Comparison

Interval Timer HIIT Workout vs Simple Boxing Timer USA

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

Head to head
About

Interval Timer HIIT Workout

This app provides customizable interval timers for HIIT, Tabata, and circuit training. It features AI voice cues from celebrity impersonations, music integration, and automatic syncing with Apple Health and Apple Watch for comprehensive workout tracking.

Highlights
  • Customizable HIIT & Tabata timers
  • AI voice cues from celebrity impersonations
  • Music integration without interruption
  • Convert social media workouts to follow-alongs
  • Syncs with Apple Health & Apple Watch
  • Save and organize custom workouts
  • On-screen exercise cues
Features
Read full description

The ultimate Interval Timer for your HIIT Workouts and Tabata training! Our app is the perfect Workout Timer, offering customizable work/rest periods for High Intensity Interval Training, Tabata, Running, Boxing and circuit training. Achieve peak interval performance with our EXCLUSIVE AI Voice Cues (feat. Arnold, Snoop & The Rock) that keep you motivated without interrupting your music! Why this timer? We added voice cues from AI versions of Arnold Schwarzenegger, Snoop Dogg, and The Rock. Because honestly, who wouldn't want Arnold yelling "PUMP UP THOSE MUSCLES" between sets when you're still wondering "WTF was I thinking doing this workout"? - TURN INSTAGRAM & TIKTOK WORKOUTS INTO FOLLOW-ALONGS. Share any workout post or reel to Peak Interval and it becomes a timed follow-along - exercise clips, reps, rounds and rest all set up for you. Finally, a use for all those workouts you saved "for later". - CUSTOMIZABLE WORKOUTS: Tailor your interval timer for any HIIT, Tabata, or circuit training session. - MUSIC INTEGRATION. Your music keeps playing while the cues run during your interval timer training - no interruptions. Who are we to judge what you listen to? - AI VOICE QUEUES. Get motivated by AI Arnold, Snoop Dogg, & The Rock for a truly fun workout timer experience. - LOCKED SCREEN MODE. Cues still play even when your phone is locked—because you shouldn't have to keep your screen on. You need to save that battery % for all that social media scrolling. - APPLE HEALTH & APPLE WATCH. Your workouts automatically sync to Apple Health with live heart rate monitoring and heart rate zones right on screen. Start a workout on your iPhone and your Watch joins in automatically. Your calories, duration, and heart rate — all tracked, all saved, zero effort. - SAVE AND ORGANIZE INTERVAL TIMER WORKOUTS. color-coded, named, and ready for quick access. Easiest thing about your workout is going to be starting the timer - the workout itself - not so much. - BIG CLEAR NUMBERS WITH COLOR CODED SCREENS - so you can see your time from a distance. Like across the gym. - REAL TIME EXERCISE ON-SCREEN CUES—enter your exercise names, and they'll show up on-screen during interval timer workouts and announce what's coming next during rest. At that point you may regret adding one extra round. - SHARE WORKOUTS WITH OTHERS – perfect for coaches with clients. Or that friend that needs to lay off donuts and do some serious sweating. Perfect for: - Interval timer training - High-Intensity Interval Training (HIIT timer training) - Tabata timer workouts - Circuit training & CrossFit - Boxing/MMA training - Strength training & cardio - Personal trainers & group fitness - Interval timer running - Forcing yourself to take a break while bindge watching Netflix (for real, you can put 40 minutes "work" and 5 minutes "rest"). Again, no judgement zone, you do what you want. Still reading? Just download. See the app for yourself.

About

Simple Boxing Timer USA

This app provides a customizable interval timer for boxing, kickboxing, MMA, and circuit training. Easily adjust rounds, break times, and warning cues with a one-tap start. Save presets and track your workout history with optional voice announcements and sound options.

Highlights
  • One-tap start
  • Customizable rounds and breaks
  • Save up to 3 presets free
  • Voice announcements
  • Workout history logging
  • Lock screen live activity
Features
Read full description

Simple Boxing Timer is a fast, no-friction round/rest interval timer built for boxing, kickboxing, MMA, and any circuit-style training that runs on rounds. No nested menus, no setup screens - adjust your rounds, round length, break length, and warning time right on the main screen, then start with one tap. Skip breaks entirely for back-to-back rounds, or dial in your rest exactly how you like it. Running workouts and every setting - sounds, voice announcements, themes - is completely free, with no ads. You can save up to 3 presets for free; an optional $0.99/year Premium subscription unlocks unlimited saved presets plus Past Workouts, your full history of completed sessions. Every workout you complete is logged automatically from day one, whether or not you've subscribed, so subscribing later reveals your entire history retroactively, not just what you log after subscribing. FEATURES - One-Tap Start - configure and go, no multi-screen setup. - Fully Custom Rounds - set rounds (1-20), round length, break length (or skip breaks entirely), and a warning cue up to half your round length. - End a Workout Early, Without Losing It - done after a few rounds? Save your progress as-is instead of starting over or losing it - only what you actually finished gets logged. - Save Up to 3 Presets Free, Unlimited with Premium - save your favorite configurations by name and reload them instantly. - Round Tags - label individual rounds ("Southpaw," "Just Kicks," or whatever you like) right when you save or edit a preset - see them on screen and hear them called out at the start of that round. - Past Workouts - every completed (or early-ended) workout is logged automatically, grouped by month and year, so you can relaunch or save any past session as a new preset. Viewing your history is part of an optional $0.99/year Premium subscription. - Voice Announcements - optional spoken round/break/warning callouts, so you never have to glance at your phone mid-round. - 8 Sound Options - pick your own bell, click, horn, or whistle sound for round starts, warnings, and workout completion. - Lock Screen & Dynamic Island - a live countdown Live Activity shows your current round and time remaining, even with the app closed. - Works Locked & Backgrounded - a background clock-tick ambience (volume adjustable - Low/Medium/High) plus a notification fallback mean your bell still rings if your phone locks or the app gets closed mid-workout. - Switch Audio Output Anytime - tap the AirPlay icon on the Workout or Active Workout screen to send round bells and announcements to your phone's speaker (or any other connected device) without digging through Settings. - Three Themes - Light, Dark, and a retro arcade-styled look. Simple Boxing Timer has no ads, ever. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://tm4747.github.io/apps-legal/simple-boxing-timer/

Screenshots

Interval Timer HIIT Workout4 screens
Simple Boxing Timer USA4 screens

Verdict

The call

The clearest difference is ads: Simple Boxing Timer USA at none against Interval Timer HIIT Workout's shown. Simple Boxing Timer USA also leads on review sentiment (100% vs 67%) and update cadence (every 3 days vs weekly). Interval Timer HIIT Workout's advantage is ratings volume (344 vs 1) and iOS requirement (18.0 vs 26.5). On price, rating, in-app purchases and monetization model 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. Interval Timer HIIT Workout sells 5 in-app purchases, starting at $1.99 per month and Simple Boxing Timer USA sells 1 in-app purchase, starting at $2.99 per year. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Simple Boxing Timer USA holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Interval Timer HIIT Workout has 344 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 67% of Interval Timer HIIT Workout's written reviews are positive against 100% of Simple Boxing Timer USA's.

UpkeepUpdate frequency

Interval Timer HIIT Workout ships an update weekly, Simple Boxing Timer USA every 3 days. The most recent releases landed on November 8, 2026 and October 31, 2026 respectively.

Scorecard5 real differences · 5 level
Interval Timer HIIT Workout versus Simple Boxing Timer USA: the parameters behind the verdict, then further details
ParameterInterval Timer HIIT WorkoutSimple Boxing Timer USA
PriceFreeFree
Rating4.8 (344 ratings)5.0 (1 ratings) — better
Positive reviews66.7% of reviews100.0% of reviews — better
Number of ratings344 — better1
Update frequencyWeeklyEvery 3 days — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPad
Requires iOS18.0 — better26.5
Further details — not scored
Size99 MB9 MB
Age rating4+4+
DeveloperRoli LLCTom Molinaro

Customer experience

Interval Timer HIIT Workout

All ratings343 ratings
Positive96.5%
Neutral1.7%
Negative1.7%
Written reviews18 reviews
Positive66.7%
Neutral11.1%
Negative22.2%

Simple Boxing Timer USA

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

5 purchases

Interval Timer HIIT Workout

Subscriptions4
  • Monthly Subscription7 Days trial$1.991 Month
  • Monthly Subscription$2.991 Month
  • Yearly Subscription1 Year trial$29.991 Year
Show 1 more
  • Yearly Subscription7 Days trial$29.991 Year
One-time1
  • One Time Purchase$19.99
1 purchases

Simple Boxing Timer USA

Subscriptions1
  • Past Workouts$2.991 Year

Questions

Is Interval Timer HIIT Workout free?
Interval Timer HIIT Workout is free to download, with in-app purchases available.
Is Simple Boxing Timer USA free?
Simple Boxing Timer USA is free to download, with in-app purchases available.
Which has better reviews, Interval Timer HIIT Workout or Simple Boxing Timer USA?
Simple Boxing Timer USA is rated higher. Interval Timer HIIT Workout averages 4.8 out of 5 from 344 ratings, while Simple Boxing Timer USA averages 5.0 from 1 ratings.
Do Interval Timer HIIT Workout or Simple Boxing Timer USA have ads?
Interval Timer HIIT Workout shows ads; Simple Boxing Timer USA does not.
Which is updated more often, Interval Timer HIIT Workout or Simple Boxing Timer USA?
Interval Timer HIIT Workout ships an update weekly, and Simple Boxing Timer USA every 3 days. Most recently, Interval Timer HIIT Workout was updated on November 8, 2026 and Simple Boxing Timer USA on October 31, 2026.

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