Comparison

RoundBell vs CornerBell Timer

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

RoundBell

This interval timer app is designed for boxing, kickboxing, and martial arts training. It offers customizable round times, audio cues, and voice alerts to keep you on track during workouts. Save your preferred settings for quick access and enjoy a clear, large display visible from a distance.

Highlights
  • Customizable round and interval times
  • Gong and horn sound alerts
  • Audio countdowns and voice notifications
  • Save and load custom presets
  • Haptic feedback for notifications
  • Screen wake lock for continuous display
Features
Read full description

RoundBell is the ultimate interval timer for boxing, kickboxing, and martial arts training. FEATURES: - Round Timer: Customize round time, interval time, and total rounds - Gong & Horn: Round start/end gong sounds and warning horn before round ends - Countdown Beeps: Audio countdown for the final 3 seconds - Voice Alerts: "1 minute remaining" and "30 seconds remaining" voice notifications - 6 Built-in Presets: Beginner 1min, Boxing 3min, Kickboxing 2min, HIIT 30s, MMA 5min, and Tabata 20/10 - Custom Presets: Save favorite settings and switch instantly - Training History: Review completed sessions, streaks, and total rounds - Apple Health: Optionally save completed workouts - Haptic Feedback: Vibration notifications when sound isn't enough - Screen Wake Lock: Screen stays on during your workout - Japanese/English support PERFECT FOR: - Boxing and kickboxing training - Pad work and heavy bag sessions - Sparring round management - HIIT and interval training Clean dark theme design with large, easy-to-read timer display - visible from across the gym.

About

CornerBell Timer

Features
Read full description

English supported. CornerBell is a focused combat sports timer for boxing, MMA, kickboxing, Muay Thai, BJJ, circuit training, and HIIT. Start fast with built-in presets or create custom timers that match your gym, class, or personal workout flow. A large circular timer, clear ready-round-rest states, session history, and training statistics help you stay locked in during training. On iPad, CornerBell Pro unlocks Full Screen Gym Mode so the timer is easy to read from across the room. With AirPlay or an external display, you can show Gym Mode on a TV or second screen in supported environments, making it easier for a class or training room to follow the timer together. CornerBell Pro is a one-time purchase that unlocks unlimited custom timers, voice announcements, extra sounds, custom remaining-time alerts, and unlimited history. Most data stays on your device. No ads. No interruptions. Just training.

Screenshots

RoundBell3 screens
CornerBell Timer4 screens

Verdict

The call

The clearest difference is in-app purchases: RoundBell at none against CornerBell Timer's 1. On price, update cadence, ads and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. CornerBell Timer sells 1 one-off in-app purchase. RoundBell asks for nothing beyond the download.

UpkeepUpdate frequency

RoundBell ships an update every 5 days, CornerBell Timer every 6 days. The most recent releases landed on September 20, 2026 and September 15, 2026 respectively.

Scorecard1 real difference ยท 7 level
RoundBell versus CornerBell Timer: the parameters behind the verdict, then further details
ParameterRoundBellCornerBell Timer
PriceFreeFree
Positive reviews100.0% of reviewsโ€”
Update frequencyEvery 5 days โ€” betterEvery 6 days
AdsNoNo
In-app purchasesNo โ€” betterYes
MonetizationFreeโ€”
DevicesiPhoneiPhone, iPad โ€” better
Requires iOS17.017.0
Further details โ€” not scored
Size3 MB7 MB
Age rating4+4+
DeveloperStarcrown IncKojiro Fujisaka

In-app purchases

None

RoundBell

No in-app purchases

1 purchases

CornerBell Timer

One-time1
  • CornerBell Pro$5.99

Questions

Is RoundBell free?
RoundBell is free to download, with no in-app purchases.
Is CornerBell Timer free?
CornerBell Timer is free to download, with in-app purchases available.
Do RoundBell or CornerBell Timer have ads?
Neither RoundBell nor CornerBell Timer shows ads.
Which is updated more often, RoundBell or CornerBell Timer?
RoundBell ships an update every 5 days, and CornerBell Timer every 6 days. Most recently, RoundBell was updated on September 20, 2026 and CornerBell Timer on September 15, 2026.

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