# Ampere vs VisionStation

The clearest difference is iOS requirement: VisionStation at 13.4 against Ampere's 16.4. 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.

## The numbers

| Metric | Ampere | VisionStation |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 145 months | — |
| Monetization | — | Free |
| Size | 51 MB | 36 MB |
| Requires iOS | 16.4 | **13.4** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Scott Beilfuss](https://appshunter.io/developer/914596608) | [Switt Kongdachalert](https://appshunter.io/developer/741342887) |

## What reviewers say

### Ampere

[App page](https://appshunter.io/ios/app/ampere/id914596604)

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

**In-app purchases:** none


### VisionStation

[App page](https://appshunter.io/ios/app/visionstation/id6504502361)

This app offers a suite of pocket tools for quick vision assessments. It includes a VA chart with customizable viewing distances and optotypes, a pupil and general ruler, and a theoretical color vision test. Designed for general use, it is not intended for diagnostic purposes.

**Highlights:** VA chart with varied viewing distances, Customizable optotypes, Crowding bars, Duochrome test, Pupil and general ruler, Theoretical color vision test

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Ampere free?

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

### Is VisionStation free?

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

### Do Ampere or VisionStation have ads?

Neither Ampere nor VisionStation 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.*