Big binary clock vs KEEPER
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Big binary clock
This app displays the current time using binary code. Customize the appearance with different LED shapes, colors, and brightness levels. It offers a unique way to view time for tech enthusiasts.
- Binary time display
- Round LED option
- Square LED option
- Geek mode
- Customizable colors
- Adjustable brightness
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Big Binary clock is a engaging innovation that does exactly what you'd expect a Binary Clock to do - it tells the time in Binary format. Options: -Round LED's -Square LED's -Geek mode -Show time (on / off) -Auto lock (on / off) -time format (12 / 24 ) -All colors (swipe right, left for change colors) -Brightness (swipe up, down for change brightness) -Tap for hide help numbers
KEEPER
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This app tells you the time by voice every 10 minutes. There are only two buttons to use: start and stop, so it's easy to operate. It speaks for 4 hours. Ideal for running and training. ---- This app uses the iPhone/iPad notification function. Therefore, you will need to allow "sending notifications." Also, due to the nature of the app, it will not work properly in an environment where notifications do not arrive at the correct time. Please be careful if you are using focus mode or sleep mode. Please note that the app will not speak if the sound is on silent mode. To avoid any problems, it would be helpful if you could check the operation before using it in real life. This app does not have a reservation function. You must launch the app and register an alarm before using it. To customers using Apple Watch Voice notifications will not be available if the app is linked to an Apple Watch. If you want to hear the voice, please unlink the Apple Watch.
Screenshots
Verdict
The clearest difference is update cadence: KEEPER at every 4 days against Big binary clock's every 13 months. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Big binary clock costs $0.99 and KEEPER $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Big binary clock ships an update every 13 months, KEEPER every 4 days. The most recent releases landed on October 23, 2026 and October 21, 2026 respectively.
| Parameter | Big binary clock | KEEPER |
|---|---|---|
| Price | $0.99 | $0.99 |
| Rating | 4.6 (5 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 13 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.4 | 14.4 |
| Further details — not scored | ||
| Size | 2 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Alexander Rutkowskij | hideo nakamura |
In-app purchases
Big binary clock
No in-app purchases
KEEPER
No in-app purchases
