# Dose Alert vs Rex

The clearest difference is device support: Dose Alert at 3 against Rex's 1. Dose Alert also leads on iOS requirement (14.0.0 vs 26.0). On price, ads and in-app purchases 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 | Dose Alert | Rex |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 days | — |
| Size | 25 MB | 3 MB |
| Requires iOS | **14.0.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Faruk Orman](https://appshunter.io/developer/1754575068) | [SeslynLabs](https://appshunter.io/developer/1591743851) |

## What reviewers say

### Dose Alert

[App page](https://appshunter.io/ios/app/dose-alert/id6633429773)

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

**In-app purchases:** none


### Rex

[App page](https://appshunter.io/ios/app/rex-post-op-medication-timer/id6811731414)

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

**In-app purchases:** none


## Frequently asked questions

### Is Dose Alert free?

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

### Is Rex free?

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

### Do Dose Alert or Rex have ads?

Neither Dose Alert nor Rex shows ads.

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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.*