Retain Cards: AI Flashcards vs StudyStream
Retain Cards: AI Flashcards
Retain Labs GmbH
App Store
$217/mo
~$2.6K/yr · 10K installs
VS
StudyStream
Knowledge Collective
App Store
$363/mo
~$4.4K/yr · 17K installs
Revenue winner
StudyStream wins
+67% vs other
Installs winner
StudyStream wins
+73% vs other
MAU winner
StudyStream wins
+72% vs other
Rating winner
Retain Cards: AI Flashcards wins
+2% vs other
Why StudyStream is winning
Top 3 reasons - backed by the public App Store / Play Store numbers.
- StudyStream earns roughly 2× more per month than Retain Cards: AI Flashcards - $363 vs $217.
- Aggressive pricing. StudyStream undercuts at $1.00/mo vs $12.99/mo - converts a higher % of free users.
- Bigger install base. StudyStream has ~17K lifetime installs vs Retain Cards: AI Flashcards's ~10K - 1.7× the funnel top.
→ Find more apps with this revenue gap · Full StudyStream report
Side-by-side metrics
Bars scale to whichever app is bigger on that row. Green = winner.
Retain Cards: AI Flashcards
vs
StudyStream
Monthly revenue (est.)?
$217
▶
$363
Annual revenue (est.)
$2.6K
▶
$4.4K
Lifetime installs (est.)
10K
▶
17K
Monthly active users (est.)?
1K
▶
2K
App Store rating
4.46★
◀
4.37★
Total ratings
193
▶
334
US grossing rank
-
=
-
Cheapest monthly sub
$12.99
◀
$1.00
IAP tiers detected
6 tiers
=
6 tiers
- Category
- Education
- Price
- Free
- Released
- May 7, 2025
- Last updated
- Jun 30, 2026
- File size
- 9.8 MB
- Content rating
- 4+
- Version
- 2.7
- Languages
- Danish, Dutch, English, Finnish, French, German +6 more
- Category
- Education
- Price
- Free
- Released
- Jan 16, 2024
- Last updated
- Jun 26, 2026
- File size
- 126.4 MB
- Content rating
- 17+
- Version
- 1.0.97
- Languages
- English
Retain Cards: AI Flashcards trajectory
StudyStream trajectory
FAQ
Which makes more money, Retain Cards: AI Flashcards or StudyStream? v
StudyStream earns about $363 per month, while Retain Cards: AI Flashcards earns about $217. That is a 1.7× revenue gap (~$146 more per month for StudyStream). Annual revenue: Retain Cards: AI Flashcards ≈ $2.6K/year, StudyStream ≈ $4.4K/year. Estimates are derived from public App Store signals - grossing rank, scraped IAP tiers, ratings and category benchmarks.
Which has more downloads, Retain Cards: AI Flashcards or StudyStream? v
StudyStream leads with about 17K estimated downloads vs 10K for Retain Cards: AI Flashcards - a 1.7× gap. Retain Cards: AI Flashcards's App Store downloads are estimated from 193 ratings × the standard 1:75 ratio. StudyStream's App Store downloads are estimated from 334 ratings.
Are Retain Cards: AI Flashcards and StudyStream 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 Retain Cards: AI Flashcards and StudyStream offer? v
Retain Cards: AI Flashcards: IAP range 6 tiers detected. StudyStream: IAP range 6 tiers detected. Retain Cards: AI Flashcards runs a "Subscription (~$5.99/mo)" monetization model; StudyStream runs "Subscription (~$5.83/mo)". Scraped tier prices and detected subscription pricing drive the bulk of the per-app revenue estimate above.
Which has better ratings, Retain Cards: AI Flashcards or StudyStream? v
Retain Cards: AI Flashcards edges ahead with ★ 4.5 vs ★ 4.4 (gap of 0.1 stars). Rating volume: Retain Cards: AI Flashcards 193 ratings, StudyStream 334 ratings. Higher rating volume = stronger ASO signal even when star averages are close.
How accurate are these Retain Cards: AI Flashcards vs StudyStream revenue estimates? v
Directional - typically within 2-3× of actual money earned for popular apps. The $217 for Retain Cards: AI Flashcards and $363 for StudyStream 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 Retain Cards: AI Flashcards or StudyStream 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.