# Heart Failure [HF] vs Observe.

The clearest difference is update cadence: Heart Failure [HF] at every 2 months against Observe.'s every 8 months. 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.

Heart Failure [HF] ships an update every 2 months, Observe. every 8 months. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Heart Failure [HF] | Observe. |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 8 months |
| Size | 22 MB | 29 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [@Point of Care](https://appshunter.io/developer/916313675) | [SELECT ICT Systems SAE](https://appshunter.io/developer/1780577476) |

## What reviewers say

### Heart Failure [HF]

[App page](https://appshunter.io/ios/app/heart-failure-hf/id1334849414)

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

**In-app purchases:** none


### Observe.

[App page](https://appshunter.io/ios/app/observe/id6738393422)

**In-app purchases:** none


## Frequently asked questions

### Is Heart Failure [HF] free?

Heart Failure [HF] is free to download, with no in-app purchases.

### Is Observe. free?

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

### Do Heart Failure [HF] or Observe. have ads?

Neither Heart Failure [HF] nor Observe. shows ads.

### Which is updated more often, Heart Failure [HF] or Observe.?

Heart Failure [HF] ships an update every 2 months, and Observe. every 8 months. Most recently, Heart Failure [HF] was updated on October 26, 2026 and Observe. on October 27, 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.*