R vs GrooveCheckout
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
R
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R-Timer is a timer that plays the sound of a gong - designed for sports matches such as boxing. The sound of a gong is played at the beginning and end of a round. You can also make some wooden clappers make a sound just before the end of a round. New functionality has been added for providing notifications while the app or OS is in suspend mode. Enable the notification functionality to receive notifications through messages and gong sounds. The notification functionality settings can be found under the settings screen. Notification Functionality in Suspend Mode - The volume of the notifications is determined by the OS settings. - Putting the app in suspend mode and active mode repeatedly will make the end time slip. - Notification sounds may not be played successfully on low specification devices. - The number of configurable notifications is determined by the OS. Setting too many notifications will cause the notification functionality to stop working. - The app may behave differently between running in normal mode and in notification mode. - To stop notifications, please stop the app or open the app's settings screen. Functionality - Notifies you of the beginning and end of a round by playing the sound of a gong. - Find out the end time by looking at the settings screen - Added at the start of the round the voice, such as "Round One" (up to 1-30 round) - Add a voice such as "box" or "Fight" at the start of the round - Can give a signal just before the end of a round by playing some wooden clappers. - Can configure a different sound for the end of the last round. - As you might not be able to tap on the screen, you can start, pause, and restart the app by shaking the device. - Pause and restart the timer while it is running. - Configure it only once and next time you will be able to use it straight away. - Configurable volume Note: the volume in the app is determined by the volume set on your device, so if the volume is too low, please increase the volume on your device. Specifications Setting the Number of Rounds : 1 - 200 Time per round : 0[sec] - 100[min]59[sec] Preparation time : 0[sec] - 1000[sec] Signal before end of round : None - Time per round Resting time : 0[sec] - 1000[sec] Time display : 24[hour] or AM/PM Signal Start of round : Gong, Chinese gong, Bell End of round : Gong, Chinese gong, Bell End of last round : Gong, Chinese gong, Bell Signal before end of round : Wooden clappers, Chinese gong, Bell Note: the volume in the app is determined by the volume set on your device, so if the volume is too low, please increase the volume on your device.
GrooveCheckout
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Main Features - Check checkout routes - Record your play results - Review your history - Earn badges and achievements “Support the DJ” is a non-consumable in-app purchase. Purchasing it removes ads and helps support continued development of the app.
Screenshots
Verdict
The clearest difference is price: GrooveCheckout at Free against R's $0.99. GrooveCheckout also leads on update cadence (every 3 weeks vs every 3 months). R's advantage is ads (none vs shown) and iOS requirement (13.0 vs 18.0). On 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
GrooveCheckout is free to download; R costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
R ships an update every 3 months, GrooveCheckout every 3 weeks. The most recent releases landed on September 21, 2026 and September 18, 2026 respectively.
| Parameter | R | GrooveCheckout |
|---|---|---|
| Price | $0.99 | Free — better |
| Update frequency | Every 3 months | Every 3 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 17 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | Yoshiaki Onishi | Shinya Suzuki |
In-app purchases
R
No in-app purchases
GrooveCheckout
No in-app purchases









