ChatGPT vs Notan

ChatGPT

OpenAI OpCo, LLC
App Store
$177.06M/mo
~$2.12B/yr · 1.2B installs
VS

Notan

Tien Do Nam
App Store
$218/mo
~$2.6K/yr · 3K installs
Revenue winner ChatGPT wins +81219130% vs other
Installs winner ChatGPT wins +45282919% vs other
MAU winner ChatGPT wins +193517075% vs other
Rating winner ChatGPT wins +5% vs other

Why ChatGPT is winning

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

  1. ChatGPT earns roughly 812192× more per month than Notan - $177.06M vs $218.
  2. Aggressive pricing. ChatGPT undercuts at $8.33/mo vs $21.68/mo - converts a higher % of free users.
  3. Bigger install base. ChatGPT has ~1.2B lifetime installs vs Notan's ~3K - 452830.2× the funnel top.
  4. More monetization surfaces. ChatGPT runs 5 IAP tiers vs 1 - more chances to convert users at the right price.

Find more apps with this revenue gap · Full ChatGPT report

Side-by-side metrics

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

ChatGPT
vs
Notan
Monthly revenue (est.)?
$177.06M
$218
Annual revenue (est.)
$2.12B
$2.6K
Lifetime installs (est.)
1.2B
3K
Monthly active users (est.)?
600.0M
310.05
App Store rating
4.83★
4.58★
Total ratings
8.3M
53
US grossing rank
#1
-
Cheapest monthly sub
$8.33
$21.68
IAP tiers detected
5 tiers
1 tiers

ChatGPT

OpenAI OpCo, LLC
App Store
Category
Productivity
Price
Free
Released
May 18, 2023
Last updated
Jun 23, 2026
File size
240.3 MB
Content rating
12+
Version
1.2026.167
Languages
SQ, AM, Arabic, HY, BN, BS +54 more
View full ChatGPT report →

Notan

Tien Do Nam
App Store
Category
Utilities
Price
Free
Released
Jan 4, 2020
Last updated
Jun 24, 2026
File size
45.7 MB
Content rating
4+
Version
2.19.7
Languages
English
View full Notan report →

ChatGPT trajectory

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Notan trajectory

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FAQ

Which makes more money, ChatGPT or Notan? v
ChatGPT earns about $177.06M per month, while Notan earns about $218. That is a 812192.3× revenue gap (~$177.06M more per month for ChatGPT). Annual revenue: ChatGPT ≈ $2.12B/year, Notan ≈ $2.6K/year. Estimates are derived from public App Store signals - grossing rank, scraped IAP tiers, ratings and category benchmarks.
Which has more downloads, ChatGPT or Notan? v
ChatGPT leads with about 1.2B estimated downloads vs 3K for Notan - a 452830.2× gap. ChatGPT's App Store downloads are estimated from 8.3M ratings × the standard 1:75 ratio. Notan's App Store downloads are estimated from 53 ratings.
Are ChatGPT and Notan in the same App Store category and competing for the same money? v
No - ChatGPT is in Productivity and Notan is in Utilities. They share screen-time attention but earn money in different niches: ChatGPT from productivity monetization patterns, Notan from utilities.
What in-app purchases and subscription pricing do ChatGPT and Notan offer? v
ChatGPT: IAP range 5 tiers detected. Notan: IAP range 1 tiers detected. ChatGPT runs a "Subscription (~$8.33/mo, ai) · calibrated by US grossing rank #1" monetization model; Notan runs "Subscription (~$21.68/mo)". Scraped tier prices and detected subscription pricing drive the bulk of the per-app revenue estimate above.
Which has better ratings, ChatGPT or Notan? v
ChatGPT edges ahead with ★ 4.8 vs ★ 4.6 (gap of 0.2 stars). Rating volume: ChatGPT 8.3M ratings, Notan 53 ratings. Higher rating volume = stronger ASO signal even when star averages are close.
How accurate are these ChatGPT vs Notan revenue estimates? v
Directional - typically within 2-3× of actual money earned for popular apps. The $177.06M for ChatGPT and $218 for Notan are derived from App Store grossing rank, scraped IAP tiers, ratings volume and category benchmarks (Productivity / Utilities) - 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 ChatGPT or Notan 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.