Astra AI: Study & Exam Prep vs Notan: Grade Calculator
Astra AI: Study & Exam Prep
Astra AI d.o.o.
App Store
$10.1K/mo
~$120.8K/yr · 262K installs
VS
Notan: Grade Calculator
Tien Do Nam
Google Play
$10.7K/mo
~$128.9K/yr · 828K installs
Revenue winner
Notan: Grade Calculator wins
+7% vs other
Installs winner
Notan: Grade Calculator wins
+216% vs other
MAU winner
Notan: Grade Calculator wins
+139% vs other
Rating winner
Notan: Grade Calculator wins
+3% vs other
Why Notan: Grade Calculator is winning
Top 1 reasons - backed by the public App Store / Play Store numbers.
- Bigger install base. Notan: Grade Calculator has ~828K lifetime installs vs Astra AI: Study & Exam Prep's ~262K - 3.2× the funnel top.
→ Find more apps with this revenue gap · Full Notan: Grade Calculator report
Side-by-side metrics
Bars scale to whichever app is bigger on that row. Green = winner.
Astra AI: Study & Exam Prep
vs
Notan: Grade Calculator
Monthly revenue (est.)?
$10.1K
▶
$10.7K
Annual revenue (est.)
$120.8K
▶
$128.9K
Lifetime installs (est.)
262K
▶
828K
Monthly active users (est.)?
31K
▶
75K
App Store rating
4.79★
▶
4.93★
Total ratings
3K
◀
3K
US grossing rank
-
=
-
Cheapest monthly sub
$24.00
◀
No sub
IAP tiers detected
8 tiers
◀
0 tiers
- Category
- Education
- Price
- Free
- Released
- Aug 29, 2025
- Last updated
- Jun 23, 2026
- File size
- 15.5 MB
- Content rating
- 9+
- Version
- 5.2
- Languages
- Arabic, AZ, Bulgarian, Catalan, Croatian, Czech +32 more
- Category
- Education
- Price
- Free
- Released
- Jan 4, 2020
- Last updated
- Jun 24, 2026
- File size
- -
- Content rating
- Everyone
- Version
- 2.19.7
- Languages
- -
Astra AI: Study & Exam Prep trajectory
Notan: Grade Calculator trajectory
FAQ
Which makes more money, Astra AI: Study & Exam Prep or Notan: Grade Calculator? v
Notan: Grade Calculator earns about $10.7K per month, while Astra AI: Study & Exam Prep earns about $10.1K. That is a 1.1× revenue gap (~$674 more per month for Notan: Grade Calculator). Annual revenue: Astra AI: Study & Exam Prep ≈ $120.8K/year, Notan: Grade Calculator ≈ $128.9K/year. Estimates are derived from public App Store / Google Play signals - grossing rank, scraped IAP tiers, ratings and category benchmarks.
Which has more downloads, Astra AI: Study & Exam Prep or Notan: Grade Calculator? v
Notan: Grade Calculator leads with about 828K estimated downloads vs 262K for Astra AI: Study & Exam Prep - a 3.2× gap. Astra AI: Study & Exam Prep's App Store downloads are estimated from 3K ratings × the standard 1:75 ratio. Notan: Grade Calculator reports 500,000+ installs on Google Play.
Are Astra AI: Study & Exam Prep and Notan: Grade Calculator 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 Astra AI: Study & Exam Prep and Notan: Grade Calculator offer? v
Astra AI: Study & Exam Prep: IAP range 8 tiers detected. Notan: Grade Calculator: IAP range $4.99 per item. Astra AI: Study & Exam Prep runs a "Subscription (~$10.00/mo)" monetization model; Notan: Grade Calculator 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, Astra AI: Study & Exam Prep or Notan: Grade Calculator? v
Notan: Grade Calculator edges ahead with ★ 4.9 vs ★ 4.8 (gap of 0.1 stars). Rating volume: Astra AI: Study & Exam Prep 3K ratings, Notan: Grade Calculator 3 ratings. Higher rating volume = stronger ASO signal even when star averages are close.
How accurate are these Astra AI: Study & Exam Prep vs Notan: Grade Calculator revenue estimates? v
Directional - typically within 2-3× of actual money earned for popular apps. The $10.1K for Astra AI: Study & Exam Prep and $10.7K for Notan: Grade Calculator 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 Astra AI: Study & Exam Prep or Notan: Grade Calculator 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.