# Observe. vs HemodynamicAID

The clearest difference is ads: Observe. at none against HemodynamicAID's shown. On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

## The numbers

| Metric | Observe. | HemodynamicAID |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 8 months | — |
| Size | 29 MB | 90 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [SELECT ICT Systems SAE](https://appshunter.io/developer/1780577476) | [Cardiology Apps LLC](https://appshunter.io/developer/1639925847) |

## What reviewers say

### Observe.

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

**In-app purchases:** none


### HemodynamicAID

[App page](https://appshunter.io/ios/app/hemodynamicaid/id6755780435)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Observe. free?

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

### Is HemodynamicAID free?

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

### Do Observe. or HemodynamicAID have ads?

HemodynamicAID shows ads; Observe. does not.

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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.*