Retain Cards: AI Flashcards vs Estill Exercises
Retain Cards: AI Flashcards
Retain Labs GmbH
App Store
$149/mo
~$1.8K/yr · 7K installs
VS
Estill Exercises
Estill Voice International
Google Play
$118/mo
~$1.4K/yr · 7K installs
Revenue winner
Retain Cards: AI Flashcards wins
+26% vs other
Installs winner
Estill Exercises wins
+11% vs other
MAU winner
Estill Exercises wins
+7% vs other
Rating winner
Retain Cards: AI Flashcards wins
+450% vs other
Why Retain Cards: AI Flashcards is winning
Top 3 reasons - backed by the public App Store / Play Store numbers.
- Subscription model. Retain Cards: AI Flashcards runs a $12.99/mo subscription that compounds; Estill Exercises relies on one-shot IAP or ads.
- More monetization surfaces. Retain Cards: AI Flashcards runs 6 IAP tiers vs 0 - more chances to convert users at the right price.
- Better app store reviews. Retain Cards: AI Flashcards sits at 4.50★ vs 0.00★ - store algorithms reward higher-rated apps with more impressions.
→ Find more apps with this revenue gap · Full Retain Cards: AI Flashcards report
Side-by-side metrics
Bars scale to whichever app is bigger on that row. Green = winner.
Retain Cards: AI Flashcards
vs
Estill Exercises
Monthly revenue (est.)?
$149
◀
$118
Annual revenue (est.)
$1.8K
◀
$1.4K
Lifetime installs (est.)
7K
▶
7K
Monthly active users (est.)?
765.6
▶
817.152
App Store rating
4.50★
◀
-
Total ratings
132
◀
0
US grossing rank
-
=
-
Cheapest monthly sub
$12.99
◀
No sub
IAP tiers detected
6 tiers
◀
0 tiers
- Category
- Education
- Price
- Free
- Released
- May 7, 2025
- Last updated
- Apr 24, 2026
- File size
- 9.5 MB
- Content rating
- 4+
- Version
- 2.5
- Languages
- Danish, Dutch, English, Finnish, French, German +5 more
- Category
- Education
- Price
- Free
- Released
- Aug 6, 2020
- Last updated
- Aug 12, 2025
- File size
- -
- Content rating
- Everyone
- Version
- 1.0.59
- Languages
- -
Retain Cards: AI Flashcards trajectory
Estill Exercises trajectory
FAQ
Which makes more money, Retain Cards: AI Flashcards or Estill Exercises? v
Retain Cards: AI Flashcards earns about $149 per month, while Estill Exercises earns about $118. That is a 1.3× revenue gap (~$31 more per month for Retain Cards: AI Flashcards). Annual revenue: Retain Cards: AI Flashcards ≈ $1.8K/year, Estill Exercises ≈ $1.4K/year. Estimates are derived from public App Store / Google Play signals - grossing rank, scraped IAP tiers, ratings and category benchmarks.
Which has more downloads, Retain Cards: AI Flashcards or Estill Exercises? v
Estill Exercises leads with about 7K estimated downloads vs 7K for Retain Cards: AI Flashcards - a 1.1× gap. Retain Cards: AI Flashcards's App Store downloads are estimated from 132 ratings × the standard 1:75 ratio. Estill Exercises reports 5,000+ installs on Google Play.
Are Retain Cards: AI Flashcards and Estill Exercises 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 Retain Cards: AI Flashcards and Estill Exercises offer? v
Retain Cards: AI Flashcards: IAP range 6 tiers detected. Estill Exercises: IAP range $9.99 per item. Retain Cards: AI Flashcards runs a "Subscription (~$5.99/mo)" monetization model; Estill Exercises runs "Free + IAP (tiers not exposed by store)". 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 Estill Exercises? v
Retain Cards: AI Flashcards edges ahead with a higher overall score (gap of 4.5 stars). Rating volume: Retain Cards: AI Flashcards 132 ratings, Estill Exercises 0 ratings. Higher rating volume = stronger ASO signal even when star averages are close.
How accurate are these Retain Cards: AI Flashcards vs Estill Exercises revenue estimates? v
Directional - typically within 2-3× of actual money earned for popular apps. The $149 for Retain Cards: AI Flashcards and $118 for Estill Exercises 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 Retain Cards: AI Flashcards or Estill Exercises 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.