Comparison

MuscleTrainingTimer vs HIIT Timer

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

Head to head
About

MuscleTrainingTimer

Features
Read full description

The all-in-one interval timer for HIIT, Tabata, circuit & strength training β€” designed by a Physical Therapist. Build multi-exercise routines, keep your own music playing, and stay on pace with 50+ sound cues, Live Activities, and 26 customizable themes. β–  WORKOUT BUILDER - Combine multiple exercises into one routine with rounds and rest between blocks - Ladder workouts like 21-15-9, plus reps-based or time-based intervals - Cooldown periods and per-block notes for weight, distance or target reps - Start instantly with ready-made presets β–  SOUND & MUSIC - 50+ sound effects: per-second ticks, interval signals, countdown & finish cues - Layers over your music β€” plays on top without stopping Apple Music, Spotify or podcasts - Turn individual sounds on/off; spoken cues announce "Work", "Rest" and more - Background playback with the screen locked, plus haptic feedback β–  CONTROLS - Start, pause, resume, reset - Skip to the next phase or step back to the previous one - Voice commands ("Start", "Pause", "Reset") and Siri Shortcuts β–  MAKE IT YOURS - 26 color themes or build your own palette - Ring or linear layout, solid or glass background, adjustable spacing - Live Activity & Dynamic Island show your phase and time on the Lock Screen β–  ORGANIZE & SHARE - Full-text search, favorites, and sorting by usage, created or updated date - Share routines by QR code or link, and save your own templates - Log sets with weight, reps & notes; auto-sync to Apple Health - Workout reminders on the days and times you choose β–  FREE & PRO Use the core timer for free. Upgrade to Pro for unlimited menus, multi-block workouts, Live Activities, custom themes, Apple Health sync, voice control, reminders & more β€” monthly, yearly, or one-time lifetime. ----------Designed by a Physical Therapist-------------- This app was developed by a physical therapist. Exercises performed with efficient time management are easier to sustain and more effective. Whether you train at the gym, do CrossFit or yoga, study, or work through rehabilitation, preset values let you start right away. Free sound files from Springin Sound Stock https://www.springin.org/sound-stock/ Free sound files from Sound Effect Labo https://soundeffect-lab.info/ Terms of Use (EULA) https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

HIIT Timer

Features
Read full description

Train smarter, not harder β€” with your personal interval trainer. Build your perfect interval timer for HIIT, boxing, or strength & cardio training. Customize every detail β€” from sets and rest to sounds and colors β€” for your ideal rhythm. Features β€’ Custom Workout Setup – Freely adjust the number of sets, workout and rest durations, and round counts. β€’ Fully Personalizable – Rename stages, assign colors, and fine-tune timing for each phase. β€’ Clean, Distraction-Free Interface – Focus only on your workout without unnecessary elements. β€’ Dark & Light Modes – Switch easily based on your environment or time of day. β€’ Alarm Sound Options – Choose from multiple clear tones or add your own custom sounds. β€’ Background Music Compatibility – Alarms work seamlessly with your favorite playlists. β€’ Save Unlimited Profiles – Store all your routines and access them anytime. Clarity, rhythm, and control β€” everything you need to stay consistent and motivated. Start now. Train your way.

Screenshots

MuscleTrainingTimer1 screens
HIIT Timer4 screens

Verdict

The call

The clearest difference is update cadence: HIIT Timer at weekly against MuscleTrainingTimer's every 2 months. HIIT Timer also leads on iOS requirement (13.0 vs 16.0). On price, ads, in-app purchases and device support there is nothing between them.

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

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

Both are free to download. MuscleTrainingTimer sells 1 one-off in-app purchase and HIIT Timer sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

MuscleTrainingTimer ships an update every 2 months, HIIT Timer weekly. The most recent releases landed on October 15, 2026 and September 28, 2026 respectively.

Scorecard2 real differences Β· 4 level
MuscleTrainingTimer versus HIIT Timer: the parameters behind the verdict, then further details
ParameterMuscleTrainingTimerHIIT Timer
PriceFreeFree
Update frequencyEvery 2 monthsWeekly β€” better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPad, iPod β€” better
Requires iOS16.013.0 β€” better
Further details β€” not scored
Size19 MB44 MB
Age rating4+4+
Developerryo muranakaJunhyong Park

In-app purchases

1 purchases

MuscleTrainingTimer

One-time1
  • Lifetime Pro$19.99
1 purchases

HIIT Timer

One-time1
  • Pro Upgrade$1.99

Questions

Is MuscleTrainingTimer free?
MuscleTrainingTimer is free to download, with in-app purchases available.
Is HIIT Timer free?
HIIT Timer is free to download, with in-app purchases available.
Do MuscleTrainingTimer or HIIT Timer have ads?
Neither MuscleTrainingTimer nor HIIT Timer shows ads.
Which is updated more often, MuscleTrainingTimer or HIIT Timer?
MuscleTrainingTimer ships an update every 2 months, and HIIT Timer weekly. Most recently, MuscleTrainingTimer was updated on October 15, 2026 and HIIT Timer on September 28, 2026.

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