Circle of Fifth Clock vs Strikey
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Circle of Fifth Clock
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画面をタップすると、時間に応じた和音が演奏されます。 画面を上下にスワイプすると、五度圏を回転させることができ、二本指でタップすると、長調と短調を切り替えることができます。 時計中央のボタンをタップすると、音色や五度圏の表示、演奏パターン、長調・短調を切り替えることができます。 現時点で対応している音色は、「FMシンセ」「サイン波シンセ」「ピアノ」の 3 種類です。 再生される和声は、Key=C となります。 背景の色合いは時間に応じて変化します。
Strikey
Learn piano with hundreds of easy tutorials for popular songs. Get step-by-step guidance, instant feedback, and a personalized learning path. Perfect for beginners of all ages.
- Hundreds of easy piano tutorials
- Popular song lessons
- Step-by-step guidance
- Instant feedback
- Tailored learning journey
- Short songs under a minute
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Learn Piano the Easy Way! Strikey is the ultimate app for beginners learning to play piano. Discover hundreds of easy piano tutorials featuring popular songs you love—perfect for anyone starting their piano journey. Why Choose Strikey? * Play short, easy songs (all under a minute) with step-by-step guidance. * Get instant feedback to improve as you play. * Follow a tailored journey for every song, designed just for you! Whether you're a beginner piano player, a parent seeking kids’ piano lessons, or want to learn songs on piano in a fun way, Strikey makes it simple! Install the app now and start playing your favorite songs today! • Privacy Policy: https://www.onlinepianist.com/legal/privacy • Terms of Service: https://www.onlinepianist.com/legal/terms • Terms of User (EULA): https://www.onlinepianist.com/legal/eula
Screenshots
Verdict
The clearest difference is price: Strikey at Free against Circle of Fifth Clock's $1.99. Strikey also leads on update cadence (every 4 months vs every 21 months). Circle of Fifth Clock's advantage is in-app purchases (none vs 4) and iOS requirement (12 vs 16.0). On ads 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
Strikey is free to download; Circle of Fifth Clock costs $1.99 up front. Strikey sells 4 in-app purchases, starting at $4.99 per month. Circle of Fifth Clock asks for nothing beyond the download.
Circle of Fifth Clock ships an update every 21 months, Strikey every 4 months. The most recent releases landed on October 19, 2026 and October 30, 2026 respectively.
| Parameter | Circle of Fifth Clock | Strikey |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | — | 4.3 (16 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 16 — better |
| Update frequency | Every 21 months | Every 4 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 12 — better | 16.0 |
| Further details — not scored | ||
| Size | 87 MB | 196 MB |
| Age rating | 4+ | 4+ |
| Developer | feb19 | Online Pianist |
In-app purchases
Circle of Fifth Clock
No in-app purchases
Strikey
- 1 Month Subscription$4.991 Month
- Strikey - Yearly Subscription$9.991 Year
- Strikey - Yearly Subscription7 Days trial$29.991 Year
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- 1 Year Subscription$29.991 Year
Questions
Is Circle of Fifth Clock free?
Is Strikey free?
Do Circle of Fifth Clock or Strikey have ads?
Which is updated more often, Circle of Fifth Clock or Strikey?
Other comparisons
