Official DVSA Theory Test Kit vs Rock Identifier: Stone ID
Official DVSA Theory Test Kit
TSO (The Stationery Office)
App Store
$439/mo
~$5.3K/yr · 3K installs
VS
Rock Identifier: Stone ID
Next Vision Limited
App Store
$118.4K/mo
~$1.42M/yr · 7.8M installs
Revenue winner
Rock Identifier: Stone ID wins
+26873% vs other
Installs winner
Rock Identifier: Stone ID wins
+283212% vs other
MAU winner
Rock Identifier: Stone ID wins
+290603% vs other
Rating winner
Rock Identifier: Stone ID wins
+6% vs other
Why Rock Identifier: Stone ID is winning
Top 3 reasons - backed by the public App Store / Play Store numbers.
- Rock Identifier: Stone ID earns roughly 270× more per month than Official DVSA Theory Test Kit - $118.4K vs $439.
- Aggressive pricing. Rock Identifier: Stone ID undercuts at $3.99/mo vs $21.68/mo - converts a higher % of free users.
- Bigger install base. Rock Identifier: Stone ID has ~7.8M lifetime installs vs Official DVSA Theory Test Kit's ~3K - 2833.1× the funnel top.
→ Find more apps with this revenue gap · Full Rock Identifier: Stone ID report
Side-by-side metrics
Bars scale to whichever app is bigger on that row. Green = winner.
Official DVSA Theory Test Kit
vs
Rock Identifier: Stone ID
Monthly revenue (est.)?
$439
▶
$118.4K
Annual revenue (est.)
$5.3K
▶
$1.42M
Lifetime installs (est.)
3K
▶
7.8M
Monthly active users (est.)?
316.25
▶
919K
App Store rating
4.38★
▶
4.67★
Total ratings
55
▶
71K
US grossing rank
-
=
-
Cheapest monthly sub
$21.68
◀
$3.99
IAP tiers detected
2 tiers
◀
1 tiers
- Category
- Education
- Price
- USD5.99
- Released
- Sep 20, 2011
- Last updated
- Apr 23, 2026
- File size
- 1.16 GB
- Content rating
- 4+
- Version
- 6.13.1
- Languages
- English
- 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
Official DVSA Theory Test Kit trajectory
Rock Identifier: Stone ID trajectory
FAQ
Which makes more money, Official DVSA Theory Test Kit or Rock Identifier: Stone ID? v
Rock Identifier: Stone ID earns about $118.4K per month, while Official DVSA Theory Test Kit earns about $439. That is a 269.7× revenue gap (~$118.0K more per month for Rock Identifier: Stone ID). Annual revenue: Official DVSA Theory Test Kit ≈ $5.3K/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, Official DVSA Theory Test Kit or Rock Identifier: Stone ID? v
Rock Identifier: Stone ID leads with about 7.8M estimated downloads vs 3K for Official DVSA Theory Test Kit - a 2833.1× gap. Official DVSA Theory Test Kit's App Store downloads are estimated from 55 ratings × the standard 1:75 ratio. Rock Identifier: Stone ID's App Store downloads are estimated from 71K ratings.
Are Official DVSA Theory Test Kit 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 Official DVSA Theory Test Kit and Rock Identifier: Stone ID offer? v
Official DVSA Theory Test Kit: IAP range 2 tiers detected. Rock Identifier: Stone ID: IAP range 1 tiers detected. Official DVSA Theory Test Kit runs a "Paid app ($5.99)" 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, Official DVSA Theory Test Kit or Rock Identifier: Stone ID? v
Rock Identifier: Stone ID edges ahead with ★ 4.7 vs ★ 4.4 (gap of 0.3 stars). Rating volume: Official DVSA Theory Test Kit 55 ratings, Rock Identifier: Stone ID 71K ratings. Higher rating volume = stronger ASO signal even when star averages are close.
How accurate are these Official DVSA Theory Test Kit vs Rock Identifier: Stone ID revenue estimates? v
Directional - typically within 2-3× of actual money earned for popular apps. The $439 for Official DVSA Theory Test Kit and $118.4K 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 Official DVSA Theory Test Kit 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.