iEstims vs Merlin Bird ID by Cornell Lab
iEstims
Antoine Chauviere
App Store
$39/mo
~$468/yr · 400 installs
VS
Merlin Bird ID by Cornell Lab
Cornell University
App Store
$0/mo
~$0/yr · 16.3M installs
Revenue winner
iEstims wins
+3900% vs other
Installs winner
Merlin Bird ID by Cornell Lab wins
+4067450% vs other
MAU winner
Merlin Bird ID by Cornell Lab wins
+3025350% vs other
Rating winner
iEstims wins
+3% vs other
Why iEstims is winning
Top 3 reasons - backed by the public App Store / Play Store numbers.
- iEstims earns roughly 39× more per month than Merlin Bird ID by Cornell Lab - $39 vs $0.
- Subscription model. iEstims runs a $24.99/mo subscription that compounds; Merlin Bird ID by Cornell Lab relies on one-shot IAP or ads.
- More monetization surfaces. iEstims runs 6 IAP tiers vs 0 - more chances to convert users at the right price.
→ Find more apps with this revenue gap · Full iEstims report
Side-by-side metrics
Bars scale to whichever app is bigger on that row. Green = winner.
iEstims
vs
Merlin Bird ID by Cornell Lab
Monthly revenue (est.)?
$39
◀
$0
Annual revenue (est.)
$468
◀
$0
Lifetime installs (est.)
400
▶
16.3M
Monthly active users (est.)?
48.4
▶
1.5M
App Store rating
5.00★
◀
4.86★
Total ratings
1
▶
108K
US grossing rank
-
=
-
Cheapest monthly sub
$24.99
◀
No sub
IAP tiers detected
6 tiers
◀
0 tiers
- Category
- Reference
- Price
- Free
- Released
- Apr 23, 2023
- Last updated
- Jun 11, 2026
- File size
- 378.7 MB
- Content rating
- 4+
- Version
- 2.8.4
- Languages
- English
- Category
- Reference
- Price
- Free
- Released
- Dec 11, 2013
- Last updated
- May 23, 2026
- File size
- 354.4 MB
- Content rating
- 4+
- Version
- 3.9
- Languages
- AF, Arabic, Danish, Dutch, English, French +25 more
iEstims trajectory
Merlin Bird ID by Cornell Lab trajectory
FAQ
Which makes more money, iEstims or Merlin Bird ID by Cornell Lab? v
iEstims earns about $39 per month, while Merlin Bird ID by Cornell Lab earns about $0. That is a ∞× revenue gap (~$39 more per month for iEstims). Annual revenue: iEstims ≈ $468/year, Merlin Bird ID by Cornell Lab ≈ $0/year. Estimates are derived from public App Store signals - grossing rank, scraped IAP tiers, ratings and category benchmarks.
Which has more downloads, iEstims or Merlin Bird ID by Cornell Lab? v
Merlin Bird ID by Cornell Lab leads with about 16.3M estimated downloads vs 400 for iEstims - a 40675.5× gap. iEstims's App Store downloads are estimated from 1 ratings × the standard 1:75 ratio. Merlin Bird ID by Cornell Lab's App Store downloads are estimated from 108K ratings.
Are iEstims and Merlin Bird ID by Cornell Lab in the same App Store category and competing for the same money? v
Yes - both apps sit in the Reference 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 iEstims and Merlin Bird ID by Cornell Lab offer? v
iEstims: IAP range 6 tiers detected. Merlin Bird ID by Cornell Lab: no IAP detected on the public listing. iEstims runs a "Subscription (~$24.99/mo)" monetization model; Merlin Bird ID by Cornell Lab runs "No App Store revenue (monetizes off-store)". Scraped tier prices and detected subscription pricing drive the bulk of the per-app revenue estimate above.
Which has better ratings, iEstims or Merlin Bird ID by Cornell Lab? v
iEstims edges ahead with ★ 5.0 vs ★ 4.9 (gap of 0.1 stars). Rating volume: iEstims 1 ratings, Merlin Bird ID by Cornell Lab 108K ratings. Higher rating volume = stronger ASO signal even when star averages are close.
How accurate are these iEstims vs Merlin Bird ID by Cornell Lab revenue estimates? v
Directional - typically within 2-3× of actual money earned for popular apps. The $39 for iEstims and $0 for Merlin Bird ID by Cornell Lab are derived from App Store grossing rank, scraped IAP tiers, ratings volume and category benchmarks (Reference) - 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 iEstims or Merlin Bird ID by Cornell Lab 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.