# Interval min vs Know Notes

Interval min and Know Notes both sit at 5.0 stars, but that hides the real split: 96% of Know Notes's written reviews are positive against 50% of Interval min's. Know Notes also leads on ads (none vs shown) and update cadence (fortnightly vs every 7 months). Interval min's advantage is in-app purchases (none vs 6) and device support (3 vs 1). On price and rating there is nothing between them.

Both are free to download. Know Notes sells 6 one-off in-app purchases. Interval min asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Interval min against 4.9 for Know Notes. That said, the two scores are not equally well evidenced: Know Notes has 32 ratings behind it against 6, so its average is the more settled of the two. Written reviews are what separate them: 50% of Interval min's written reviews are positive against 96% of Know Notes's.

Interval min ships an update every 7 months, Know Notes fortnightly. The most recent releases landed on September 30, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Interval min | Know Notes |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (6 ratings)](https://appshunter.io/ios/app/interval-min/id937916331/reviews)** | [4.9 (32 ratings)](https://appshunter.io/ios/app/know-notes-learn-music/id1536356966/reviews) |
| Number of ratings | 6 | **32** |
| Positive reviews | 50.0% of reviews | **95.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 7 months | **Fortnightly** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 21 MB | 107 MB |
| Requires iOS | **14.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Kelly Technology Inc.](https://appshunter.io/developer/393931941) | [wylan neely](https://appshunter.io/developer/1261508202) |

## What reviewers say

### Interval min

[App page](https://appshunter.io/ios/app/interval-min/id937916331)

Test your music theory knowledge by identifying chords. Listen to musical notation and select the correct chord from multiple choices. Improve your understanding of music with repeated play and adjustable instruments.

**Highlights:** Chord identification gameplay, Musical notation display, Multiple choice answers, Score tracking with penalties, Adjustable instrument sounds (piano, organ), Skip puzzles without penalty

**Features:** Vision Pro support

**In-app purchases:** none


### Know Notes

[App page](https://appshunter.io/ios/app/know-notes-learn-music/id1536356966)

Develop your musical ear by learning to identify notes and chords by sound. This gamified app makes practicing fun and competitive, allowing you to progress from basic notes to sharps and flats.

**Highlights:** Ear training, Note recognition, Chord recognition, Gamified learning, Progressive difficulty, Natural notes, sharps, and flats

**Features:** Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Violin Notes | $0.99 | one-time |
| Electronic Keyboard Notes | $0.99 | one-time |
| Grand Piano Notes | $0.99 | one-time |
| Unlock Violin Instrument | $2.99 | one-time |
| Acoustic Guitar (Major Chords) | $2.99 | one-time |
| Unlock Acoustic Guitar | $3.99 | one-time |


## Frequently asked questions

### Is Interval min free?

Interval min is free to download, with no in-app purchases.

### Is Know Notes free?

Know Notes is free to download, with in-app purchases available.

### Which has better reviews, Interval min or Know Notes?

Interval min is rated higher. Interval min averages 5.0 out of 5 from 6 ratings, while Know Notes averages 4.9 from 32 ratings.

### Do Interval min or Know Notes have ads?

Interval min shows ads; Know Notes does not.

### Which is updated more often, Interval min or Know Notes?

Interval min ships an update every 7 months, and Know Notes fortnightly. Most recently, Interval min was updated on September 30, 2026 and Know Notes on October 9, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*