Comparison

HIIT Workouts vs Sparring Clock

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

Head to head
About

HIIT Workouts

Features
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HIIT Workouts is a no-fuss high-intensity interval timer built for Apple Watch — with an iPhone companion that's a full partner, not just a second screen. Set your total session length and work/rest splits, then put your wrist down and go: pronounced haptic cues call every transition so you never have to look at the screen. ON YOUR WATCH - Wall-clock-accurate interval timing, anchored so cues never drift - Strong, escalating haptics: a build-up countdown into each work and rest, a bigger jolt for the final interval, and a celebratory finish - Live heart rate and a workout saved to the Health app - Keeps running wrist-down for the whole session - A watch-face complication to launch straight into the app ON YOUR IPHONE - Start, pause, resume, or end a session from your phone — the watch follows in real time and records the real workout - Live countdown in big type: ring, phase, and set count, anchored to the same clock so both devices stay in lockstep - Live heart rate and active calories during the workout, with an average heart rate and calorie summary at the finish - Workout history straight from Health: duration, calories, and average heart rate for every HIIT session - Works with HIIT workouts logged by any app, not just this one START ON EITHER DEVICE Begin on your watch or your phone — whichever you reach first. Starting on one wakes and syncs the other, and if a device is closed or crashes mid-session, you can rejoin the workout already in progress. Designed watch-first for intervals, circuits, Tabata, and any work/rest routine.

About

Sparring Clock

Features
Read full description

Sparring Clock is a boxing and interval round timer built for real training — heavy bag, pads, shadow boxing, sparring, HIIT or circuits. Set your rounds, hit start, and never look at your phone again: the bell, the warning knock and the vibration tell you everything. And when you are the one running the room, Corner Mode turns the same timer into the tool you stand behind. CORNER MODE — RUN THE WHOLE CLASS • Corner board: a black board with a thick phase-coloured border, sized to be read from the far wall • Coach pad: two foot-sized tiles across the bottom of a running timer. Left tile whistles, right tile beeps — mid-round, without touching the clock • Every tile keeps its own tally, with an optional target, so calling thirty means you know you called thirty • Hold a tile and the cue repeats on the interval you set — a metronome you drive by hand • Coach actions: hold the round, add thirty seconds, cut it short, or run it again — the four things you do when a class is not going to plan • Station rotation: split every work block into equal stations and call the change • Class profiles: save a whole set-up — quiet class, kids, pro — and switch between them in one tap • Bluetooth remote: pair any clicker or foot pedal and drive the session from across the mat • Lock the controls so a stray hand cannot end the round WORKS THE WAY A GYM TIMER SHOULD • Loud, clean bell to open and close every round • Wooden double-knock warning before the round ends, so you know when to empty the tank • "Get Ready" countdown before the first bell — you always have time to put your gloves on • Countdown digits sized to be read from across the room • The screen turns deep orange in the last 10 seconds • Foot zone: tap the top of the screen to pause or resume, hold it to reset — it works with gloves on, or with a foot when the phone is on the floor PACE AND PROGRESSION • Pace metronome: steady ticks through every work round. Set strikes or jumps per minute, accent the downbeat, and let the tempo climb round by round • Auto progression: finish a workout and it gets a little harder next time — work grows toward your target, rest shrinks toward your floor • Periodic interval beep on its own period, for pace or drill changes EVERY SETTING IS YOURS • Round and rest durations, round count, sets, and rest between sets • Optional warm-up and cool-down, and an adjustable end-of-round warning lead • Round cue: boxing bell, gong, whistle or a soft chime, struck one to three times • Warning cue: wooden knock or beep, one to five hits • Ticking countdown over the last seconds, on or off • Vibration cues with light / medium / heavy intensity, adjustable per event • Master and per-cue volume, and a choice of how background music behaves • Optional voice announcements — off by default, no talking unless you want it • Settings are five plain tabs: Sound, Pace, Screen, Coach, General READY-MADE PRESETS Boxing (Pro), Boxing (Amateur), MMA, Muay Thai, Kickboxing, Tabata, EMOM, HIIT and Quick Spar — start in one tap, or build your own workouts and reuse them. BUILT FOR THE MIDDLE OF A WORKOUT • Screen stays awake, and can raise its brightness, for the whole session • The bell still rings with the screen locked or while you're in another app • Cue, Hold and Cut sit on the ongoing notification, so you can run the round from the lock screen • Progress as a ring or a bar, counting down or up, in four text sizes • Dark theme by default, plus pure black and light themes • Training history with your streak, so you can see what you actually did • English and Turkish NO ACCOUNT, NO ADS, NO INTERNET Sparring Clock has no sign-up, no ads, no tracking and no analytics. It never connects to the internet — your workouts and history stay on your device and nothing is ever uploaded. It works exactly the same in a basement gym with no signal. Free. Just a timer that does its job.

Screenshots

HIIT Workouts4 screens
Sparring Clock4 screens

Verdict

The call

The clearest difference is update cadence: Sparring Clock at every 3 days against HIIT Workouts's weekly. Sparring Clock also leads on iOS requirement (15.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

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

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

HIIT Workouts ships an update weekly, Sparring Clock every 3 days. The most recent releases landed on October 5, 2026 and October 14, 2026 respectively.

Scorecard2 real differences Ā· 4 level
HIIT Workouts versus Sparring Clock: the parameters behind the verdict, then further details
ParameterHIIT WorkoutsSparring Clock
PriceFreeFree
Update frequencyWeeklyEvery 3 days — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, Apple WatchiPhone, iPad, iPod — better
Requires iOS26.015.0 — better
Further details — not scored
Size2 MB23 MB
Age rating4+4+
DeveloperRouslan ZenetlStk Bayramolu

In-app purchases

None

HIIT Workouts

No in-app purchases

None

Sparring Clock

No in-app purchases

Questions

Is HIIT Workouts free?
HIIT Workouts is free to download, with no in-app purchases.
Is Sparring Clock free?
Sparring Clock is free to download, with no in-app purchases.
Do HIIT Workouts or Sparring Clock have ads?
Neither HIIT Workouts nor Sparring Clock shows ads.
Which is updated more often, HIIT Workouts or Sparring Clock?
HIIT Workouts ships an update weekly, and Sparring Clock every 3 days. Most recently, HIIT Workouts was updated on October 5, 2026 and Sparring Clock on October 14, 2026.

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