# RunIntervals vs HIIT

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.

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.

## The numbers

| Metric | RunIntervals | HIIT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (123 ratings)](https://appshunter.io/ios/app/runintervals/id1387917509/reviews)** | [4.3 (34 ratings)](https://appshunter.io/ios/app/hiit-simple-interval-timer/id6449472984/reviews) |
| Number of ratings | **123** | 34 |
| Positive reviews | **90.4% of reviews** | 57.1% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 26 MB | 83 MB |
| Requires iOS | **11.3** | 17.0 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Robotic Jam LLC](https://appshunter.io/developer/1330538093) | [Maxim Kazakov](https://appshunter.io/developer/1290266003) |

## What reviewers say

### RunIntervals

[App page](https://appshunter.io/ios/app/runintervals/id1387917509)

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.

**Highlights:** Customizable interval durations, Voice and tone alerts, Music volume lowering, Spoken audio pausing, Works with other apps, No user data collection

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $0.99 | one-time |
| Big Tip | $2.99 | one-time |

**What reviewers like**

- 🚀 Perfect app
- 🚀 Great app
- 🚀 Simple and effective
- 🚀 Straightforward and easy to use
- 🚀 Does exactly what it needs to

**What reviewers complain about**

- 🐛 Does not work
- 🐛 Tones fail
- 🐛 Alerts don't work
- 🐛 Stops randomly
- 🐛 No sound on watch

**Reported bugs**

- Interval tones not working with podcast/music
- Interval tones not working on Apple Watch
- App randomly stops during workouts

**Requested features**

- 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)


### HIIT

[App page](https://appshunter.io/ios/app/hiit-simple-interval-timer/id6449472984)

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.

**Highlights:** 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

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly Day 2 | $0.99 | per month |
| Premium Weekly | $3.99 | per 7 days |
| Premium Monthly Day 1 | $4.99 | per month |
| Premium Monthly | $9.99 | per month |
| Premium 3 Months | $19.99 | per 3 months |
| Premium Annual Special Offer | $29.99 | per year |
| Interval Run Premium Yearly | $59.99 | per year |
| Intreval Run Premium Lifetime | $39.99 | one-time |


## Frequently asked questions

### Is RunIntervals free?

RunIntervals is free to download, with in-app purchases available.

### Is HIIT free?

HIIT is free to download, with in-app purchases available.

### Which has better reviews, RunIntervals or HIIT?

RunIntervals is rated higher. RunIntervals averages 4.7 out of 5 from 123 ratings, while HIIT averages 4.3 from 34 ratings.

### Do RunIntervals or HIIT have ads?

Neither RunIntervals nor HIIT shows ads.

### Which is updated more often, RunIntervals or HIIT?

RunIntervals ships an update every 3 months, and HIIT every 2 weeks. Most recently, RunIntervals was updated on September 21, 2026 and HIIT on September 18, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*