CITB Op/Spec HS&E test vs Study Notes ABA

CITB Op/Spec HS&E test

CITB
App Store
$112/mo
~$1.3K/yr · 600 installs
VS

Study Notes ABA

Bx Connections LLC
App Store
$9.3K/mo
~$111.0K/yr · 281K installs
Revenue winner Study Notes ABA wins +8159% vs other
Installs winner Study Notes ABA wins +46767% vs other
MAU winner Study Notes ABA wins +39407% vs other
Rating winner CITB Op/Spec HS&E test wins +2% vs other

Why Study Notes ABA is winning

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

  1. Study Notes ABA earns roughly 83× more per month than CITB Op/Spec HS&E test - $9.3K vs $112.
  2. Subscription model. Study Notes ABA runs a $19.99/mo subscription that compounds; CITB Op/Spec HS&E test relies on one-shot IAP or ads.
  3. Bigger install base. Study Notes ABA has ~281K lifetime installs vs CITB Op/Spec HS&E test's ~600 - 468.7× the funnel top.
  4. More monetization surfaces. Study Notes ABA runs 3 IAP tiers vs 0 - more chances to convert users at the right price.

→ Find more apps with this revenue gap · Full Study Notes ABA report

Side-by-side metrics

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

CITB Op/Spec HS&E test
vs
Study Notes ABA
Monthly revenue (est.)?
$112
▶
$9.3K
Annual revenue (est.)
$1.3K
▶
$111.0K
Lifetime installs (est.)
600
▶
281K
Monthly active users (est.)?
72.6
▶
29K
App Store rating
5.00★
◀
4.89★
Total ratings
12
▶
4K
US grossing rank
-
=
-
Cheapest monthly sub
No sub
▶
$19.99
IAP tiers detected
0 tiers
▶
3 tiers

CITB Op/Spec HS&E test

CITB
App Store
Category
Education
Price
USD6.99
Released
May 16, 2019
Last updated
Jan 8, 2026
File size
148.2 MB
Content rating
12+
Version
6.0.52
Languages
English
View full CITB Op/Spec HS&E test report →

Study Notes ABA

Bx Connections LLC
App Store
Category
Education
Price
Free
Released
Feb 26, 2020
Last updated
Jan 29, 2025
File size
1.26 GB
Content rating
12+
Version
1.1.35
Languages
English
View full Study Notes ABA report →

CITB Op/Spec HS&E test trajectory

JulAugSepOctNovDecJanFebMarAprMayJun

Study Notes ABA trajectory

JulAugSepOctNovDecJanFebMarAprMayJun

Related app pages

CITB Op/Spec HS&E test App Store page →Study Notes ABA App Store page →

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FAQ

Which makes more money, CITB Op/Spec HS&E test or Study Notes ABA? v
Study Notes ABA earns about $9.3K per month, while CITB Op/Spec HS&E test earns about $112. That is a 82.6× revenue gap (~$9.1K more per month for Study Notes ABA). Annual revenue: CITB Op/Spec HS&E test ≈ $1.3K/year, Study Notes ABA ≈ $111.0K/year. Estimates are derived from public App Store signals - grossing rank, scraped IAP tiers, ratings and category benchmarks.
Which has more downloads, CITB Op/Spec HS&E test or Study Notes ABA? v
Study Notes ABA leads with about 281K estimated downloads vs 600 for CITB Op/Spec HS&E test - a 468.7× gap. CITB Op/Spec HS&E test's App Store downloads are estimated from 12 ratings × the standard 1:75 ratio. Study Notes ABA's App Store downloads are estimated from 4K ratings.
Are CITB Op/Spec HS&E test and Study Notes ABA 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 CITB Op/Spec HS&E test and Study Notes ABA offer? v
CITB Op/Spec HS&E test: no IAP detected on the public listing. Study Notes ABA: IAP range 3 tiers detected. CITB Op/Spec HS&E test runs a "Paid app ($6.99)" monetization model; Study Notes ABA runs "Subscription (~$10.00/mo)". Scraped tier prices and detected subscription pricing drive the bulk of the per-app revenue estimate above.
Which has better ratings, CITB Op/Spec HS&E test or Study Notes ABA? v
CITB Op/Spec HS&E test edges ahead with ★ 5.0 vs ★ 4.9 (gap of 0.1 stars). Rating volume: CITB Op/Spec HS&E test 12 ratings, Study Notes ABA 4K ratings. Higher rating volume = stronger ASO signal even when star averages are close.
How accurate are these CITB Op/Spec HS&E test vs Study Notes ABA revenue estimates? v
Directional - typically within 2-3× of actual money earned for popular apps. The $112 for CITB Op/Spec HS&E test and $9.3K for Study Notes ABA 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 CITB Op/Spec HS&E test or Study Notes ABA 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.