CDL Prep vs CITB Op/Spec HS&E test
CDL Prep
Jeffrey Diaz
App Store
$0/mo
~$0/yr · 507K installs
VS
CITB Op/Spec HS&E test
CITB
App Store
$112/mo
~$1.3K/yr · 600 installs
Revenue winner
CITB Op/Spec HS&E test wins
+11200% vs other
Installs winner
CDL Prep wins
+84447% vs other
MAU winner
CDL Prep wins
+82350% vs other
Rating winner
CITB Op/Spec HS&E test wins
+7% vs other
Why CITB Op/Spec HS&E test is winning
Top 2 reasons - backed by the public App Store / Play Store numbers.
- CITB Op/Spec HS&E test earns roughly 112× more per month than CDL Prep - $112 vs $0.
- Better app store reviews. CITB Op/Spec HS&E test sits at 5.00★ vs 4.68★ - store algorithms reward higher-rated apps with more impressions.
→ Find more apps with this revenue gap · Full CITB Op/Spec HS&E test report
Side-by-side metrics
Bars scale to whichever app is bigger on that row. Green = winner.
CDL Prep
vs
CITB Op/Spec HS&E test
Monthly revenue (est.)?
$0
▶
$112
Annual revenue (est.)
$0
▶
$1.3K
Lifetime installs (est.)
507K
◀
600
Monthly active users (est.)?
60K
◀
72.6
App Store rating
4.68★
▶
5.00★
Total ratings
6K
◀
12
US grossing rank
-
=
-
Cheapest monthly sub
No sub
=
No sub
IAP tiers detected
0 tiers
=
0 tiers
- Category
- Education
- Price
- Free
- Released
- Apr 14, 2016
- Last updated
- Feb 14, 2026
- File size
- 6.4 MB
- Content rating
- 4+
- Version
- 9.10
- Languages
- English
- 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
CDL Prep trajectory
CITB Op/Spec HS&E test trajectory
FAQ
Which makes more money, CDL Prep or CITB Op/Spec HS&E test? v
CITB Op/Spec HS&E test earns about $112 per month, while CDL Prep earns about $0. That is a ∞× revenue gap (~$112 more per month for CITB Op/Spec HS&E test). Annual revenue: CDL Prep ≈ $0/year, CITB Op/Spec HS&E test ≈ $1.3K/year. Estimates are derived from public App Store signals - grossing rank, scraped IAP tiers, ratings and category benchmarks.
Which has more downloads, CDL Prep or CITB Op/Spec HS&E test? v
CDL Prep leads with about 507K estimated downloads vs 600 for CITB Op/Spec HS&E test - a 845.5× gap. CDL Prep's App Store downloads are estimated from 6K ratings × the standard 1:75 ratio. CITB Op/Spec HS&E test's App Store downloads are estimated from 12 ratings.
Are CDL Prep and CITB Op/Spec HS&E test 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.
Do CDL Prep and CITB Op/Spec HS&E test have in-app purchases? v
CDL Prep does not appear to offer in-app purchases on its public listing. CITB Op/Spec HS&E test does not appear to offer in-app purchases. Monetization model: CDL Prep runs "No App Store revenue (monetizes off-store)", CITB Op/Spec HS&E test runs "Paid app ($6.99)".
Which has better ratings, CDL Prep or CITB Op/Spec HS&E test? v
CITB Op/Spec HS&E test edges ahead with ★ 5.0 vs ★ 4.7 (gap of 0.3 stars). Rating volume: CDL Prep 6K ratings, CITB Op/Spec HS&E test 12 ratings. Higher rating volume = stronger ASO signal even when star averages are close.
How accurate are these CDL Prep vs CITB Op/Spec HS&E test revenue estimates? v
Directional - typically within 2-3× of actual money earned for popular apps. The $0 for CDL Prep and $112 for CITB Op/Spec HS&E test 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 CDL Prep or CITB Op/Spec HS&E test 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.