# RUN interval vs PT Fit Works

The clearest difference is review sentiment: RUN interval at 77% against PT Fit Works's 0%. RUN interval also leads on rating (4.7 vs 1.9) and ratings volume (1K vs 14). PT Fit Works's advantage is in-app purchases (none vs 2). On price, ads, device support and iOS requirement there is nothing between them.

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

RUN interval holds the better App Store score, 4.7 against 1.9. That said, the two scores are not equally well evidenced: RUN interval has 1K ratings behind it against 14, 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 0% of PT Fit Works's.

RUN interval ships an update every 3 months, PT Fit Works every 6 months. The most recent releases landed on October 18, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | RUN interval | PT Fit Works |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (1K ratings)](https://appshunter.io/ios/app/run-interval-running-timer/id1352270752/reviews)** | [1.9 (14 ratings)](https://appshunter.io/ios/app/pt-fit-works/id1438710443/reviews) |
| Number of ratings | **1K** | 14 |
| Positive reviews | **77.5% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 6 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 34 MB | 83 MB |
| Requires iOS | 15.6 | **14.0** |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CAN YOU HEAR ME SOFTWARE](https://appshunter.io/developer/711042540) | [Corporate Fitness Works](https://appshunter.io/developer/1438710442) |

## 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 |


### PT Fit Works

[App page](https://appshunter.io/ios/app/pt-fit-works/id1438710443)

This app centralizes workout management, connecting you with your personal trainer. Track progress, view guided exercises with videos, book sessions, and communicate with your trainer for continuous motivation and coaching.

**Highlights:** Book sessions online, View customized workouts, Video exercise demonstrations, Track workout progress, Communicate with trainer, Access nutrition tools

**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 PT Fit Works free?

PT Fit Works is free to download, with no in-app purchases.

### Which has better reviews, RUN interval or PT Fit Works?

RUN interval is rated higher. RUN interval averages 4.7 out of 5 from 1K ratings, while PT Fit Works averages 1.9 from 14 ratings.

### Do RUN interval or PT Fit Works have ads?

Neither RUN interval nor PT Fit Works shows ads.

### Which is updated more often, RUN interval or PT Fit Works?

RUN interval ships an update every 3 months, and PT Fit Works every 6 months. Most recently, RUN interval was updated on October 18, 2026 and PT Fit Works on October 8, 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.*