# Daily HRV vs Cathier

The clearest difference is update cadence: Cathier at every 3 weeks against Daily HRV's every 6 weeks. Daily HRV's advantage is iOS requirement (12.0 vs 18.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Daily HRV ships an update every 6 weeks, Cathier every 3 weeks. The most recent releases landed on October 25, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Daily HRV | Cathier |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Size | 54 MB | 8 MB |
| Requires iOS | **12.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Carlos Pena](https://appshunter.io/developer/973007081) | [Jian Shuo Wang](https://appshunter.io/developer/1207762354) |

## What reviewers say

### Daily HRV

[App page](https://appshunter.io/ios/app/daily-hrv-wellness-data/id6740785743)

**Features:** macOS Compatibility

**In-app purchases:** none


### Cathier

[App page](https://appshunter.io/ios/app/cathier/id6760601647)

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

**In-app purchases:** none


## Frequently asked questions

### Is Daily HRV free?

Daily HRV is free to download, with no in-app purchases.

### Is Cathier free?

Cathier is free to download, with no in-app purchases.

### Do Daily HRV or Cathier have ads?

Neither Daily HRV nor Cathier shows ads.

### Which is updated more often, Daily HRV or Cathier?

Daily HRV ships an update every 6 weeks, and Cathier every 3 weeks. Most recently, Daily HRV was updated on October 25, 2026 and Cathier 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.*