# HIIT Interval Timer vs 博医系统定制版

The clearest difference is in-app purchases: 博医系统定制版 at none against HIIT Interval Timer's 1. 博医系统定制版 also leads on ads (none vs shown). HIIT Interval Timer's advantage is update cadence (every 5 months vs every 20 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. HIIT Interval Timer sells 1 one-off in-app purchase. 博医系统定制版 asks for nothing beyond the download.

HIIT Interval Timer ships an update every 5 months, 博医系统定制版 every 20 months. The most recent releases landed on October 8, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | HIIT Interval Timer | 博医系统定制版 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (102 ratings)](https://appshunter.io/ios/app/hiit-interval-timer/id980471893/reviews)** | — |
| Number of ratings | **102** | — |
| Positive reviews | 52.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 5 months** | Every 20 months |
| Monetization | Free with in-app purchases | — |
| Size | 10 MB | 18 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Thang Nguyen](https://appshunter.io/developer/921360262) | [Hengsheng Medical Technology Corp., Ltd](https://appshunter.io/developer/1250315539) |

## What reviewers say

### HIIT Interval Timer

[App page](https://appshunter.io/ios/app/hiit-interval-timer/id980471893)

This app provides a flexible interval timer for high-intensity training. Customize workout cycles, rest periods, and receive color, voice, and sound navigation cues. It runs in the background and offers a built-in music player.

**Highlights:** Customizable interval and rest times, Background and screen-locked operation, Color, voice, and sound navigation, Built-in music player, Create and manage custom timers, Multiple themes

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Upgrade | $4.99 | one-time |


### 博医系统定制版

[App page](https://appshunter.io/ios/app/id6449509492)

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

**In-app purchases:** none


## Frequently asked questions

### Is HIIT Interval Timer free?

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

### Is 博医系统定制版 free?

博医系统定制版 is free to download, with no in-app purchases.

### Do HIIT Interval Timer or 博医系统定制版 have ads?

HIIT Interval Timer shows ads; 博医系统定制版 does not.

### Which is updated more often, HIIT Interval Timer or 博医系统定制版?

HIIT Interval Timer ships an update every 5 months, and 博医系统定制版 every 20 months. Most recently, HIIT Interval Timer was updated on October 8, 2026 and 博医系统定制版 on September 26, 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.*