Comparison

Interval Timer vs HIITLY

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

Head to head
About

Interval Timer

This app provides a simple and intuitive interval timer for workouts like HIIT, EMOM, and CrossFit. It features quick setup, guiding tones and colors, and background functionality to keep you focused on your training.

Highlights
  • Instant interval setup
  • Guiding tones and colors
  • HealthKit integration
  • Background functionality
  • Save and sync favorite timers
  • Preparation countdown
  • Pause and resume workouts
Features
Read full description

Discover the World’s Simplest Interval Timer — Bit Timer gets you off your phone or watch and into your workout in no time. ---------------- Key Features: Instant Setup — With a clean, no-frills design, set your work, rest, and repeat intervals in seconds. Guiding Tones and Colors — Navigate your workout with distinct tones and colors for each phase, keeping you on track effortlessly. Seamless HealthKit Integration (watchOS) — Automatically save your workouts and close those rings with Apple Health integration. Background Functionality — Keep your workout going even when your phone is locked or you’re using other apps, thanks to sound and haptics. Favorites Sync — Save and sync your favorite timers across iPhone, iPad, and Apple Watch for quick access. Why You’ll Love Bit Timer: - Quick Setup: Press and drag to set work, rest, and repeat intervals swiftly. - Preparation Countdown: Get ready with a 10-second countdown before your workout starts (3 seconds on Apple Watch). - Clear Audio Cues: Three distinct sounds indicate different stages of your workout, ensuring you stay on track. - Warning Tone: A countdown tone alerts you before the work phase begins. - Pause & Resume: Pause your workout anytime and resume right where you left off. - Easy Reset: Start from the beginning if interrupted, with a simple reset. ----------- Bit Timer promises to be the ‘World’s Simplest Interval Timer Ever.’ It is.” - Fast Company Design.* ----------- Privacy Policy: https://www.bittimer.com/privacy-policy Terms of Service: https://www.bittimer.com/terms-of-service End User License Agreement: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

HIITLY

This interval timer app allows for quick setup of custom workouts with adjustable intervals, rest periods, and rounds. It offers voice cues or beeps, background functionality, and detailed workout history to track progress. Ideal for HIIT, Tabata, and circuit training.

Highlights
  • Customizable intervals, rest, and rounds
  • Voice cues or beeps
  • Background functionality
  • Detailed workout history and stats
  • Repeat past workouts
  • Unlimited custom timer creation
Features
Read full description

A simple and beautiful interval timer built for your workouts. Set it up in seconds: Just drag to customize your intervals workout, rest, rounds, and more. Tap to start. That’s it. Your music stays in control: ∙ Continue using your favorite music apps during workouts. ∙ Choose between voice cues or beeps for each interval. ∙ Multitask freely — audio guides keep you on track even when you switch apps or follow an online workout. No more manual tracking: ∙ Access detailed history and stats to monitor your progress. ∙ Instantly repeat past workouts without setting them up again. Perfect for HIIT, Tabata, Stretch and circuit training. The app is designed for high-intensity interval training with features made for serious results: Display rounds, cycles, and durations clearly. Built-in interval stopwatch. Fully functional in the background. Create and save unlimited custom timers. Voice guidance to keep you focused. Got ideas to make the app better? Tap “Contact Support” in the app and share them with us — we’re always working to improve our Interval Timer!

Screenshots

Interval Timer4 screens
HIITLY4 screens

Verdict

The call

The clearest difference is in-app purchases: HIITLY at none against Interval Timer's 4. HIITLY also leads on update cadence (every 6 days vs every 4 weeks) and rating (5.0 vs 4.7). Interval Timer's advantage is ratings volume (534 vs 2). On price, 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. Interval Timer sells 4 in-app purchases, starting at $1.99 per month. HIITLY asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

HIITLY holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Interval Timer has 534 ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

Interval Timer ships an update every 4 weeks, HIITLY every 6 days. The most recent releases landed on October 12, 2026 and September 24, 2026 respectively.

Scorecard6 real differences · 4 level
Interval Timer versus HIITLY: the parameters behind the verdict, then further details
ParameterInterval TimerHIITLY
PriceFreeFree
Rating4.7 (534 ratings)5.0 (2 ratings) — better
Positive reviews76.8% of reviews—
Number of ratings534 — better2
Update frequencyEvery 4 weeksEvery 6 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPod
Requires iOS17.015.1 — better
Further details — not scored
Size15 MB27 MB
Age rating4+4+
DeveloperPeiter BuickMatys Bouziane

Customer experience

Interval Timer

All ratings530 ratings
Positive93.4%
Neutral1.7%
Negative4.9%
Written reviews185 reviews
Positive76.8%
Neutral7.0%
Negative16.2%

HIITLY

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Interval Timer

Reported bugs

2 issues
  • Timer continues counting down even after app is closed
  • Issues with music volume reduction while app is in use

Requested features

4 requests
  • Ability to save and load custom workout routines
  • Option to increase work interval duration beyond 4 minutes
  • Apple Watch app integration
  • More sound effect options

HIITLY

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

Interval Timer

Subscriptions3
  • Bit Timer Pro$1.991 Month
  • Bit Timer Pro$4.991 Year
  • Bit Timer Pro$9.991 Year
One-time1
  • Bit Timer Pro Lifetime$17.99
None

HIITLY

No in-app purchases

Questions

Is Interval Timer free?
Interval Timer is free to download, with in-app purchases available.
Is HIITLY free?
HIITLY is free to download, with no in-app purchases.
Which has better reviews, Interval Timer or HIITLY?
HIITLY is rated higher. Interval Timer averages 4.7 out of 5 from 534 ratings, while HIITLY averages 5.0 from 2 ratings.
Do Interval Timer or HIITLY have ads?
Neither Interval Timer nor HIITLY shows ads.
Which is updated more often, Interval Timer or HIITLY?
Interval Timer ships an update every 4 weeks, and HIITLY every 6 days. Most recently, Interval Timer was updated on October 12, 2026 and HIITLY on September 24, 2026.

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