# Readius vs VetUltrasonic

The clearest difference is device support: Readius at 3 against VetUltrasonic's —. VetUltrasonic's advantage is iOS requirement (12.0 vs 14). On price 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 | Readius | VetUltrasonic |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | Every 2 months | — |
| Size | 418 MB | 12 MB |
| Requires iOS | 14 | **12.0** |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 17+ | 4+ |
| Developer | [Shantou Institute of Ultrasonic Inst. Co., Ltd.](https://appshunter.io/developer/406261738) | [Chengdu Yicheng Electronics Co., Ltd.](https://appshunter.io/developer/1762129645) |

## What reviewers say

### Readius

[App page](https://appshunter.io/ios/app/readius/id6443592437)

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

**In-app purchases:** none


### VetUltrasonic

[App page](https://appshunter.io/ios/app/vetultrasonic/id6624298271)

**In-app purchases:** none


## Frequently asked questions

### Is Readius free?

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

### Is VetUltrasonic free?

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

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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.*