Official Life in the UK Test vs DuoCards - Vocabulary Builder

Official Life in the UK Test

TSO (The Stationery Office)
App Store
$80/mo
~$958/yr · 500 installs
VS

DuoCards - Vocabulary Builder

DuoCards
Google Play
$300.4K/mo
~$3.61M/yr · 5.4M installs
Revenue winner DuoCards - Vocabulary Builder wins +375454% vs other
Installs winner DuoCards - Vocabulary Builder wins +1073056% vs other
MAU winner DuoCards - Vocabulary Builder wins +1419236% vs other
Rating winner DuoCards - Vocabulary Builder wins +160% vs other

Why DuoCards - Vocabulary Builder is winning

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

  1. DuoCards - Vocabulary Builder earns roughly 3756× more per month than Official Life in the UK Test - $300.4K vs $80.
  2. Premium pricing. DuoCards - Vocabulary Builder charges $26.94/mo vs Official Life in the UK Test's $9.99/mo - higher ARPU per converted user.
  3. Bigger install base. DuoCards - Vocabulary Builder has ~5.4M lifetime installs vs Official Life in the UK Test's ~500 - 10731.6× the funnel top.
  4. Better app store reviews. DuoCards - Vocabulary Builder sits at 4.41★ vs 1.70★ - store algorithms reward higher-rated apps with more impressions.

→ Find more apps with this revenue gap · Full DuoCards - Vocabulary Builder report

Side-by-side metrics

Bars scale to whichever app is bigger on that row. Green = winner.

Official Life in the UK Test
vs
DuoCards - Vocabulary Builder
Monthly revenue (est.)?
$80
▶
$300.4K
Annual revenue (est.)
$958
▶
$3.61M
Lifetime installs (est.)
500
▶
5.4M
Monthly active users (est.)?
46.5
▶
660K
App Store rating
1.70★
▶
4.41★
Total ratings
10
▶
53K
US grossing rank
-
=
-
Cheapest monthly sub
$9.99
▶
$26.94
IAP tiers detected
1 tiers
◀
0 tiers

Official Life in the UK Test

TSO (The Stationery Office)
App Store
Category
Education
Price
USD5.99
Released
Apr 12, 2013
Last updated
May 27, 2026
File size
149.8 MB
Content rating
4+
Version
2.9.3
Languages
English
View full Official Life in the UK Test report →

DuoCards - Vocabulary Builder

DuoCards
Google Play
Category
Education
Price
Free
Released
Apr 4, 2020
Last updated
Jan 21, 2026
File size
-
Content rating
Everyone
Version
1.20.15
Languages
-
View full DuoCards - Vocabulary Builder report →

Official Life in the UK Test trajectory

AugSepOctNovDecJanFebMarAprMayJunJul

DuoCards - Vocabulary Builder trajectory

AugSepOctNovDecJanFebMarAprMayJunJul

Related app pages

Official Life in the UK Test App Store page →DuoCards - Vocabulary Builder Play Store page →

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FAQ

Which makes more money, Official Life in the UK Test or DuoCards - Vocabulary Builder? v
DuoCards - Vocabulary Builder earns about $300.4K per month, while Official Life in the UK Test earns about $80. That is a 3755.5× revenue gap (~$300.4K more per month for DuoCards - Vocabulary Builder). Annual revenue: Official Life in the UK Test ≈ $958/year, DuoCards - Vocabulary Builder ≈ $3.61M/year. Estimates are derived from public App Store / Google Play signals - grossing rank, scraped IAP tiers, ratings and category benchmarks.
Which has more downloads, Official Life in the UK Test or DuoCards - Vocabulary Builder? v
DuoCards - Vocabulary Builder leads with about 5.4M estimated downloads vs 500 for Official Life in the UK Test - a 10731.6× gap. Official Life in the UK Test's App Store downloads are estimated from 10 ratings × the standard 1:75 ratio. DuoCards - Vocabulary Builder reports 5,000,000+ installs on Google Play.
Are Official Life in the UK Test and DuoCards - Vocabulary Builder in the same App Store category on each store 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 Life in the UK Test and DuoCards - Vocabulary Builder offer? v
Official Life in the UK Test: IAP range 1 tiers detected. DuoCards - Vocabulary Builder: IAP range $6.70 - $108.33 per item. Official Life in the UK Test runs a "Paid app ($5.99)" monetization model; DuoCards - Vocabulary Builder runs "Subscription (~$26.94/mo, language)". Scraped tier prices and detected subscription pricing drive the bulk of the per-app revenue estimate above.
Which has better ratings, Official Life in the UK Test or DuoCards - Vocabulary Builder? v
DuoCards - Vocabulary Builder edges ahead with ★ 4.4 vs ★ 1.7 (gap of 2.7 stars). Rating volume: Official Life in the UK Test 10 ratings, DuoCards - Vocabulary Builder 660 ratings. Higher rating volume = stronger ASO signal even when star averages are close.
How accurate are these Official Life in the UK Test vs DuoCards - Vocabulary Builder revenue estimates? v
Directional - typically within 2-3× of actual money earned for popular apps. The $80 for Official Life in the UK Test and $300.4K for DuoCards - Vocabulary Builder are derived from App Store grossing rank / Google Play install ranges, 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 Life in the UK Test or DuoCards - Vocabulary Builder to a different App Store app? v
Use the search box at the bottom of this page or paste any two App Store or Google Play 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.