CITB Op/Spec HS&E test vs 4books: Audiobooks & Podcasts

CITB Op/Spec HS&E test

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

4books: Audiobooks & Podcasts

4books Srl
Google Play
$29.8K/mo
~$358.1K/yr · 801K installs
Revenue winner 4books: Audiobooks & Podcasts wins +26546% vs other
Installs winner 4books: Audiobooks & Podcasts wins +133349% vs other
MAU winner 4books: Audiobooks & Podcasts wins +92542% vs other
Rating winner CITB Op/Spec HS&E test wins +26% vs other

Why 4books: Audiobooks & Podcasts is winning

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

  1. 4books: Audiobooks & Podcasts earns roughly 266× more per month than CITB Op/Spec HS&E test - $29.8K vs $112.
  2. Subscription model. 4books: Audiobooks & Podcasts runs a $32.84/mo subscription that compounds; CITB Op/Spec HS&E test relies on one-shot IAP or ads.
  3. Bigger install base. 4books: Audiobooks & Podcasts has ~801K lifetime installs vs CITB Op/Spec HS&E test's ~600 - 1334.5× the funnel top.

→ Find more apps with this revenue gap · Full 4books: Audiobooks & Podcasts report

Side-by-side metrics

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

CITB Op/Spec HS&E test
vs
4books: Audiobooks & Podcasts
Monthly revenue (est.)?
$112
▶
$29.8K
Annual revenue (est.)
$1.3K
▶
$358.1K
Lifetime installs (est.)
600
▶
801K
Monthly active users (est.)?
72.6
▶
67K
App Store rating
5.00★
◀
3.97★
Total ratings
12
▶
5K
US grossing rank
-
=
-
Cheapest monthly sub
No sub
▶
$32.84
IAP tiers detected
0 tiers
=
0 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 →

4books: Audiobooks & Podcasts

4books Srl
Google Play
Category
Education
Price
Free
Released
Aug 8, 2018
Last updated
Apr 15, 2026
File size
-
Content rating
Everyone
Version
4.0.9
Languages
-
View full 4books: Audiobooks & Podcasts report →

CITB Op/Spec HS&E test trajectory

JunJulAugSepOctNovDecJanFebMarAprMay

4books: Audiobooks & Podcasts trajectory

JunJulAugSepOctNovDecJanFebMarAprMay

Related app pages

CITB Op/Spec HS&E test App Store page →4books: Audiobooks & Podcasts Play Store page →

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Compare another pair

FAQ

Which makes more money, CITB Op/Spec HS&E test or 4books: Audiobooks & Podcasts? v
4books: Audiobooks & Podcasts earns about $29.8K per month, while CITB Op/Spec HS&E test earns about $112. That is a 266.5× revenue gap (~$29.7K more per month for 4books: Audiobooks & Podcasts). Annual revenue: CITB Op/Spec HS&E test ≈ $1.3K/year, 4books: Audiobooks & Podcasts ≈ $358.1K/year. Estimates are derived from public App Store / Google Play signals - grossing rank, scraped IAP tiers, ratings and category benchmarks.
Which has more downloads, CITB Op/Spec HS&E test or 4books: Audiobooks & Podcasts? v
4books: Audiobooks & Podcasts leads with about 801K estimated downloads vs 600 for CITB Op/Spec HS&E test - a 1334.5× gap. CITB Op/Spec HS&E test's App Store downloads are estimated from 12 ratings × the standard 1:75 ratio. 4books: Audiobooks & Podcasts reports 500,000+ installs on Google Play.
Are CITB Op/Spec HS&E test and 4books: Audiobooks & Podcasts 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 CITB Op/Spec HS&E test and 4books: Audiobooks & Podcasts offer? v
CITB Op/Spec HS&E test: no IAP detected on the public listing. 4books: Audiobooks & Podcasts: IAP range $8.99 - $119.99 per item. CITB Op/Spec HS&E test runs a "Paid app ($6.99)" monetization model; 4books: Audiobooks & Podcasts runs "Subscription (~$32.84/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 4books: Audiobooks & Podcasts? v
CITB Op/Spec HS&E test edges ahead with ★ 5.0 vs ★ 4.0 (gap of 1.0 stars). Rating volume: CITB Op/Spec HS&E test 12 ratings, 4books: Audiobooks & Podcasts 11 ratings. Higher rating volume = stronger ASO signal even when star averages are close.
How accurate are these CITB Op/Spec HS&E test vs 4books: Audiobooks & Podcasts 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 $29.8K for 4books: Audiobooks & Podcasts 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 CITB Op/Spec HS&E test or 4books: Audiobooks & Podcasts 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.