big O'Clock
Not in any tracked top chart right now.
Updated 23 Oct 2026 · rankings refresh through the day
Developerjohn bogaert
CategoryLifestyle
Price0.99 USD
Released
Rating★ 4.6 (11)
Version1.6
Age rating4+
First seen by us
2 Oct 2026
2 Oct 2026Installs (est.)1k+ worldwide
Rating
4.6 ★
11 ratings
Measured
big O'Clock on the App Store
App details
App ID
1524090504
Publisher
john bogaert
On the store since
Jul 2020
6 years on the store
Minimum OS
iOS 16.0+
iPhone 8 and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
3
EN FR DE
Size
33 MB
Also listed in
Utilities
big O'Clock 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 big O'Clock'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.
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Not charting right now. | ||
Ratings
App Store, worldwide.
Rating
4.6 ★
11 ratings
Measured
Ratings
11
Measured
What users say about big O'Clock
From recent reviews.
About big O'Clock
Big O'Clock is a clock, timer or stop watch with big digits in full screen with high quality images, sounds and vibrations
Beautiful night stand or working clock
Beautiful night stand or working clock
Latest updates
1.6
-the stopwatch displays the overrun in hours
-you can send tips to encourage the dev team