# ToneLens — Guitar Chords in Real Time

> Guitar Chords in Real Time (iPhone/iPad app by Visto Engineering Sa.)

- Source: https://appshunter.io/ios/app/tonelens/id6761526850 (this page in markdown: same URL + `.md`)
- Developer: [Visto Engineering Sa](https://appshunter.io/developer/1137887413)
- Category: Entertainment, Music
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 10 MB
- Languages: Arabic, Catalan, Croatian, Czech, Danish, Dutch, English, Finnish, French, German and 23 more
- Released: 2026-04-17
- Data updated: 2026-06-25
- User reviews in markdown: https://appshunter.io/ios/app/tonelens/id6761526850/reviews.md

## What is ToneLens?

ToneLens listens to music playing around you and instantly detects chords, key, and scale, displaying everything in real time on an interactive guitar fretboard.

Whether you're jamming along to your favorite songs, learning new progressions, or improvising solos, ToneLens is your real-time companion.

REAL-TIME CHORD DETECTION
Play any music nearby, a speaker, a friend's guitar, a song on your phone. ToneLens uses your microphone to analyze the audio as it plays. No internet needed. Everything happens on your device, instantly.

KNOW WHERE TO PLAY
Notes light up on the fretboard exactly where your fingers should go. Five display modes adapt to your level:
- Chord: The shape under your fingers, on the fretboard
- Pentatonic: The 5 notes that always work
- Triad: The three notes of the chord
- CAGED: Box positions with ghost strings
- Scale: Full scale with chord tones emphasized

PREDICT THE NEXT CHORD
See what's coming before it happens. ToneLens analyzes the progression and shows the predicted next chord so you're never late.

FREQUENCY FILTERS
Playing along to a full band? Filter what you hear:
- Bass strings (5-6): Follow the rhythm
- Mid strings (3-4): Follow the chords
- Treble strings (1-2): Follow the melody

NO SUBSCRIPTION
Try every feature free for 7 days. Then one single purchase unlocks everything forever. No monthly fee. No yearly renewal.

PRIVACY
Your music stays yours. 100% on-device processing. No audio is ever recorded or sent anywhere. No account needed. No tracking, no ads.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| ToneLens Unlocked | $8.99 | one-time |



## Version history (last 5 releases)

### 1.1.0 — 2026-05-29

Sharper chord detection, significantly fewer misreads on busy songs. New Chord mode shows the shape under your fingers right on the fretboard. Cleaner layout with quicker access to modes and positions. Smaller iPhone screens get extra breathing room.

### 1.0.5 — 2026-04-29

Tell us how it's going — share your experience right from Settings or after a session. Plus we now politely notify you when a new version is available, and other background improvements.

### 1.0.4 — 2026-04-25

Stability improvements and new diagnostic tools to help us provide better support.

### 1.0.3 — 2026-04-17

Capo now works correctly with all fretboard modes. Bug fixes and stability improvements.

### 1.0.2 — 2026-04-17

Capo now works correctly with all fretboard modes. Bug fixes and stability improvements.

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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 2026-06-25.*