Comparison

Interval Timer | HIIT Training vs HelloSun

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 Training

This app provides a customizable interval timer for various workout types, including HIIT, Tabata, and boxing. It features large, easy-to-read displays and can track and share workout data. It also offers a Wear OS companion app for wrist-based training.

Highlights
  • Customizable work and rest intervals
  • Large, full-screen display
  • Workout tracking and sharing
  • Wear OS companion app
  • Distance-based intervals
  • Background operation with screen off
Features
Read full description

Interval Timer is a simple, colorful workout timer for HIIT, Tabata, circuit training, boxing rounds and any workout built from rounds of work and rest, on your phone and on your Apple Watch. It times every round, keeps every workout, and turns it into a card you can share. No account and no sign-up needed. Set your series, train time and rest time, then press start. Big numbers and a full-screen color for every phase mean you can read the timer from across the room, mid-burpee, without reaching for your glasses. TRACK AND SHARE EVERY WORKOUT - See your run or ride on a real map, the route painted in the color of each interval - Distance, pace, average and max speed, and steps for the whole workout - Every interval on its own: heart rate, speed and pace for each sprint and each rest - Your week and month at a glance in the Activity tab, with your training streak - Share a workout as a card for your story: over your photo, over the map, or live from the camera - Finished workouts go to Apple Health BUILD ANY WORKOUT - Repeat blocks you can nest, for rounds within rounds - Custom phases, each with its own name, color, sound and vibration - Distance phases: run 400 m instead of 2 minutes - Drag and drop to reorder phases, blocks and saved timers - Save workouts as presets and start them in one tap - Share a timer with a friend through a link or a QR code TRAIN WITH THE SCREEN OFF A colored notification keeps counting while the phone is in your pocket: current phase, time remaining, and quick pause, stop and skip controls, with a heads-up alert at every phase change. Nothing stops when the screen does. A REAL WEAR OS APP Not a remote control. Build and run interval timers on the watch itself, with heart rate, calories and GPS distance on your wrist, an ongoing activity on your watch face and a vibration at every phase change, so you can train with your phone at home. Workouts from the watch land in your history on the phone. MADE FOR - HIIT and Tabata workouts - Circuit training and CrossFit style WODs - EMOM and AMRAP rounds - Boxing, MMA and jump rope rounds - Running, track and cycling intervals - Kettlebell, dumbbell and bodyweight sets - Stretching, mobility and yoga holds - Physio and rehabilitation exercises - Pomodoro study and focus sessions ONE TIMER, EVERY SPORT As a HIIT timer it counts work and rest for you so you never check the clock mid-round. As a Tabata timer the classic 20/10 for eight rounds is two taps away. As a boxing round timer it calls three-minute rounds with a minute between them. As a running interval timer it counts your sprints and recoveries, or the meters, and shows each one on the map afterwards. Keep training with the screen off: the timer keeps running in the background and alerts you at every phase change. YOUR DATA STAYS YOURS Shared cards leave out the first and last 200 m of a route, so they never show where you live. Your routes are never sold, never used for ads and never used to train AI. FREE TO START, PRO WHEN YOU WANT MORE The timer is free to use. Interval Timer Pro removes the ads, saves unlimited timers (the free plan keeps up to 3), and backs up your timers, history and personal sounds to every device you use. It also supports an independent developer. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://lucianosantos.dev/apps/interval-timer/privacy_policy.md

About

HelloSun

Track your daily outdoor time and visualize your progress towards a goal. The app turns your time spent outside into a visual representation, showing how much daylight you've had and how much is left to reach your daily target. It also provides UV index estimates to help you enjoy sunshine safely.

Highlights
  • Visualize daily daylight progress
  • Standalone Apple Watch app
  • UV index and skin type estimation
  • Home Screen and Lock Screen widgets
  • Watch face complications
  • Streak and history tracking
  • Privacy-focused, no account needed
Features
Read full description

Get your daily daylight. How much time have you spent outside today? HelloSun turns your time outdoors into something you can actually see — right on your Apple Watch and iPhone. Your day starts in darkness. Every minute you spend outside makes the sky brighter, until the sun is shining and your daily goal is reached. SEE YOUR DAYLIGHT AT A GLANCE Your Apple Watch already tracks the time you spend outside. HelloSun turns that data into a simple, visual daily goal. FROM NIGHT TO DAY No complicated charts. Your progress is represented as the time of day. The closer you get to your goal, the brighter it becomes. MADE FOR APPLE WATCH The standalone Watch app runs right on your wrist. Your iPhone can stay at home. YOUR SUNLIGHT BUDGET See how much daylight you've already had and how much is left to reach your daily goal. SUNSHINE, WITHOUT THE SUNBURN HelloSun combines the live UV index, your skin type and the sunlight you've already had to give you an easy-to-understand estimate for the day. HelloSun is not a medical device. WIDGETS & COMPLICATIONS Keep your daylight progress where you can see it — on your Home Screen, Lock Screen and watch face. YOUR DATA STAYS YOURS Daylight data is processed on your iPhone and Apple Watch. No account. No server. No uploads. No ads. No trackers. STREAKS, RECORDS & HISTORY See your streaks, discover your best days and look back at your progress over time. Going outside doesn't have to be complicated. HelloSun. Get your daylight.

Screenshots

Interval Timer | HIIT Training4 screens
HelloSun4 screens

Verdict

The call

The clearest difference is price: Interval Timer | HIIT Training at Free against HelloSun's $2.99. Interval Timer | HIIT Training also leads on iOS requirement (16.0 vs 26.0). HelloSun's advantage is in-app purchases (none vs 3) and ads (none vs shown). On 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

Interval Timer | HIIT Training is free to download; HelloSun costs $2.99 up front. Interval Timer | HIIT Training sells 3 in-app purchases, starting at $1.99 per month. HelloSun asks for nothing beyond the download.

Scorecard5 real differences · 5 level
Interval Timer | HIIT Training versus HelloSun: the parameters behind the verdict, then further details
ParameterInterval Timer | HIIT TrainingHelloSun
PriceFree — better$2.99
Rating1.0 (1 ratings) — better—
Positive reviews—100.0% of reviews
Number of ratings1 — better—
Update frequencyEvery 10 days—
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPad, Apple Watch — betteriPhone, Apple Watch
Requires iOS16.0 — better26.0
Further details — not scored
Size103 MB31 MB
Age rating4+12+
DeveloperLS PROGRAMACAO LTDAKevin Reutter

Customer experience

Interval Timer | HIIT Training

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%

HelloSun

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

Interval Timer | HIIT Training

Subscriptions2
  • Interval Timer Pro Monthly$1.991 Month
  • Interval Timer Pro Annual7 Days trial$11.991 Year
One-time1
  • Interval Timer Pro Lifetime$29.99
None

HelloSun

No in-app purchases

Questions

Is Interval Timer | HIIT Training free?
Interval Timer | HIIT Training is free to download, with in-app purchases available.
Is HelloSun free?
HelloSun costs $2.99, with no in-app purchases.
Do Interval Timer | HIIT Training or HelloSun have ads?
Interval Timer | HIIT Training shows ads; HelloSun does not.

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