Question.AI-Math Calculator vs Retain Cards: AI Flashcards

Question.AI-Math Calculator

3HOUSE
App Store
$2.26M/mo
~$27.18M/yr · 7.1M installs
VS

Retain Cards: AI Flashcards

Retain Labs GmbH
App Store
$217/mo
~$2.6K/yr · 10K installs
Revenue winner Question.AI-Math Calculator wins +1043507% vs other
Installs winner Question.AI-Math Calculator wins +73930% vs other
MAU winner Question.AI-Math Calculator wins +397494% vs other
Rating winner Question.AI-Math Calculator wins +5% vs other

Why Question.AI-Math Calculator is winning

Top 3 reasons - backed by the public App Store / Play Store numbers.

  1. Question.AI-Math Calculator earns roughly 10436× more per month than Retain Cards: AI Flashcards - $2.26M vs $217.
  2. Aggressive pricing. Question.AI-Math Calculator undercuts at $8.99/mo vs $12.99/mo - converts a higher % of free users.
  3. Bigger install base. Question.AI-Math Calculator has ~7.1M lifetime installs vs Retain Cards: AI Flashcards's ~10K - 740.3× the funnel top.

→ Find more apps with this revenue gap · Full Question.AI-Math Calculator report

Side-by-side metrics

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

Question.AI-Math Calculator
vs
Retain Cards: AI Flashcards
Monthly revenue (est.)?
$2.26M
◀
$217
Annual revenue (est.)
$27.18M
◀
$2.6K
Lifetime installs (est.)
7.1M
◀
10K
Monthly active users (est.)?
4.5M
◀
1K
App Store rating
4.70★
◀
4.46★
Total ratings
159K
◀
193
US grossing rank
-
=
-
Cheapest monthly sub
$8.99
▶
$12.99
IAP tiers detected
4 tiers
▶
6 tiers

Question.AI-Math Calculator

3HOUSE
App Store
Category
Education
Price
Free
Released
May 30, 2023
Last updated
Jun 15, 2026
File size
145.4 MB
Content rating
4+
Version
3.5.10
Languages
Arabic, Dutch, English, French, German, Indonesian +9 more
View full Question.AI-Math Calculator report →

Retain Cards: AI Flashcards

Retain Labs GmbH
App Store
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
View full Retain Cards: AI Flashcards report →

Question.AI-Math Calculator trajectory

AugSepOctNovDecJanFebMarAprMayJunJul

Retain Cards: AI Flashcards trajectory

AugSepOctNovDecJanFebMarAprMayJunJul

Related app pages

Question.AI-Math Calculator App Store page →Retain Cards: AI Flashcards App Store page →

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Compare another pair

FAQ

Which makes more money, Question.AI-Math Calculator or Retain Cards: AI Flashcards? v
Question.AI-Math Calculator earns about $2.26M per month, while Retain Cards: AI Flashcards earns about $217. That is a 10436.1× revenue gap (~$2.26M more per month for Question.AI-Math Calculator). Annual revenue: Question.AI-Math Calculator ≈ $27.18M/year, Retain Cards: AI Flashcards ≈ $2.6K/year. Estimates are derived from public App Store signals - grossing rank, scraped IAP tiers, ratings and category benchmarks.
Which has more downloads, Question.AI-Math Calculator or Retain Cards: AI Flashcards? v
Question.AI-Math Calculator leads with about 7.1M estimated downloads vs 10K for Retain Cards: AI Flashcards - a 740.3× gap. Question.AI-Math Calculator's App Store downloads are estimated from 159K ratings × the standard 1:75 ratio. Retain Cards: AI Flashcards's App Store downloads are estimated from 193 ratings.
Are Question.AI-Math Calculator and Retain Cards: AI Flashcards 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 Question.AI-Math Calculator and Retain Cards: AI Flashcards offer? v
Question.AI-Math Calculator: IAP range 4 tiers detected. Retain Cards: AI Flashcards: IAP range 6 tiers detected. Question.AI-Math Calculator runs a "Subscription (~$8.99/mo, ai)" monetization model; Retain Cards: AI Flashcards runs "Subscription (~$5.99/mo)". Scraped tier prices and detected subscription pricing drive the bulk of the per-app revenue estimate above.
Which has better ratings, Question.AI-Math Calculator or Retain Cards: AI Flashcards? v
Question.AI-Math Calculator edges ahead with ★ 4.7 vs ★ 4.5 (gap of 0.2 stars). Rating volume: Question.AI-Math Calculator 159K ratings, Retain Cards: AI Flashcards 193 ratings. Higher rating volume = stronger ASO signal even when star averages are close.
How accurate are these Question.AI-Math Calculator vs Retain Cards: AI Flashcards revenue estimates? v
Directional - typically within 2-3× of actual money earned for popular apps. The $2.26M for Question.AI-Math Calculator and $217 for Retain Cards: AI Flashcards 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 Question.AI-Math Calculator or Retain Cards: AI Flashcards 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.