Grammarly: AI Keyboard & Notes vs TeraBox: 1TB Cloud & AI Space

Grammarly: AI Keyboard & Notes

Grammarly, Inc
App Store
$3.94M/mo
~$47.34M/yr · 9.6M installs
VS

TeraBox: 1TB Cloud & AI Space

FLEXTECH INC.
App Store
$65.9K/mo
~$790.8K/yr · 643K installs
Revenue winner Grammarly: AI Keyboard & Notes wins +5886% vs other
Installs winner Grammarly: AI Keyboard & Notes wins +1395% vs other
MAU winner Grammarly: AI Keyboard & Notes wins +1435% vs other
Rating winner Grammarly: AI Keyboard & Notes wins +8% vs other

Why Grammarly: AI Keyboard & Notes is winning

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

  1. Grammarly: AI Keyboard & Notes earns roughly 60× more per month than TeraBox: 1TB Cloud & AI Space - $3.94M vs $65.9K.
  2. Premium pricing. Grammarly: AI Keyboard & Notes charges $29.99/mo vs TeraBox: 1TB Cloud & AI Space's $2.99/mo - higher ARPU per converted user.
  3. Bigger install base. Grammarly: AI Keyboard & Notes has ~9.6M lifetime installs vs TeraBox: 1TB Cloud & AI Space's ~643K - 15.0× the funnel top.
  4. Better app store reviews. Grammarly: AI Keyboard & Notes sits at 4.66★ vs 4.30★ - store algorithms reward higher-rated apps with more impressions.

→ Find more apps with this revenue gap · Full Grammarly: AI Keyboard & Notes report

Side-by-side metrics

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

Grammarly: AI Keyboard & Notes
vs
TeraBox: 1TB Cloud & AI Space
Monthly revenue (est.)?
$3.94M
◀
$65.9K
Annual revenue (est.)
$47.34M
◀
$790.8K
Lifetime installs (est.)
9.6M
◀
643K
Monthly active users (est.)?
6.0M
◀
390K
App Store rating
4.66★
◀
4.30★
Total ratings
214K
◀
18K
US grossing rank
-
=
-
Cheapest monthly sub
$29.99
◀
$2.99
IAP tiers detected
3 tiers
▶
9 tiers

Grammarly: AI Keyboard & Notes

Grammarly, Inc
App Store
Category
Productivity
Price
Free
Released
Nov 2, 2017
Last updated
May 6, 2026
File size
260.0 MB
Content rating
12+
Version
10.2.0
Languages
English, Spanish
View full Grammarly: AI Keyboard & Notes report →

TeraBox: 1TB Cloud & AI Space

FLEXTECH INC.
App Store
Category
Productivity
Price
Free
Released
Jun 22, 2020
Last updated
May 8, 2026
File size
521.2 MB
Content rating
4+
Version
4.16.6
Languages
Arabic, English, Hindi, Indonesian, Japanese, Korean +8 more
View full TeraBox: 1TB Cloud & AI Space report →

Grammarly: AI Keyboard & Notes trajectory

JunJulAugSepOctNovDecJanFebMarAprMay

TeraBox: 1TB Cloud & AI Space trajectory

JunJulAugSepOctNovDecJanFebMarAprMay

Related app pages

Grammarly: AI Keyboard & Notes App Store page →TeraBox: 1TB Cloud & AI Space App Store page →

Related comparisons

ChatGPT iOS vs Grammarly AI Keyboard Notes iOSGrammarly AI Keyboard Notes iOS vs Hotschedules Logbook AndroidGrammarly AI Keyboard Notes iOS vs Site Audit PRO iOSGrammarly AI Keyboard Notes iOS vs Google One AndroidGrammarly AI Keyboard Notes iOS vs Claude by Anthropic AndroidGrammarly AI Keyboard Notes iOS vs Microsoft Onedrive Android

Compare another pair

FAQ

Which makes more money, Grammarly: AI Keyboard & Notes or TeraBox: 1TB Cloud & AI Space? v
Grammarly: AI Keyboard & Notes earns about $3.94M per month, while TeraBox: 1TB Cloud & AI Space earns about $65.9K. That is a 59.9× revenue gap (~$3.88M more per month for Grammarly: AI Keyboard & Notes). Annual revenue: Grammarly: AI Keyboard & Notes ≈ $47.34M/year, TeraBox: 1TB Cloud & AI Space ≈ $790.8K/year. Estimates are derived from public App Store signals - grossing rank, scraped IAP tiers, ratings and category benchmarks.
Which has more downloads, Grammarly: AI Keyboard & Notes or TeraBox: 1TB Cloud & AI Space? v
Grammarly: AI Keyboard & Notes leads with about 9.6M estimated downloads vs 643K for TeraBox: 1TB Cloud & AI Space - a 15.0× gap. Grammarly: AI Keyboard & Notes's App Store downloads are estimated from 214K ratings × the standard 1:75 ratio. TeraBox: 1TB Cloud & AI Space's App Store downloads are estimated from 18K ratings.
Are Grammarly: AI Keyboard & Notes and TeraBox: 1TB Cloud & AI Space in the same App Store category and competing for the same money? v
Yes - both apps sit in the Productivity 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 Grammarly: AI Keyboard & Notes and TeraBox: 1TB Cloud & AI Space offer? v
Grammarly: AI Keyboard & Notes: IAP range 3 tiers detected. TeraBox: 1TB Cloud & AI Space: IAP range 9 tiers detected. Grammarly: AI Keyboard & Notes runs a "Subscription (~$11.67/mo, ai)" monetization model; TeraBox: 1TB Cloud & AI Space runs "Subscription (~$2.99/mo, ai)". Scraped tier prices and detected subscription pricing drive the bulk of the per-app revenue estimate above.
Which has better ratings, Grammarly: AI Keyboard & Notes or TeraBox: 1TB Cloud & AI Space? v
Grammarly: AI Keyboard & Notes edges ahead with ★ 4.7 vs ★ 4.3 (gap of 0.4 stars). Rating volume: Grammarly: AI Keyboard & Notes 214K ratings, TeraBox: 1TB Cloud & AI Space 18K ratings. Higher rating volume = stronger ASO signal even when star averages are close.
How accurate are these Grammarly: AI Keyboard & Notes vs TeraBox: 1TB Cloud & AI Space revenue estimates? v
Directional - typically within 2-3× of actual money earned for popular apps. The $3.94M for Grammarly: AI Keyboard & Notes and $65.9K for TeraBox: 1TB Cloud & AI Space are derived from App Store grossing rank, scraped IAP tiers, ratings volume and category benchmarks (Productivity) - 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 Grammarly: AI Keyboard & Notes or TeraBox: 1TB Cloud & AI Space 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.