RunIntervals vs HIIT
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RunIntervals
Set custom interval timers with voice or tone alerts. This app seamlessly integrates with your existing audio and fitness apps, pausing or lowering music volume to ensure you never miss an alert.
- Customizable interval durations
- Voice and tone alerts
- Music volume lowering
- Spoken audio pausing
- Works with other apps
- No user data collection
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Just pick your interval durations and click GO! "Plays well with others," so if you have favorite apps for audio or fitness tracking it will work well alongside those. Audio voice alerts or tones will momentarily lower the volume of your music or briefly pause spoken audio just long enough to hear the alert, then let you get right back to listening! This app does not track or collect any user data.
HIIT
Design and track custom interval running workouts with real-time data and audio cues. This app offers detailed post-run analysis and integrates with Apple Health and Apple Watch for phone-free training.
- Customizable intervals (time, distance, open)
- Support for HIIT, tempo, fartlek, pyramid, progression workouts
- Real-time tracking of pace, cadence, heart rate
- Audio cues for guidance
- Phone-free Apple Watch operation
- Post-run analysis and GPX export
- Apple Health integration
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Tired of tapping through menus before a run? Interval Running is a simple HIIT, tabata, and interval timer - say what you want, it builds the intervals, you run. Just tell it what you want. Say something like "eight rounds, 30 seconds fast, 30 seconds easy" and the timer builds your program right then - no forms, no menus, no fields to fill in before you can start running. Prefer to build it yourself? You can: - Set work and rest by time, distance, or leave it open - Choose HIIT, tabata, fartlek, tempo, or plain run/walk intervals - Save a routine once, reuse it whenever you want Everything you need is on the screen while you run, no extra taps. - Interval, pace, cadence, and heart rate at a glance - Audio cues tell you when to switch, no need to look down - Full Apple Watch support - leave your phone at home You don't want a training plan, a coach, or a program - you want a timer that starts and stops intervals exactly when you tell it to. You want to set up a workout on the way to the track without stopping to tap through screens. You do tabata or HIIT sessions and just need something that counts rounds. You run intervals on your own terms and don't want an app deciding your pace for you. After each run, see your intervals, pace, and heart rate. Export GPX files, sync with Apple Health, and connect an external heart rate monitor if you use one. Health app integration With your permission, your interval runs count toward Activity Rings, including the Exercise and Move rings. Say it. Start it. Run. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is review sentiment: RunIntervals at 90% against HIIT's 57%. RunIntervals also leads on rating (4.7 vs 4.3) and ratings volume (123 vs 34). HIIT's advantage is update cadence (every 2 weeks vs every 3 months). On price, ads, in-app purchases and monetization model 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
Both are free to download. RunIntervals sells 2 one-off in-app purchases and HIIT sells 8 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.
RunIntervals holds the better App Store score, 4.7 against 4.3. Both are backed by a comparable volume of ratings — 123 and 34 respectively. Written reviews point the same way: 90% of RunIntervals's written reviews are positive against 57% of HIIT's.
RunIntervals ships an update every 3 months, HIIT every 2 weeks. The most recent releases landed on September 21, 2026 and September 18, 2026 respectively.
| Parameter | RunIntervals | HIIT |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (123 ratings) — better | 4.3 (34 ratings) |
| Positive reviews | 90.4% of reviews — better | 57.1% of reviews |
| Number of ratings | 123 — better | 34 |
| Update frequency | Every 3 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPod, Apple Watch — better | iPhone, Apple Watch |
| Requires iOS | 11.3 — better | 17.0 |
| Further details — not scored | ||
| Size | 26 MB | 83 MB |
| Age rating | 4+ | 4+ |
| Developer | Robotic Jam LLC | Maxim Kazakov |
Customer experience
RunIntervals
HIIT
Bugs and requests
RunIntervals
Reported bugs
3 issues- Interval tones not working with podcast/music
- Interval tones not working on Apple Watch
- App randomly stops during workouts
Requested features
7 requests- Ability to swap run/walk intervals
- Option to start with walking
- Ability to set number of repeats
- Vibration alerts
- Longer interval options (up to 30/60/120 mins)
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- Repeat feature for intervals
- Total time limit for workout
HIIT
Not enough reviews yet to summarise bugs or requests.
In-app purchases
RunIntervals
- Small Tip$0.99
- Big Tip$2.99
HIIT
- Premium Monthly Day 2$0.991 Month
- Premium Weekly7 Days trial$3.997 Days
- Premium Monthly Day 1$4.991 Month
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- Premium Monthly7 Days trial$9.991 Month
- Premium 3 Months$19.993 Months
- Premium Annual Special Offer7 Days trial$29.991 Year
- Interval Run Premium Yearly7 Days trial$59.991 Year
- Intreval Run Premium Lifetime$39.99








