# RUN interval vs GRIT

The clearest difference is in-app purchases: GRIT at none against RUN interval's 2. GRIT also leads on update cadence (every 2 days vs every 3 months). RUN interval's advantage is iOS requirement (15.6 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. RUN interval sells 2 one-off in-app purchases. GRIT asks for nothing beyond the download.

RUN interval ships an update every 3 months, GRIT every 2 days. The most recent releases landed on October 15, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | RUN interval | GRIT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (1K ratings)](https://appshunter.io/ios/app/run-interval-running-timer/id1352270752/reviews)** | — |
| Number of ratings | **1K** | — |
| Positive reviews | 77.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 34 MB | 17 MB |
| Requires iOS | **15.6** | 18.0 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [CAN YOU HEAR ME SOFTWARE](https://appshunter.io/developer/711042540) | [Andrew Dunn](https://appshunter.io/developer/1895547129) |

## 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 |


### GRIT

[App page](https://appshunter.io/ios/app/grit-workout-and-wod-timer/id6782134881)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is RUN interval free?

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

### Is GRIT free?

GRIT is free to download, with no in-app purchases.

### Do RUN interval or GRIT have ads?

Neither RUN interval nor GRIT shows ads.

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

RUN interval ships an update every 3 months, and GRIT every 2 days. Most recently, RUN interval was updated on October 15, 2026 and GRIT on October 13, 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.*