# HT血压计 vs Interval Timer

The clearest difference is in-app purchases: HT血压计 at none against Interval Timer's 1. HT血压计 also leads on ads (none vs shown) and iOS requirement (8.0 vs 17.0). Interval Timer's advantage is update cadence (weekly vs every 7 months). On price and device support there is nothing between them.

Both are free to download. Interval Timer sells 1 one-off in-app purchase. HT血压计 asks for nothing beyond the download.

HT血压计 ships an update every 7 months, Interval Timer weekly. The most recent releases landed on November 8, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | HT血压计 | Interval Timer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 7 months | **Weekly** |
| Size | 2 MB | 69 MB |
| Requires iOS | **8.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Holtek Semiconductor(China) Inc](https://appshunter.io/developer/1052056181) | [Katsunobu Sunagawa](https://appshunter.io/developer/6795139232) |

## What reviewers say

### HT血压计

[App page](https://appshunter.io/ios/app/ht/id1138527384)

**In-app purchases:** none


### Interval Timer

[App page](https://appshunter.io/ios/app/interval-timer-focus-and-hiit/id6795139230)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Interval Timer Pro | $1.99 | one-time |


## Frequently asked questions

### Is HT血压计 free?

HT血压计 is free to download, with no in-app purchases.

### Is Interval Timer free?

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

### Do HT血压计 or Interval Timer have ads?

Interval Timer shows ads; HT血压计 does not.

### Which is updated more often, HT血压计 or Interval Timer?

HT血压计 ships an update every 7 months, and Interval Timer weekly. Most recently, HT血压计 was updated on November 8, 2026 and Interval Timer on October 31, 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.*