Comparison

Interval Timer □ HIIT Timer vs Timefully

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 Timer

Create custom workout timers with adjustable intervals for exercise and rest. Track your progress with detailed history and statistics, and repeat past workouts easily. Enjoy audio cues without interrupting your music.

Highlights
  • Customizable intervals
  • Workout and rest timers
  • Voice or beep guides
  • Background audio support
  • Workout history and statistics
  • Repeat previous workouts
Features
Read full description

A simple and beautiful interval timer. 1. Drag to set your custom intervals for workout, rest, rounds, etc 2. Tap to start. Interval Timer doesn't interfere with your music or other apps: ∙ Listen to your music apps while you workout. ∙ Voice or beep guides for every workout. ∙ You can leave the app and still listen to the audio guides, in order to follow a workout you found online. And no need to manually record your workouts: ∙ Detailed history and statistics pages to track your progress. ∙ Repeat a previous workout from your history, so you don't need to set it again. If you have any ideas for how to improve the app, just tap "Contact Support' inside the app and let us know! We are always trying to improve Interval Timer This app includes an optional auto-renewable subscription (Premium Pass): Premium Pass beings with a free trial period, then an auto-renewable monthly subscription when trial ends. Payment will be charged to your Apple account at confirmation of purchase and will automatically renew (at the duration/price selected) unless auto-renew is turned off at least 24 hrs before the end of the current period. Account will be charged for renewal within 24-hours prior to the end of the current period. Current subscription may not be cancelled during the active subscription period; however, you can manage your subscription and/or turn off auto-renewal by visiting your Apple Account Settings after purchase. Any unused portion of the free initial period will be forfeited when you purchase a subscription. Privacy Policy: https://float.support/interval-timer/privacy Terms of Use: https://float.support/interval-timer/terms

About

Timefully

This app provides a distraction-free meditation timer designed to help users build consistent habits. It offers customizable timers, rewarding progress tracking with virtual tree growth, and detailed statistics to motivate your practice.

Highlights
  • Customizable meditation timer with unlimited presets
  • Virtual tree growth for practice motivation
  • Comprehensive session statistics and charts
  • Emotion and note tracking
  • Multiple user profiles
  • Apple Watch integration with heart rate tracking
Features
Read full description

Timefully helps meditators build a practice that lasts. A beautifully simple meditation timer with deep tracking, tree-growth motivation, and comprehensive statistics — trusted by 40,000+ meditators worldwide and rated 4.8 stars. WHY TIMEFULLY? Timefully is designed for meditators who know what they want — a distraction-free timer that stays out of your way, tracks your progress, and keeps you motivated. No guided content, no social feed, no ads. Just a powerful, beautiful tool for the practice you already have — Vipassana, Zen, mindfulness, mantra, yoga, or breathwork. YOUR TIMER, YOUR WAY • Unlimited presets per profile — create as many as you need • Unlimited segments: warm-up, main, intervals, cool-down, and more • Tap any segment to adjust its duration during setup • Open session mode for indefinite meditation • Count up or count down — your choice • Simple Mode hides the clock for deeper focus • Beautiful curated backgrounds, or use your own photos • Live Activity and Dynamic Island keep your session in view BEAUTIFUL BELLS & SOUNDS • 40 bell sounds: Tibetan bells, singing bowls, gongs, wind chimes, flutes, and more • Starting and ending bells (1–3 rings each) • Interval bells at set times or repeating • 6 ambient sounds: Rain, Forest, Ocean, Wind, Fireplace, Birds • Add your own custom sounds • Fade-in option and volume control • Silent mode with haptics TRACK YOUR PROGRESS • Automatic session tracking from the timer • Manual entry — including backfilling past sessions • Post-session mood and emotion tracking • Notes and reflections, with a word cloud built from your notes • 6 statistics reports with weekly, monthly, and yearly views • Monthly calendar glance view • AI insights with Apple Intelligence STAY MOTIVATED • Set daily and weekly practice goals • Grow virtual trees through consistent practice • 6 tree species: Oak, Cherry Blossom, Mangrove, Maple, Olive, Wisteria • Earn milestones and achievements, and keep your streak • Inspiring quotes after each session — or turn all in-app text off for quiet, focused sessions BUILT FOR APPLE WATCH • Standalone timer on your wrist • Real-time heart rate and HRV during sessions • Haptic guidance and Always-On Display support • Complications, and sessions saved as workouts • Fully 1:1 with iPhone — including intervals MULTIPLE PROFILES & PRESETS • Profiles for different practices: Meditation, Yoga, and more • Unlimited presets per profile, each with its own background • Quick switching between configurations PRIVATE BY DEFAULT • No account required — your data stays in your own iCloud • iCloud sync across iPhone, iPad, Mac, and Apple Watch • Export and import your data anytime (Open Sit, CSV and JSON) SEAMLESS INTEGRATION • Apple Health — sessions saved as Mindful Minutes • Siri & Shortcuts, with a ready-made Timefully Shortcut and Action Button support • Do Not Disturb automation • 6 Home Screen widgets and 4 Lock Screen widgets ON YOUR MAC • Native macOS app, ideal for desk meditation during work breaks • Large screen for comprehensive statistics • iCloud sync keeps your practice in step with iPhone and iPad PRICING AND TERMS The timer is always free — no account, no ads, no trial limits. Timefully Pro unlocks iCloud sync, Apple Watch heart rate & HRV, statistics & AI insights, tree growth, achievements & streaks, mood tracking, unlimited profiles, premium bells, and widgets. Timefully Pro offers two auto-renewing subscription options: Monthly: $2.99 per month Annual: $11.99 per year You can also purchase Lifetime access for a one-time payment of $24.99. These prices are for United States users. Pricing in other countries may vary. TERMS AND CONDITIONS: https://www.timefully.co/terms PRIVACY POLICY: https://www.timefully.co/privacy

Screenshots

Interval Timer □ HIIT Timer4 screens
Timefully4 screens

Verdict

The call

The clearest difference is update cadence: Timefully at every 6 days against Interval Timer □ HIIT Timer's every 5 weeks. Timefully also leads on review sentiment (85% vs 61%). Interval Timer □ HIIT Timer's advantage is ratings volume (86K vs 1.1K) and iOS requirement (15.6 vs 18.0). On price, rating, ads and in-app purchases 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 Timer sells 5 in-app purchases, starting at $1.99 per month and Timefully sells 5 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for Interval Timer □ HIIT Timer against 4.8 for Timefully. That said, the two scores are not equally well evidenced: Interval Timer □ HIIT Timer has 86K ratings behind it against 1.1K, so its average is the more settled of the two. Written reviews are what separate them: 61% of Interval Timer □ HIIT Timer's written reviews are positive against 85% of Timefully's.

UpkeepUpdate frequency

Interval Timer □ HIIT Timer ships an update every 5 weeks, Timefully every 6 days. The most recent releases landed on September 24, 2026 and September 18, 2026 respectively.

Scorecard4 real differences · 6 level
Interval Timer □ HIIT Timer versus Timefully: the parameters behind the verdict, then further details
ParameterInterval Timer □ HIIT TimerTimefully
PriceFreeFree
Rating4.8 (86K ratings)4.8 (1.1K ratings)
Positive reviews60.7% of reviews85.0% of reviews — better
Number of ratings86K — better1.1K
Update frequencyEvery 5 weeksEvery 6 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, Mac, Apple Watch — better
Requires iOS15.6 — better18.0
Further details — not scored
Size34 MB391 MB
Age rating4+4+
DeveloperFloat Tech, LLCLalune Creative AB

Customer experience

Interval Timer □ HIIT Timer

All ratings85,854 ratings
Positive96.7%
Neutral1.2%
Negative2.1%
Written reviews1,810 reviews
Positive60.7%
Neutral6.2%
Negative33.1%

Timefully

All ratings1,083 ratings
Positive96.4%
Neutral1.8%
Negative1.8%
Written reviews160 reviews
Positive85.0%
Neutral6.9%
Negative8.1%

User reviews

Interval Timer □ HIIT Timer

From 86K App Store ratings

What we love

  • 🚀 Simple and easy to use
  • 👍 Customizable settings
  • 🚀 Intuitive interface
  • 🚀 Effective for HIIT workouts
  • 👍 Helpful voice prompts

Room to improve

  • 🔒 Requires subscription after limited free use
  • 🐛 Music volume issues with voice prompts
  • 🐛 Inconsistent behavior when switching apps
  • 🐛 Lack of final workout notification

Timefully

From 1.1K App Store ratings

What we love

  • 👍 Simple and efficient
  • 🚀 Streamlined interface
  • 💡 Helpful tracking features
  • 🌳 Enjoyable tree growth metaphor
  • 👍 Customizable timer settings

Room to improve

  • 🐛 Occasional timer issues
  • 🔋 Inconsistent Apple Watch integration
  • 💰 Subscription model concerns
  • 🔍 Limited emotion/mood tracking options

Bugs and requests

Interval Timer □ HIIT Timer

Reported bugs

3 issues
  • Timer not always accurate
  • Favorites/saved workouts feature not working
  • Inconsistent behavior when pausing/resuming

Requested features

3 requests
  • Ability to save and name custom workouts
  • More flexibility in exercise/rest time settings
  • Option to adjust volume of voice prompts

Timefully

Reported bugs

3 issues
  • Timer not always completing sessions
  • Apple Watch integration problems
  • Incorrect activity log data

Requested features

5 requests
  • More bell/chime sound options
  • Ability to adjust timer from Apple Watch
  • Option to disable tree growth feature
  • Expanded emotion/mood tracking
  • Sync progress across devices

In-app purchases

5 purchases

Interval Timer □ HIIT Timer

Subscriptions2
  • Premium Pass7 Days trial$1.991 Month
  • Premium Pass7 Days trial$2.991 Month
One-time3
  • Lifetime Pass$14.99
  • Lifetime Pass$19.99
  • Premium Forever Promo$29.99
5 purchases

Timefully

Subscriptions4
  • Monthly$2.991 Month
  • Quarterly$5.993 Months
  • Annual2 variants$11.991 Year
Show 1 more
  • Timefully Annual, 14-day Trial14 Days trial2 variants$11.991 Year
One-time1
  • Lifetime$24.99

Questions

Is Interval Timer □ HIIT Timer free?
Interval Timer □ HIIT Timer is free to download, with in-app purchases available.
Is Timefully free?
Timefully is free to download, with in-app purchases available.
Which has better reviews, Interval Timer □ HIIT Timer or Timefully?
Interval Timer □ HIIT Timer and Timefully are both rated 4.8 out of 5 on the App Store, from 86K and 1.1K ratings respectively.
Do Interval Timer □ HIIT Timer or Timefully have ads?
Neither Interval Timer □ HIIT Timer nor Timefully shows ads.
Which is updated more often, Interval Timer □ HIIT Timer or Timefully?
Interval Timer □ HIIT Timer ships an update every 5 weeks, and Timefully every 6 days. Most recently, Interval Timer □ HIIT Timer was updated on September 24, 2026 and Timefully on September 18, 2026.

Other comparisons