Calc4Key
Calc4Key is #53 in Utilities Paid in India and charting in 3 of 24 countries we track.
Updated 27 Sep 2026 · rankings refresh through the day
DeveloperKhang Le
CategoryUtilities
Price99.00 INR
Released
Rating★ 4.8 (27)
Version1.0.1
Age rating4+
First seen by us
25 Sep 2026
25 Sep 2026Installs (est.)100k+ worldwide
Rating
4.8 ★
27 ratings
Measured
Best rank now
#53
Utilities PaidMeasured
Calc4Key on the App Store
App details
App ID
1585531759
Publisher
Khang Le
Minimum OS
iOS 11.0+
Content rating
4+
Languages
1
EN
Size
9 MB
Calc4Key downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Apple publishes no download counts. iPhone downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. Confidence is the chance the real number is within half to double ours.
Where Calc4Key's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Business model: Ad-led
How Calc4Key makes money: subscriptions, one-off purchases and ads.
Ads · 1 ad networks
Ads
/mo
of revenue
Where it ranks now
Every top chart it appears in across 24 countries.
| Country | Charts | Rank |
|---|---|---|
| India | UtilitiesPaid | #53 |
| United Arab Emirates | UtilitiesPaid | #61 |
 Saudi Arabia | UtilitiesPaid | #123 |
Apps near Calc4Key on the chart
Utilities Paid, around #53.
Ratings
App Store, worldwide.
Rating
4.8 ★
27 ratings
Measured
Ratings
27
Measured
About Calc4Key
Use calculator directly on keyboard anywhere, anytime. No switch apps, no copy and paste results anymore!
You must enable the keyboard under system settings, then select it in your keyboard, using the globe button.
1. Open the settings app
2. Go General > Keyboard > Keyboards > Add New Keyboard
3. Add Calc4Key
4. Start typing in any app
5. Press "globe" icon to switch to the Key4Cal keyboard
6. Enjoy
You must enable the keyboard under system settings, then select it in your keyboard, using the globe button.
1. Open the settings app
2. Go General > Keyboard > Keyboards > Add New Keyboard
3. Add Calc4Key
4. Start typing in any app
5. Press "globe" icon to switch to the Key4Cal keyboard
6. Enjoy
Latest updates
1.0.1
Fixed minor bug
