Interval min vs Know Notes
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Interval min
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.
- Chord identification gameplay
- Musical notation display
- Multiple choice answers
- Score tracking with penalties
- Adjustable instrument sounds (piano, organ)
- Skip puzzles without penalty
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Challenge your musical skill with Interval by determining which chord was played. For each puzzle, three chords are played with the musical notation displayed for the first two. The third chord will be one of four choices displayed - choose your answer by touching the right chord. The point value for each game will be added to your score for the correct answer, but half the points will be deducted for each wrong one. You can play the three chords as many times as you like, and you can move on to the next puzzle without answering and without penalty. Your musical knowledge will increase with repeated playing of the game. You can choose between piano and church organ for the game's instrument.
Know Notes
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.
- Ear training
- Note recognition
- Chord recognition
- Gamified learning
- Progressive difficulty
- Natural notes, sharps, and flats
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Train Ears, Master Music. Learn to recognize musical notes and chords by their unique sound. Gamified to make learning fun and competitive. Start small, then work your way up to learn every natural note and their sharp/flat.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Interval min | Know Notes |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (6 ratings) — better | 4.9 (32 ratings) |
| Positive reviews | 50.0% of reviews | 95.7% of reviews — better |
| Number of ratings | 6 | 32 — better |
| Update frequency | Every 7 months | Fortnightly — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 14.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 21 MB | 107 MB |
| Age rating | 4+ | 4+ |
| Developer | Kelly Technology Inc. | wylan neely |
Customer experience
Interval min
Know Notes
In-app purchases
Interval min
No in-app purchases
Know Notes
- Violin Notes$0.99
- Electronic Keyboard Notes$0.99
- Grand Piano Notes$0.99
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- Unlock Violin Instrument$2.99
- Acoustic Guitar (Major Chords)$2.99
- Unlock Acoustic Guitar$3.99
Questions
Is Interval min free?
Is Know Notes free?
Which has better reviews, Interval min or Know Notes?
Do Interval min or Know Notes have ads?
Which is updated more often, Interval min or Know Notes?
Other comparisons
