Comparison

CornerBell Timer vs RoundBell

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

Head to head
About

CornerBell Timer

Features
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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.

About

RoundBell

Features
Read full description

RoundBell is a gym-grade round and interval timer for boxing, HIIT, and everything with a work and rest rhythm. Big numbers, loud bells, and a warning before every round ends, so your hands stay up and your eyes stay off the clock. Start in seconds with a real built-in library: - Classic boxing, 12 rounds of 3:00 work and 1:00 rest, plus amateur, speed, and heavy-bag variants - HIIT intervals like 40/20 and 30/30 - Tabata, the classic 20/10 by eight, and a double round - EMOM, every minute on the minute - Bodyweight and core circuits, plus mobility and cooldown flows Build your own timer: - Set prepare, rounds, work and rest phases, cooldown, and the bell - Add as many phases per round as you want for real circuits - Pick from six bells and a configurable end-of-round warning During a workout: - A full-bleed display that scales up on iPad and Mac - Bell at every change, a warning beep before work ends, and a 3 2 1 countdown - Haptics and a keep-awake screen, so it works from across the room Keep going and it adds up: - Every session is logged with your day streak, totals, and a weekly-minutes chart - Personal records for best rounds and longest session - A boxing combo of the day with a coaching tip Free and Lifetime: - Free includes the whole built-in library, the full timer, every cue, the log, and up to three saved custom timers - Lifetime is a one-time $9.99 USD purchase that lifts the cap to unlimited custom timers and unlocks training-log exports to CSV and PDF Your custom timers and workout history sync across your iPhone, iPad, and Mac with your private iCloud. No account to create, no ads, and no tracking.

Screenshots

CornerBell Timer4 screens
RoundBell4 screens

Verdict

The call

CornerBell Timer and RoundBell are too close to call on the numbers: across 6 compared parameters โ€” price, update cadence, ads and in-app purchases among them โ€” neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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 and RoundBell sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

CornerBell Timer ships an update every 6 days, RoundBell every 9 days. The most recent releases landed on October 2, 2026 and September 30, 2026 respectively.

ScorecardNo meaningful differences
CornerBell Timer versus RoundBell: the parameters behind the verdict, then further details
ParameterCornerBell TimerRoundBell
PriceFreeFree
Update frequencyEvery 6 days โ€” betterEvery 9 days
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.0 โ€” better18.0
Further details โ€” not scored
Size7 MB5 MB
Age rating4+4+
DeveloperKojiro FujisakaInnovaLabWorks

In-app purchases

1 purchases

CornerBell Timer

One-time1
  • CornerBell Pro$5.99
1 purchases

RoundBell

One-time1
  • RoundBell Lifetime$49.99

Questions

Is CornerBell Timer free?
CornerBell Timer is free to download, with in-app purchases available.
Is RoundBell free?
RoundBell is free to download, with in-app purchases available.
Do CornerBell Timer or RoundBell have ads?
Neither CornerBell Timer nor RoundBell shows ads.
Which is updated more often, CornerBell Timer or RoundBell?
CornerBell Timer ships an update every 6 days, and RoundBell every 9 days. Most recently, CornerBell Timer was updated on October 2, 2026 and RoundBell on September 30, 2026.

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