# RUN interval vs HIIT

The clearest difference is rating: RUN interval at 4.7 against HIIT's 4.3. RUN interval also leads on review sentiment (77% vs 57%) and ratings volume (1K 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. RUN interval 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.

RUN interval holds the better App Store score, 4.7 against 4.3. That said, the two scores are not equally well evidenced: RUN interval has 1K ratings behind it against 34, so its average is the more settled of the two. Written reviews point the same way: 77% of RUN interval's written reviews are positive against 57% of HIIT's.

RUN interval ships an update every 3 months, HIIT every 2 weeks. The most recent releases landed on September 24, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | RUN interval | HIIT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (1K ratings)](https://appshunter.io/ios/app/run-interval-running-timer/id1352270752/reviews)** | [4.3 (34 ratings)](https://appshunter.io/ios/app/hiit-simple-interval-timer/id6449472984/reviews) |
| Number of ratings | **1K** | 34 |
| Positive reviews | **77.2% 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 | 34 MB | 83 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [CAN YOU HEAR ME SOFTWARE](https://appshunter.io/developer/711042540) | [Maxim Kazakov](https://appshunter.io/developer/1290266003) |

## What reviewers say

### RUN interval

[App page](https://appshunter.io/ios/app/run-interval-running-timer/id1352270752)

This app simplifies interval and Fartlek running by allowing you to set custom targets for time or distance during hard, easy, and rest efforts. It offers detailed post-run summaries, audio and visual feedback, and an Apple Watch app for enhanced training.

**Highlights:** Customizable interval sessions, Time and distance targets, Distance Goal option, Audio and visual feedback, Detailed run summaries, Apple Watch app, Strava sharing

**Features:** Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| The full RUN interval | $1.99 | one-time |
| The full RUN interval | $3.99 | one-time |


### 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 RUN interval free?

RUN interval 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, RUN interval or HIIT?

RUN interval is rated higher. RUN interval averages 4.7 out of 5 from 1K ratings, while HIIT averages 4.3 from 34 ratings.

### Do RUN interval or HIIT have ads?

Neither RUN interval nor HIIT shows ads.

### Which is updated more often, RUN interval or HIIT?

RUN interval ships an update every 3 months, and HIIT every 2 weeks. Most recently, RUN interval was updated on September 24, 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.*