Interval min vs Star Piano
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.
Star Piano
Learn to play piano with interactive lessons and multiple game modes. Unlock new songs and explore different instruments as you progress through over 150 levels. Requires a compatible Bluetooth piano accessory.
- Over 150 unlockable levels
- 6 gameplay types (rhythm, listening, scaling, chords, sheet music, songs)
- Step-by-step learning
- 10 different worlds
- Earn coins to unlock songs
- Free style play with 15 instruments
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IMPORTANT: Please note this app only works when connected via Bluetooth to an iWord Bluetooth piano. Star Piano is the easiest and fun way to play piano! Over 150 unlockable levels and 6 types of different gameplay: rhythm, listening, scaling, chords, sheet music, and songs. With step by step learning, anyone can learn how to play piano! Features: - 10 worlds. Over 150 unlockable levels - Earn coins to unlock songs in Song Library - Free style play with 15 different types of instruments Instruments: - Piano - Acoustic Guitar - Cathedral Organ - Clarinet - Electric Piano - Flute - Glockenspiel - Grand Piano - Hard Rock Guitar - Harp - Hollywood Strings - Music Box - Organ - Saxophone - Trumpet - Vibraphone Languages: - English - Spanish - Traditional Chinese - Simplified Chinese - Japanese - Italian - Pilipino - German - Korean Let the music begin!! Visit us at: http://www.sziword.com/
Screenshots
Verdict
The clearest difference is rating: Interval min at 5.0 against Star Piano's 1.0. Interval min also leads on ratings volume (6 vs 1). Star Piano's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, update cadence, in-app purchases and device support 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. Neither carries in-app purchases, so what you see is what you pay.
Interval min holds the better App Store score, 5.0 against 1.0. That said, the two scores are not equally well evidenced: Interval min has 6 ratings behind it against 1, so its average is the more settled of the two.
Interval min ships an update every 7 months, Star Piano every 4 months. The most recent releases landed on October 15, 2026 and October 7, 2026 respectively.
| Parameter | Interval min | Star Piano |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (6 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 6 — better | 1 |
| Update frequency | Every 7 months | Every 4 months — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 | 9.0 — better |
| Further details — not scored | ||
| Size | 21 MB | 195 MB |
| Age rating | 4+ | 4+ |
| Developer | Kelly Technology Inc. | Egg Carton Studios |
Customer experience
Interval min
Star Piano
In-app purchases
Interval min
No in-app purchases
Star Piano
No in-app purchases
Questions
Is Interval min free?
Is Star Piano free?
Which has better reviews, Interval min or Star Piano?
Do Interval min or Star Piano have ads?
Which is updated more often, Interval min or Star Piano?
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