1C Big Keyboard

11.3M installs
24.6K ratings
2.3M monthly active users
$500K+ monthly revenue est.
IAP 72% · Ad 28%
Install Trends
Weekly +1.6M
Trending
Monthly +4.8M
Trending

1C Big Keyboard Summary

1C Big Keyboard is a ad-supported, with in-app purchases Android app in Productivity by Mahjong Brain Puzzles. Released in Mar 2016 (10 years ago). It has about 11.3M+ installs and 24.6K ratings with a 4.16★ (good) average. Based on AppGoblin estimates, it reaches roughly 2.3M monthly active users and generates around $500K+ monthly revenue (72% IAP / 28% ads). Store metadata: updated Apr 10, 2026.

Recent activity: 1.6M installs this week (4.8M over 4 weeks) showing exceptional growth , and 3.00 new ratings this week View trends →

Data tracking: SDKs and third-party integrations were last analyzed on Apr 9, 2025.

Store info: Last updated on Google Play on Apr 10, 2026 .


4.16★

Ratings: 24.6K

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Screenshots

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App Description

Fat fingers on small screen? No problem for poor vision.

I am 58 and my vision is far from perfect. I have fingers on my hands - not matchsticks, so I designed this keyboard for myself. If you’re under 35 and have no problems with vision, please do not install. You will need it later. But maybe it will be a good lifehack for your parents now.


This ergonomic keyboard for Android allows using 100% of your phone’s screen for big keys making it indispensable on small screen devices and for fat fingers (100% is not an advertising slogan: it is literally 100%). Swipe up to switch into 100% display mode.
This big keyboard preserves your vision and reduces eye strain.
Big keyboard keys are easier to hit – less typos.
The layout of this large keyboard for Android is easy to learn – it’s a QWERTY keyboard smartly compressed into extra large keyboard, what makes it ideal for large hands.