# Interval Flow vs Round Timer

The clearest difference is monetization model: Round Timer at free against Interval Flow's subscription. Round Timer also leads on review sentiment (67% vs 48%) and rating (4.9 vs 4.7). Interval Flow's advantage is ratings volume (168 vs 14). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Interval Flow sells 10 in-app purchases, starting at $4.99 per 3 months and Round Timer sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Round Timer holds the better App Store score, 4.9 against 4.7. That said, the two scores are not equally well evidenced: Interval Flow has 168 ratings behind it against 14, so its average is the more settled of the two. Written reviews point the same way: 48% of Interval Flow's written reviews are positive against 67% of Round Timer's.

Interval Flow ships an update fortnightly, Round Timer every 2 weeks. The most recent releases landed on September 5, 2026 and August 23, 2026 respectively.

## The numbers

| Metric | Interval Flow | Round Timer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (168 ratings)](https://appshunter.io/ios/app/interval-flow-wod-timer/id6444124987/reviews) | **[4.9 (14 ratings)](https://appshunter.io/ios/app/round-timer-training-debate/id6458691329/reviews)** |
| Number of ratings | **168** | 14 |
| Positive reviews | 48.1% of reviews | **66.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 weeks |
| Monetization | Subscription | **Free** |
| Size | 20 MB | 18 MB |
| Requires iOS | 18.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Bence Kaposzta](https://appshunter.io/developer/1650069302) | [Yauhen Bahdanovich](https://appshunter.io/developer/1610300833) |

## What reviewers say

### 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 |


### Round Timer

[App page](https://appshunter.io/ios/app/round-timer-training-debate/id6458691329)

This interval timer offers extensive customization for workouts, training, or any timed activity. Features include custom presets, sound libraries, voice announcements, and detailed session tracking. Enjoy an intuitive, ad-free experience designed for flexibility.

**Highlights:** Customizable colors, Custom presets, Rich sound library, Voice announcements, Proximity sensor support, Shake-to-pause, Detailed session summaries

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Round Pro | $0.99 | one-time |


## Frequently asked questions

### Is Interval Flow free?

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

### Is Round Timer free?

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

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

Round Timer is rated higher. Interval Flow averages 4.7 out of 5 from 168 ratings, while Round Timer averages 4.9 from 14 ratings.

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

Neither Interval Flow nor Round Timer shows ads.

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

Interval Flow ships an update fortnightly, and Round Timer every 2 weeks. Most recently, Interval Flow was updated on September 5, 2026 and Round Timer on August 23, 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.*