# SUS4 Ear Pro — The full ear-training course.

> The full ear-training course. (iPhone/iPad app by ThePaulSmith.)

- Source: https://appshunter.io/ios/app/sus4-ear-pro/id6777229711 (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 · 19 MB
- Languages: American English
- Released: 2026-06-16
- Data updated: 2026-08-27
- User reviews in markdown: https://appshunter.io/ios/app/sus4-ear-pro/id6777229711/reviews.md

## What is SUS4 Ear Pro?

Ear training done properly.

SUS4 Ear Pro is the full ear-training course — 172 structured lessons across 20 chapters that take you from identifying simple intervals to recognising complex chord colours and working with frequencies by ear. Musician mode and Sound-Engineer mode are distinct tracks: musicians work through relative pitch, chord quality, and melodic dictation; sound engineers work through Hz identification and frequency matching.

The spaced-repetition tutor tracks what you have learned and schedules review at the right time — so the things you are shaky on come back more often, and the things you have nailed do not waste your time. Genuine progress over weeks and months, measurable and persistent.

• 172-lesson, 20-chapter structured ear-training course
• Musician mode: intervals, chord quality, scales, melodic dictation
• Sound-Engineer mode: Hz identification, frequency matching, spectral ear training
• Spaced-repetition tutor — reviews what you need when you need it
• Progress tracking across every lesson and category
• Subscribe monthly, or unlock the full SUS4 suite with one lifetime purchase: the complete 172-lesson, 20-chapter course, both modes, spaced-repetition tutor

All audio analysis runs on your device, and the AI tutor uses on-device models where supported. Nothing is sent to a server.

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| SUS4 Ear Pro Monthly | $0.99 | per month |
| SUS4 All-Access | $4.99 | per month |



## Version history (last 4 releases)

### 1.1.1 — 2026-08-27

Lifetime purchase option and reliability improvements.

### 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 — 2026-06-22

Reliability and performance improvements throughout the app.

### 1.0 — 2026-06-16

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)
- [SUS4 Chord ID](https://appshunter.io/ios/app/sus4-chord-id/id6777229621)

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 2026-08-27.*