap tempo, four time signatures, quarter-note, eighth-note, triplet, and sixteenth-note subdivisions, and an optional first-beat accent.

Open the Knowledge tab for 24 guitar and ukulele chord diagrams, 120 scale combinations across 12 roots and five scale families, and 12 illustrated beginner lessons. Explore strings and finger placement, tuning, notes and cents, time signatures, rhythm, tablature, and concert versus written pitch. Chord and scale diagrams support right-handed and left-handed views, with offline audio previews.

Import PDF scores or score photos into your local library. Organize and favorite scores, read pages, add pen or highlighter marks, and erase unwanted annotation strokes with undo and redo. Share the original or an annotated PDF. Back up your library and restore it locally.

Universal Tuning, standard guitar, standard ukulele, and concert-pitch wind tuning are free. A yearly Pro subscription or one-time lifetime purchase unlocks the full preset library, adjustable A4 reference pitch, and precision confidence controls.

Add Home Screen widgets to check saved tuning notes, A4 reference pitch, tempo, and beat count, then open the tuner or metronome with a tap. Widgets show saved settings; they do not measure live sound or play a beat in the background.

Supports iOS 16 and later, with compact controls and layouts for iPhone and iPad. Tuning, rhythm practice, score reading, and knowledge references work offline. Microphone audio is analyzed in memory on your device, never recorded or uploaded. No account, in-app ads, or third-party tracking.

Terms of Use: https://oneapps.studio/terms

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| OneTune Pro Lifetime | $1.99 | one-time |


## Is OneTune safe?

Not enough ratings yet to assess OneTune.

## Is OneTune legit?

OneTune: Instrument Tuner appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for OneTune is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 5 releases)

### 1.5.2 — 2026-10-12

A clearer start, better music references, and simpler Pro access.

• Start with onboarding that covers string and wind instruments.
• Open chords, scales, and fingering from three compact Knowledge shortcuts. Browse verified diagrams and beginner lessons.
• Erase handwritten score annotations, undo or redo changes, and keep edits saved locally.
• Purchased Pro access refreshes more reliably. Active members see a confirmation page instead of purchase options.
• Refined spacing and layouts for iPhone and iPad.

### 1.5.0 — 2026-10-11

Find beginner-friendly music references in the new Knowledge tab, alongside the tuner, metronome, and your scores.

• Explore 12 illustrated lessons on tuning, strings and fingers, rhythm, tablature, scales, and chords. Review 24 chord diagrams and 120 scale combinations with clear note and fret positions.
• Keep PDF scores and score photos in a local library, mark difficult passages, and share annotated PDFs.
• Enjoy more compact score lists, consistent type and spacing, and layouts adapted for iPad.
• Select a tuning string to start listening immediately. Reference tones now play only when you explicitly request them.
• Add tuning reference and practice tempo widgets to your Home Screen. Check saved settings and tap to open the corresponding tool.
• Choose instruments from a compact native menu. All five iPad tabs remain visible when switching languages.
• Use OneTune on iOS 16 and later.

### 1.4.1 — 2026-10-05

OneTune now uses the Chinese name “知音”. Tuning, metronome, chords, and scales work as before.

### 1.4 — 2026-09-25

Choose yearly or lifetime Pro access. Existing lifetime purchases remain active, and eligible subscription offer codes can be redeemed in the app. The App Store page also adds Traditional Chinese text and screenshots.

### 1.3 — 2026-09-14

Pitch tracking now stays steadier while plucked notes decay and rejects common octave-harmonic jumps more reliably.

The Chords tab is now a Music Library with 120 common guitar and ukulele scales across 12 roots and five scale families. Each scale includes its note sequence and a 12-fret map.

Complete chord and scale audio previews now work offline, and all chord diagrams and scale fretboards can switch between right-handed and left-handed display.

## Apps similar to OneTune

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [StringForge: Guitar Tuner](https://appshunter.io/ios/app/stringforge-guitar-tuner/id6797077731) | — | Free | Music |
| [FretBuilder](https://appshunter.io/ios/app/fretbuilder/id6505123345) | — | Free | Music |
| [Fretwork: Chords and Scales](https://appshunter.io/ios/app/fretwork-chords-and-scales/id6796527006) | 5.0 (2) | Free | Music |
| [Tun3r: Instrument Tuner](https://appshunter.io/ios/app/tun3r-instrument-tuner/id6779280169) | — | Free | Music |
| [RightTune Easy Guitar Tuner](https://appshunter.io/ios/app/righttune-easy-guitar-tuner/id6786328622) | — | Free | Music |
| [Infinity Music – Tuner &Rhythm](https://appshunter.io/ios/app/infinity-music-tuner-and-rhythm/id6755588800) | — | Free | Music |

## More apps by Freedom Dimension (shenzhen) Technology Co., Ltd

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- [返航](https://appshunter.io/ios/app/id6787702158)
- [OneStarter](https://appshunter.io/ios/app/onestarter/id6787966863)
- [OneHabit: Habit Tracker](https://appshunter.io/ios/app/onehabit-habit-tracker/id6788409678)

All apps by Freedom Dimension (shenzhen) Technology Co., Ltd: https://appshunter.io/developer/6776064465

## Related topics

[free tuning app instrument](https://appshunter.io/ios/topics/free-tuning-app-instrument) · [hp tuners tdn](https://appshunter.io/ios/topics/hp-tuners-tdn) · [tunein](https://appshunter.io/ios/topics/tunein)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-13.*