# HIIT Workout Timer vs RoundFlow

The clearest difference is update cadence: RoundFlow at every 11 days against HIIT Workout Timer's monthly. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. HIIT Workout Timer sells 3 in-app purchases, starting at $2.99 per 7 days and RoundFlow sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

HIIT Workout Timer ships an update monthly, RoundFlow every 11 days. The most recent releases landed on October 8, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | HIIT Workout Timer | RoundFlow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/roundflow-interval-timer/id6785911960/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 11 days** |
| Monetization | — | Freemium |
| Size | 11 MB | 11 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | **iPhone, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Phuc Pham](https://appshunter.io/developer/1893081423) | [Zakaria Elkassmi](https://appshunter.io/developer/6785544936) |

## What reviewers say

### HIIT Workout Timer

[App page](https://appshunter.io/ios/app/hiit-workout-timer-tabata/id6772269676)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $2.99 | per 7 days |
| Yearly | $14.99 | per year |
| Lifetime Pro | $29.99 | one-time |


### RoundFlow

[App page](https://appshunter.io/ios/app/roundflow-interval-timer/id6785911960)

This app provides a customizable interval timer for various combat sports and fitness routines. It seamlessly integrates with music apps, allowing your playlist to continue uninterrupted during workouts. Features include coach voice prompts, combo calls, and workout tracking.

**Highlights:** Music integration with Spotify, Apple Music, YouTube Music, Customizable round, rest, and warm-up/cool-down timers, Recorded coach voice and combo callouts, Workout tracking with calendar and streaks, Apple Watch companion app with haptic feedback, Workout art generation for social sharing, Group session synchronization

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RoundFlow Pro (Monthly) | $2.99 | per month |
| RoundFlow Pro (Yearly) | $7.99 | per year |
| RoundFlow Pro (Lifetime) | $24.99 | one-time |


## Frequently asked questions

### Is HIIT Workout Timer free?

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

### Is RoundFlow free?

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

### Do HIIT Workout Timer or RoundFlow have ads?

Neither HIIT Workout Timer nor RoundFlow shows ads.

### Which is updated more often, HIIT Workout Timer or RoundFlow?

HIIT Workout Timer ships an update monthly, and RoundFlow every 11 days. Most recently, HIIT Workout Timer was updated on October 8, 2026 and RoundFlow on October 10, 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.*