flowkey - Learn to Play Piano vs Rock Identifier: Stone ID
flowkey - Learn to Play Piano
flowkey GmbH
App Store
$532.1K/mo
~$6.38M/yr · 7.0M installs
VS
Rock Identifier: Stone ID
Next Vision Limited
App Store
$118.6K/mo
~$1.42M/yr · 7.8M installs
Revenue winner
flowkey - Learn to Play Piano wins
+348% vs other
Installs winner
Rock Identifier: Stone ID wins
+12% vs other
MAU winner
Rock Identifier: Stone ID wins
+12% vs other
Rating winner
flowkey - Learn to Play Piano wins
+1% vs other
Why flowkey - Learn to Play Piano is winning
Top 2 reasons - backed by the public App Store / Play Store numbers.
- flowkey - Learn to Play Piano earns roughly 4× more per month than Rock Identifier: Stone ID - $532.1K vs $118.6K.
- Premium pricing. flowkey - Learn to Play Piano charges $19.99/mo vs Rock Identifier: Stone ID's $3.99/mo - higher ARPU per converted user.
→ Find more apps with this revenue gap · Full flowkey - Learn to Play Piano report
Side-by-side metrics
Bars scale to whichever app is bigger on that row. Green = winner.
flowkey - Learn to Play Piano
vs
Rock Identifier: Stone ID
Monthly revenue (est.)?
$532.1K
◀
$118.6K
Annual revenue (est.)
$6.38M
◀
$1.42M
Lifetime installs (est.)
7.0M
▶
7.8M
Monthly active users (est.)?
822K
▶
921K
App Store rating
4.72★
◀
4.67★
Total ratings
63K
▶
71K
US grossing rank
-
=
-
Cheapest monthly sub
$19.99
◀
$3.99
IAP tiers detected
2 tiers
◀
1 tiers
- Category
- Education
- Price
- Free
- Released
- Aug 21, 2015
- Last updated
- May 7, 2026
- File size
- 104.3 MB
- Content rating
- 4+
- Version
- 2.106.1
- Languages
- English, French, German, Italian, Japanese, Korean +5 more
- Category
- Education
- Price
- Free
- Released
- Jan 26, 2021
- Last updated
- Feb 9, 2026
- File size
- 224.4 MB
- Content rating
- 4+
- Version
- 2.19.2
- Languages
- Arabic, Dutch, English, French, German, Italian +8 more
flowkey - Learn to Play Piano trajectory
Rock Identifier: Stone ID trajectory
FAQ
Which makes more money, flowkey - Learn to Play Piano or Rock Identifier: Stone ID? v
flowkey - Learn to Play Piano earns about $532.1K per month, while Rock Identifier: Stone ID earns about $118.6K. That is a 4.5× revenue gap (~$413.4K more per month for flowkey - Learn to Play Piano). Annual revenue: flowkey - Learn to Play Piano ≈ $6.38M/year, Rock Identifier: Stone ID ≈ $1.42M/year. Estimates are derived from public App Store signals - grossing rank, scraped IAP tiers, ratings and category benchmarks.
Which has more downloads, flowkey - Learn to Play Piano or Rock Identifier: Stone ID? v
Rock Identifier: Stone ID leads with about 7.8M estimated downloads vs 7.0M for flowkey - Learn to Play Piano - a 1.1× gap. flowkey - Learn to Play Piano's App Store downloads are estimated from 63K ratings × the standard 1:75 ratio. Rock Identifier: Stone ID's App Store downloads are estimated from 71K ratings.
Are flowkey - Learn to Play Piano and Rock Identifier: Stone ID in the same App Store category and competing for the same money? v
Yes - both apps sit in the Education category, which means they compete directly for the same paying users and category-level wallet share. Direct competitors, head-to-head.
What in-app purchases and subscription pricing do flowkey - Learn to Play Piano and Rock Identifier: Stone ID offer? v
flowkey - Learn to Play Piano: IAP range 2 tiers detected. Rock Identifier: Stone ID: IAP range 1 tiers detected. flowkey - Learn to Play Piano runs a "Subscription (~$19.99/mo)" monetization model; Rock Identifier: Stone ID runs "Subscription (~$3.99/mo)". Scraped tier prices and detected subscription pricing drive the bulk of the per-app revenue estimate above.
Which has better ratings, flowkey - Learn to Play Piano or Rock Identifier: Stone ID? v
flowkey - Learn to Play Piano edges ahead with ★ 4.7 vs ★ 4.7 (gap of 0.1 stars). Rating volume: flowkey - Learn to Play Piano 63K ratings, Rock Identifier: Stone ID 71K ratings. Higher rating volume = stronger ASO signal even when star averages are close.
How accurate are these flowkey - Learn to Play Piano vs Rock Identifier: Stone ID revenue estimates? v
Directional - typically within 2-3× of actual money earned for popular apps. The $532.1K for flowkey - Learn to Play Piano and $118.6K for Rock Identifier: Stone ID are derived from App Store grossing rank, scraped IAP tiers, ratings volume and category benchmarks (Education) - net of the 15-30% Apple/Google store cut. Real revenue depends on country mix, retention, refunds and ad fill rate, none of which Apple or Google publish.
How do I compare flowkey - Learn to Play Piano or Rock Identifier: Stone ID to a different App Store app? v
Use the search box at the bottom of this page or paste any two App Store links into the homepage tool. We auto-generate a permanent comparison URL with revenue, downloads, IAP tiers, subscription pricing and grossing rank for both apps.