Comparison

Box Timer vs RoundBell

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

Head to head
About

Box Timer

Features
Read full description

FKN Timer is a training timer built around your own routine — from technical drills and conditioning to full rounds on the bag, pads or mat. Build a workout that matches how you train, start it in one tap, and keep your next move clear while you work. BUILD YOUR SESSION • Create and save workouts for boxing, Muay Thai, kickboxing, MMA, BJJ, wrestling and more • Combine warm-ups, drills, rounds, rest, cooldowns and repeat blocks • Browse exercises by discipline, set durations and repetitions, then arrange the session your way • Rename, duplicate and personalise workouts with your own icon and colour MAKE IT PERSONAL • Create custom exercises for your own drills and training methods • Add an icon, colour, description and optional photo or video link • Keep custom exercises alongside the built-in catalogue and reuse them in any workout STAY IN THE ROUND • See the current exercise, what comes next and the remaining workout time at a glance • Pause, resume, restart, skip forward or move back through a session • Use sound assistance and choose your preferred round bell • Keep an active workout visible on the Lock Screen, Live Activity and Dynamic Island • Control your session from Home Screen and Lock Screen widgets FINISH WITH THE NUMBERS • Review completed segments, total time and skipped time after each workout • Get an estimated calorie burn • Unlock and apply new timer styles as you train From shadowboxing and bag work to grappling drills and conditioning, FKN Timer gives your training a structure that is yours — then keeps you focused until the round is done.

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

Box Timer4 screens
RoundBell4 screens

Verdict

The call

The clearest difference is in-app purchases: Box Timer at none against RoundBell's 1. RoundBell's advantage is iOS requirement (18.0 vs 26.0). On price, update cadence, ads 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

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 9 days. The most recent releases landed on October 1, 2026 and September 30, 2026 respectively.

Scorecard2 real differences · 4 level
Box Timer versus RoundBell: the parameters behind the verdict, then further details
ParameterBox TimerRoundBell
PriceFreeFree
Update frequencyEvery 9 daysEvery 9 days
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhoneiPhone, iPad — better
Requires iOS26.018.0 — better
Further details — not scored
Size21 MB5 MB
Age rating4+4+
DeveloperSvyatoslav BoikoInnovaLabWorks

In-app purchases

None

Box Timer

No in-app purchases

1 purchases

RoundBell

One-time1
  • RoundBell Lifetime$49.99

Questions

Is Box Timer free?
Box Timer is free to download, with no in-app purchases.
Is RoundBell free?
RoundBell is free to download, with in-app purchases available.
Do Box Timer or RoundBell have ads?
Neither Box Timer nor RoundBell shows ads.
Which is updated more often, Box Timer or RoundBell?
Box Timer ships an update every 9 days, and RoundBell every 9 days. Most recently, Box Timer was updated on October 1, 2026 and RoundBell on September 30, 2026.

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