Comparison

Lets HIIT vs Gym Timer Pro

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

Head to head
About

Lets HIIT

Features
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LETS HIIT β€” TABATA & HIIT INTERVAL TIMER Train with clarity: work, rest, and rounds stay in sync from warm-up to cool-down. Lets HIIT is built for HIIT, Tabata, EMOM-style circuits, and quick cardio sessionsβ€”not a generic stopwatch. WHAT YOU SEE IN THE APP (AND ON OUR SCREENSHOTS): β€’ Home β€” One-tap Tabata (classic 4-minute ready) plus your weekly goal at a glance β€’ Workout β€” Full-screen timer with bold phases, progress ring, and optional voice callouts (work, rest, 3-2-1) β€’ Finish β€” Session summary and shareable finish image when you’re done β€’ Widget β€” Jump back in from your Home Screen without opening the app β€’ Ad-free (optional) β€” Remove banners and full-screen ads; the interval timer stays free START FAST: β€’ Tabata presets and HIIT quick starts β€’ Custom work / rest / warm-up / cool-down rounds β€’ Saved workoutsβ€”load your go-to routine in one tap β€’ Countdown and stopwatch when you need them STAY CONSISTENT: β€’ Weekly and monthly session goals β€’ Workout history and progress on your device β€’ Optional reminders on the days you choose BUILT FOR REAL TRAINING: β€’ Large, glanceable UI mid-set β€’ Voice + sound cues you can toggle anytime β€’ Dark theme for early or late sessions β€’ No account requiredβ€”your data stays on your phone AD-FREE SUBSCRIPTION (OPTIONAL): β€’ Subscribe to Ad-free to remove ads. The timer and core features remain free. Manage or cancel anytime in your App Store subscription settings. Restore purchases on a new device from Settings β†’ Ad-free. β€’ Questions? Privacy Policy and Terms of Use are linked in the app and on our website. SUBSCRIPTION TERMS: β€’ Ad-free is an auto-renewing subscription that removes banner and full-screen ads. The HIIT/Tabata timer stays free. Payment is charged to your Apple ID account. Subscription renews automatically unless canceled at least 24 hours before the end of the current period. Manage or cancel in Settings β†’ Apple ID β†’ Subscriptions. Restore purchases in the app (Settings β†’ Ad-free). β€’ Privacy Policy: https://letshiit.btsoft.dev/privacy.html β€’ Terms of Use: https://letshiit.btsoft.dev/terms.html Thanks for training with Lets HIITβ€”go crush your next round.

About

Gym Timer Pro

Features
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The complete gym timer. Free, really free. Gym Timer Pro is a Tabata, EMOM, AMRAP and interval timer built for people who actually train. No ads. No account. No subscription. No feature locked behind a paywall. Every timer, every setting, free forever. EVERY FORMAT YOU ACTUALLY USE β€’ Tabata: 20/10 x 8, or set your own work and rest β€’ EMOM: every minute on the minute, any number of rounds β€’ AMRAP: as many rounds as possible, with a running clock β€’ Interval Timer: any work, any rest, any number of rounds β€’ Round Timer: your own interval, repeated as many times as you like β€’ Lifting Pro: warm-up, training with one-tap rest presets, and cool-down in one flow β€’ Stretch Timer: quick stretch presets for before and after READABLE FROM ACROSS THE GYM A single full-screen ring and a huge remaining-time number. Round markers show where you are at a glance, so you never break form squinting at your phone. The clock scales up on iPad. LIGHT OR DARK Pick Light, Dark or System in Settings, and choose your own accent color. BUILT FOR A REAL SESSION β€’ Save any timer as a preset and launch it in one tap from Saved Timers β€’ Audio cues play alongside your music without stopping or lowering it β€’ Leaving a running timer asks first, so you never lose a workout by accident β€’ Type any time down to the second instead of fighting a picker EVERY WORKOUT, LOGGED History shows every session you finish. The Tracker adds a day streak, a 30-day activity graph, a monthly time goal and a full calendar view. Export it all to a spreadsheet whenever you like. APPLE HEALTH Finished workouts save to Apple Health, so your rings and training log stay honest. Gym Timer Pro only writes to Health; it never reads your health data. SYNCS ACROSS YOUR DEVICES iCloud sync is on by default. Build a preset on your iPhone and it's on your iPad before you get to the rack. iPhone and iPad. iOS 17 and later. No account needed: nothing to sign up for, nothing to cancel. Questions or a feature request? Get in touch from Settings. A real person reads every message.

Screenshots

Lets HIIT4 screens
Gym Timer Pro4 screens

Verdict

The call

The clearest difference is in-app purchases: Gym Timer Pro at none against Lets HIIT's 2. Gym Timer Pro also leads on ads (none vs shown). Lets HIIT's advantage is iOS requirement (15.6 vs 17.0). On price, update cadence 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. Lets HIIT sells 2 in-app purchases, starting at $2.49 per month. Gym Timer Pro asks for nothing beyond the download.

UpkeepUpdate frequency

Lets HIIT ships an update monthly, Gym Timer Pro every 3 weeks. The most recent releases landed on October 19, 2026 and October 28, 2026 respectively.

Scorecard3 real differences Β· 3 level
Lets HIIT versus Gym Timer Pro: the parameters behind the verdict, then further details
ParameterLets HIITGym Timer Pro
PriceFreeFree
Update frequencyMonthlyEvery 3 weeks β€” better
AdsYesNo β€” better
In-app purchasesYesNo β€” better
DevicesiPhone, iPad, iPod β€” betteriPhone, iPad
Requires iOS15.6 β€” better17.0
Further details β€” not scored
Size35 MB2 MB
Age rating4+4+
DeveloperBTS Software Development Company Limitedstefen manage

In-app purchases

2 purchases

Lets HIIT

Subscriptions2
  • Ad-free Monthly$2.491 Month
  • Ad-free Annual$12.991 Year
None

Gym Timer Pro

No in-app purchases

Questions

Is Lets HIIT free?
Lets HIIT is free to download, with in-app purchases available.
Is Gym Timer Pro free?
Gym Timer Pro is free to download, with no in-app purchases.
Do Lets HIIT or Gym Timer Pro have ads?
Lets HIIT shows ads; Gym Timer Pro does not.
Which is updated more often, Lets HIIT or Gym Timer Pro?
Lets HIIT ships an update monthly, and Gym Timer Pro every 3 weeks. Most recently, Lets HIIT was updated on October 19, 2026 and Gym Timer Pro on October 28, 2026.

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