# PT Timer vs Interval Flow

The clearest difference is monetization model: PT Timer at free with in-app purchases against Interval Flow's subscription. PT Timer also leads on review sentiment (81% vs 48%) and iOS requirement (15.6 vs 18.6). Interval Flow's advantage is rating (4.7 vs 4.3) and update cadence (fortnightly vs every 5 weeks). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. PT Timer sells 3 in-app purchases, starting at $0.99 per month and Interval Flow sells 10 in-app purchases, starting at $4.99 per 3 months. Whichever you choose, the download price is not the number that matters.

Interval Flow holds the better App Store score, 4.7 against 4.3. Both are backed by a comparable volume of ratings — 95 and 168 respectively. Written reviews complicate that: 81% of PT Timer's written reviews are positive against 48% of Interval Flow's, so the app with the better star average is not the one people write more warmly about.

PT Timer ships an update every 5 weeks, Interval Flow fortnightly. The most recent releases landed on August 11, 2026 and September 5, 2026 respectively.

## The numbers

| Metric | PT Timer | Interval Flow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (95 ratings)](https://appshunter.io/ios/app/pt-timer-stretch-and-exercise/id410605817/reviews) | **[4.7 (168 ratings)](https://appshunter.io/ios/app/interval-flow-wod-timer/id6444124987/reviews)** |
| Number of ratings | 95 | **168** |
| Positive reviews | **81.2% of reviews** | 48.1% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Fortnightly** |
| Monetization | **Free with in-app purchases** | Subscription |
| Size | 52 MB | 20 MB |
| Requires iOS | **15.6** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Qi Analytics LLC](https://appshunter.io/developer/394896437) | [Bence Kaposzta](https://appshunter.io/developer/1650069302) |

## What reviewers say

### PT Timer

[App page](https://appshunter.io/ios/app/pt-timer-stretch-and-exercise/id410605817)

This app helps you manage physical therapy routines by timing exercises, counting reps, and storing custom instructions. Focus on your form while the app guides you through your prescribed regimen.

**Highlights:** Custom exercise creation with instructions and photos, Precise timer and rep counting, Voice and tone cues, Exercise scheduling and reminders, Note-taking and PDF export, Apple Health integration

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full functionality | $0.99 | per month |
| Full functionality | $1.99 | per 3 months |
| Full functionality | $4.49 | per year |

**What reviewers like**

- 💪 Highly customizable routines
- ⏱️ Excellent for timing exercises
- 💯 Great for physical therapy
- 🎵 Audio cues are helpful
- 📸 Ability to add photos

**What reviewers complain about**

- 🤔 Not intuitive to use
- 📚 Confusing instructions
- 💸 Limited free mode/paywall
- 🐛 Frequent crashes
- 🖼️ Photo upload issues

**Reported bugs**

- App crashes frequently
- Photo upload fails and hangs app
- Audio playback errors
- Countdown timer jumps to end
- Camera function not working

**Requested features**

- Export and import CSV files
- Sync exercises between devices
- Add photos from photo library
- Video support
- Share exercises and workouts with others


### Interval Flow

[App page](https://appshunter.io/ios/app/interval-flow-wod-timer/id6444124987)

This app revolutionizes fitness routines with deep customization and advanced tracking for various activities like HIIT, Yoga, and CrossFit. It allows users to create, share, and follow personalized workouts with features like color-coded intervals, real-time progress tracking, and voice assistance.

**Highlights:** Color-coded intervals, Customizable circuits, Real-time progress tracking, Voice assist and search, Exercise library, Workout sharing

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3 Month | $4.99 | per 3 months |
| 1 Month | $9.99 | per month |
| 1 Month, 3 day trial | $9.99 | per month |
| Annual | $14.99 | per year |
| 1 Year discounted | $25.95 | per year |
| 1 Year, 3 day trial | $39.99 | per year |
| 1 Year | $39.99 | per year |
| 1 Year Intro month | $39.99 | per year |
| Free Lifetime subscription | Free | one-time |
| Lifetime | $24.99 | one-time |


## Frequently asked questions

### Is PT Timer free?

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

### Is Interval Flow free?

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

### Which has better reviews, PT Timer or Interval Flow?

Interval Flow is rated higher. PT Timer averages 4.3 out of 5 from 95 ratings, while Interval Flow averages 4.7 from 168 ratings.

### Do PT Timer or Interval Flow have ads?

Neither PT Timer nor Interval Flow shows ads.

### Which is updated more often, PT Timer or Interval Flow?

PT Timer ships an update every 5 weeks, and Interval Flow fortnightly. Most recently, PT Timer was updated on August 11, 2026 and Interval Flow on September 5, 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.*