Caller ID - Spam Call Blocker vs Second Phone Number ™ 2nd Line
Caller ID - Spam Call Blocker
Apero Technologies Group
App Store
$250/mo
~$3.0K/yr · 9K installs
VS
Second Phone Number ™ 2nd Line
Pretty Boa Media Ltd
App Store
$24.1K/mo
~$288.9K/yr · 399K installs
Revenue winner
Second Phone Number ™ 2nd Line wins
+9531% vs other
Installs winner
Second Phone Number ™ 2nd Line wins
+4285% vs other
MAU winner
Second Phone Number ™ 2nd Line wins
+4400% vs other
Rating winner
Second Phone Number ™ 2nd Line wins
+9% vs other
Why Second Phone Number ™ 2nd Line is winning
Top 4 reasons - backed by the public App Store / Play Store numbers.
- Second Phone Number ™ 2nd Line earns roughly 96× more per month than Caller ID - Spam Call Blocker - $24.1K vs $250.
- Premium pricing. Second Phone Number ™ 2nd Line charges $15.99/mo vs Caller ID - Spam Call Blocker's $0.99/mo - higher ARPU per converted user.
- Bigger install base. Second Phone Number ™ 2nd Line has ~399K lifetime installs vs Caller ID - Spam Call Blocker's ~9K - 43.9× the funnel top.
- Better app store reviews. Second Phone Number ™ 2nd Line sits at 4.54★ vs 4.17★ - store algorithms reward higher-rated apps with more impressions.
→ Find more apps with this revenue gap · Full Second Phone Number ™ 2nd Line report
Side-by-side metrics
Bars scale to whichever app is bigger on that row. Green = winner.
Caller ID - Spam Call Blocker
vs
Second Phone Number ™ 2nd Line
Monthly revenue (est.)?
$250
▶
$24.1K
Annual revenue (est.)
$3.0K
▶
$288.9K
Lifetime installs (est.)
9K
▶
399K
Monthly active users (est.)?
1K
▶
47K
App Store rating
4.17★
▶
4.54★
Total ratings
182
▶
5K
US grossing rank
-
=
-
Cheapest monthly sub
$0.99
▶
$15.99
IAP tiers detected
10 tiers
=
10 tiers
- Category
- Business
- Price
- Free
- Released
- May 7, 2024
- Last updated
- Oct 8, 2025
- File size
- 91.9 MB
- Content rating
- 4+
- Version
- 1.3.6
- Languages
- Arabic, English, French, German, Hindi, Italian +5 more
- Category
- Business
- Price
- Free
- Released
- Dec 10, 2019
- Last updated
- Jul 18, 2025
- File size
- 60.9 MB
- Content rating
- 4+
- Version
- 3.6.00
- Languages
- English
Caller ID - Spam Call Blocker trajectory
Second Phone Number ™ 2nd Line trajectory
FAQ
Which makes more money, Caller ID - Spam Call Blocker or Second Phone Number ™ 2nd Line? v
Second Phone Number ™ 2nd Line earns about $24.1K per month, while Caller ID - Spam Call Blocker earns about $250. That is a 96.3× revenue gap (~$23.8K more per month for Second Phone Number ™ 2nd Line). Annual revenue: Caller ID - Spam Call Blocker ≈ $3.0K/year, Second Phone Number ™ 2nd Line ≈ $288.9K/year. Estimates are derived from public App Store signals - grossing rank, scraped IAP tiers, ratings and category benchmarks.
Which has more downloads, Caller ID - Spam Call Blocker or Second Phone Number ™ 2nd Line? v
Second Phone Number ™ 2nd Line leads with about 399K estimated downloads vs 9K for Caller ID - Spam Call Blocker - a 43.9× gap. Caller ID - Spam Call Blocker's App Store downloads are estimated from 182 ratings × the standard 1:75 ratio. Second Phone Number ™ 2nd Line's App Store downloads are estimated from 5K ratings.
Are Caller ID - Spam Call Blocker and Second Phone Number ™ 2nd Line in the same App Store category and competing for the same money? v
Yes - both apps sit in the Business 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 Caller ID - Spam Call Blocker and Second Phone Number ™ 2nd Line offer? v
Caller ID - Spam Call Blocker: IAP range 10 tiers detected. Second Phone Number ™ 2nd Line: IAP range 10 tiers detected. Caller ID - Spam Call Blocker runs a "Subscription (~$7.49/mo)" monetization model; Second Phone Number ™ 2nd Line runs "Subscription (~$15.99/mo)". Scraped tier prices and detected subscription pricing drive the bulk of the per-app revenue estimate above.
Which has better ratings, Caller ID - Spam Call Blocker or Second Phone Number ™ 2nd Line? v
Second Phone Number ™ 2nd Line edges ahead with ★ 4.5 vs ★ 4.2 (gap of 0.4 stars). Rating volume: Caller ID - Spam Call Blocker 182 ratings, Second Phone Number ™ 2nd Line 5K ratings. Higher rating volume = stronger ASO signal even when star averages are close.
How accurate are these Caller ID - Spam Call Blocker vs Second Phone Number ™ 2nd Line revenue estimates? v
Directional - typically within 2-3× of actual money earned for popular apps. The $250 for Caller ID - Spam Call Blocker and $24.1K for Second Phone Number ™ 2nd Line are derived from App Store grossing rank, scraped IAP tiers, ratings volume and category benchmarks (Business) - 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 Caller ID - Spam Call Blocker or Second Phone Number ™ 2nd Line 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.