# SUS4 Chord ID — Name the chord you're hearing.

> Name the chord you're hearing. (iPhone/iPad app by ThePaulSmith.)

- Source: https://appshunter.io/ios/app/sus4-chord-id/id6777229621 (this page in markdown: same URL + `.md`)
- Developer: [ThePaulSmith](https://appshunter.io/developer/319584506)
- Category: Music, Education
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 16.0 · 20 MB
- Languages: American English
- Released: 2026-06-13
- Data updated: 2026-07-06
- User reviews in markdown: https://appshunter.io/ios/app/sus4-chord-id/id6777229621/reviews.md

## What is SUS4 Chord ID?

What chord is that? Now you know.

Play a chord, and SUS4 Chord ID names it. Hold a guitar chord up to the mic, play a few notes into the app's built-in keyboard, and the app returns the chord name and a set of common voicings on guitar and piano. It handles basic major and minor triads just as cleanly as it handles extended jazz chords and ambiguous slash chords.

The history tab keeps a log of every chord you have identified, with optional notes so you can annotate as you go. Useful for writing sessions where you are building a progression and want a record of what you played, and useful for theory study when you want to understand what you are hearing.

• Mic-based chord detection — play it in; the app names it
• Built-in keyboard for manual input
• Chord name display with common voicing diagrams
• Supports simple triads through extended and altered jazz chords
• Identification history with optional notes per entry
• Subscribe monthly, or unlock the full SUS4 suite forever: unlimited identifications, voicing diagrams for common chords, and annotated history

All audio analysis runs on your device. Your music stays private.

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| SUS4 Chord ID Pro Monthly | $2.99 | per month |



## Version history (last 4 releases)

### 1.1.0 — 2026-07-02

Every advertised feature is now fully functional, Pro genuinely unlocks real features, and the new SUS4 All-Access pass unlocks all 24 SUS4 apps with a 7-day free trial. Faster and clearer throughout.

### 1.0.2 — 2026-06-18

Reliability and performance improvements throughout the app.

### 1.0.1 — 2026-06-13

You can now redeem a 4chordsStudios access code to unlock the full app — open the unlock screen and tap “Have a code? Redeem it”. Plus stability and performance improvements.

### 1.0 — 2026-06-13

No release notes.

## More apps by ThePaulSmith

- [iScrobble Pick And Mix](https://appshunter.io/ios/app/iscrobble-pick-and-mix/id319584503)
- [iSwipeMusic](https://appshunter.io/ios/app/iswipemusic/id334689181)
- [iShuffleAlbums](https://appshunter.io/ios/app/ishufflealbums/id335009718)
- [iBreathalyzer](https://appshunter.io/ios/app/ibreathalyzer/id369686249)
- [SUS4 Pitch Pipe](https://appshunter.io/ios/app/sus4-pitch-pipe/id6777229584)

All apps by ThePaulSmith: https://appshunter.io/developer/319584506

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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 2026-07-06.*