Official DVSA Theory Test Kit vs Rock Identifier: Stone ID

Official DVSA Theory Test Kit

TSO (The Stationery Office)
App Store
$455/mo
~$5.5K/yr · 3K installs
VS

Rock Identifier: Stone ID

Next Vision Limited
App Store
$122.9K/mo
~$1.48M/yr · 8.1M installs
Revenue winner Rock Identifier: Stone ID wins +26921% vs other
Installs winner Rock Identifier: Stone ID wins +283773% vs other
MAU winner Rock Identifier: Stone ID wins +291179% vs other
Rating winner Rock Identifier: Stone ID wins +7% vs other

Why Rock Identifier: Stone ID is winning

Top 4 reasons - backed by the public App Store / Play Store numbers.

  1. Rock Identifier: Stone ID earns roughly 270× more per month than Official DVSA Theory Test Kit - $122.9K vs $455.
  2. Aggressive pricing. Rock Identifier: Stone ID undercuts at $3.99/mo vs $21.68/mo - converts a higher % of free users.
  3. Bigger install base. Rock Identifier: Stone ID has ~8.1M lifetime installs vs Official DVSA Theory Test Kit's ~3K - 2838.7× the funnel top.
  4. Better app store reviews. Rock Identifier: Stone ID sits at 4.67★ vs 4.35★ - store algorithms reward higher-rated apps with more impressions.

→ 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.)?
$455
▶
$122.9K
Annual revenue (est.)
$5.5K
▶
$1.48M
Lifetime installs (est.)
3K
▶
8.1M
Monthly active users (est.)?
327.75
▶
955K
App Store rating
4.35★
▶
4.67★
Total ratings
57
▶
74K
US grossing rank
-
=
-
Cheapest monthly sub
$21.68
◀
$3.99
IAP tiers detected
2 tiers
◀
1 tiers

Official DVSA Theory Test Kit

TSO (The Stationery Office)
App Store
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
View full Official DVSA Theory Test Kit report →

Rock Identifier: Stone ID

Next Vision Limited
App Store
Category
Education
Price
Free
Released
Jan 26, 2021
Last updated
Jun 29, 2026
File size
208.2 MB
Content rating
4+
Version
2.20.0
Languages
Arabic, Dutch, English, French, German, Italian +8 more
View full Rock Identifier: Stone ID report →

Official DVSA Theory Test Kit trajectory

AugSepOctNovDecJanFebMarAprMayJunJul

Rock Identifier: Stone ID trajectory

AugSepOctNovDecJanFebMarAprMayJunJul

Related app pages

Official DVSA Theory Test Kit App Store page →Rock Identifier: Stone ID App Store page →

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FAQ

Which makes more money, Official DVSA Theory Test Kit or Rock Identifier: Stone ID? v
Rock Identifier: Stone ID earns about $122.9K per month, while Official DVSA Theory Test Kit earns about $455. That is a 270.2× revenue gap (~$122.5K more per month for Rock Identifier: Stone ID). Annual revenue: Official DVSA Theory Test Kit ≈ $5.5K/year, Rock Identifier: Stone ID ≈ $1.48M/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 8.1M estimated downloads vs 3K for Official DVSA Theory Test Kit - a 2838.7× gap. Official DVSA Theory Test Kit's App Store downloads are estimated from 57 ratings × the standard 1:75 ratio. Rock Identifier: Stone ID's App Store downloads are estimated from 74K 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 57 ratings, Rock Identifier: Stone ID 74K 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 $455 for Official DVSA Theory Test Kit and $122.9K 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.