# RoundFlow vs Boxing, HIIT, Interval timer

The clearest difference is in-app purchases: Boxing, HIIT, Interval timer at none against RoundFlow's 1. RoundFlow's advantage is update cadence (every 5 days vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. RoundFlow sells 1 one-off in-app purchase. Boxing, HIIT, Interval timer asks for nothing beyond the download.

RoundFlow ships an update every 5 days, Boxing, HIIT, Interval timer every 3 months. The most recent releases landed on September 25, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | RoundFlow | Boxing, HIIT, Interval timer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/roundflow/id6739583598/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 3 months |
| Monetization | Free | — |
| Size | 87 MB | 12 MB |
| Requires iOS | **15.5** | 16.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [genghong Xie](https://appshunter.io/developer/1785558382) | [Mykhaylo Zhylevych](https://appshunter.io/developer/1646264666) |

## What reviewers say

### RoundFlow

[App page](https://appshunter.io/ios/app/roundflow/id6739583598)

This training app offers a unique intergalactic-themed HIIT and fighting experience. It features real-time punch power measurement, voice control for hands-free operation, and global leaderboards. All your training data is securely stored in the cloud.

**Highlights:** Real-time punch power detection, Voice control for hands-free operation, Customizable HIIT timers, Global leaderboards, Cloud data synchronization, Training calendar and log

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade plus | $5.99 | one-time |


### Boxing, HIIT, Interval timer

[App page](https://appshunter.io/ios/app/boxing-hiit-interval-timer/id6742114962)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RoundFlow free?

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

### Is Boxing, HIIT, Interval timer free?

Boxing, HIIT, Interval timer is free to download, with no in-app purchases.

### Do RoundFlow or Boxing, HIIT, Interval timer have ads?

Neither RoundFlow nor Boxing, HIIT, Interval timer shows ads.

### Which is updated more often, RoundFlow or Boxing, HIIT, Interval timer?

RoundFlow ships an update every 5 days, and Boxing, HIIT, Interval timer every 3 months. Most recently, RoundFlow was updated on September 25, 2026 and Boxing, HIIT, Interval timer on September 17, 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.*