Comparison

Interval min vs Star Piano

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Chord identification gameplay
  • Musical notation display
  • Multiple choice answers
  • Score tracking with penalties
  • Adjustable instrument sounds (piano, organ)
  • Skip puzzles without penalty
Features
Read full description

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.

About

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.

Highlights
  • 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
Features
Read full description

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

Interval min3 screens
Star Piano3 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard5 real differences · 5 level
Interval min versus Star Piano: the parameters behind the verdict, then further details
ParameterInterval minStar Piano
PriceFreeFree
Rating5.0 (6 ratings) — better1.0 (1 ratings)
Positive reviews50.0% of reviews—
Number of ratings6 — better1
Update frequencyEvery 7 monthsEvery 4 months — better
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supportedFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.09.0 — better
Further details — not scored
Size21 MB195 MB
Age rating4+4+
DeveloperKelly Technology Inc.Egg Carton Studios

Customer experience

Interval min

All ratings6 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Star Piano

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Interval min

No in-app purchases

None

Star Piano

No in-app purchases

Questions

Is Interval min free?
Interval min is free to download, with no in-app purchases.
Is Star Piano free?
Star Piano is free to download, with no in-app purchases.
Which has better reviews, Interval min or Star Piano?
Interval min is rated higher. Interval min averages 5.0 out of 5 from 6 ratings, while Star Piano averages 1.0 from 1 ratings.
Do Interval min or Star Piano have ads?
Interval min shows ads; Star Piano does not.
Which is updated more often, Interval min or Star Piano?
Interval min ships an update every 7 months, and Star Piano every 4 months. Most recently, Interval min was updated on October 15, 2026 and Star Piano on October 7, 2026.

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