# VisionC (ETDRS Visual Acuity) vs Control LITE

The clearest difference is price: Control LITE at Free against VisionC (ETDRS Visual Acuity)'s $79.99. Control LITE also leads on device support (3 vs 1). VisionC (ETDRS Visual Acuity)'s advantage is update cadence (every 8 months vs every 87 months) and iOS requirement (10.0 vs 13.0). On ads and in-app purchases there is nothing between them.

Control LITE is free to download; VisionC (ETDRS Visual Acuity) costs $79.99 up front. Neither carries in-app purchases, so what you see is what you pay.

VisionC (ETDRS Visual Acuity) ships an update every 8 months, Control LITE every 87 months. The most recent releases landed on September 7, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | VisionC (ETDRS Visual Acuity) | Control LITE |
| --- | --- | --- |
| Price | $79.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 8 months** | Every 87 months |
| Size | 9 MB | 2 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Qvision, Departamento de Oftalmología](https://appshunter.io/developer/1602553646) | [Shemesh Health Solutions PTY Ltd](https://appshunter.io/developer/578849338) |

## What reviewers say

### VisionC (ETDRS Visual Acuity)

[App page](https://appshunter.io/ios/app/visionc-etdrs-visual-acuity/id1041393885)

**In-app purchases:** none


### Control LITE

[App page](https://appshunter.io/ios/app/control-lite/id1361955533)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is VisionC (ETDRS Visual Acuity) free?

VisionC (ETDRS Visual Acuity) costs $79.99, with no in-app purchases.

### Is Control LITE free?

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

### Do VisionC (ETDRS Visual Acuity) or Control LITE have ads?

Neither VisionC (ETDRS Visual Acuity) nor Control LITE shows ads.

### Which is updated more often, VisionC (ETDRS Visual Acuity) or Control LITE?

VisionC (ETDRS Visual Acuity) ships an update every 8 months, and Control LITE every 87 months. Most recently, VisionC (ETDRS Visual Acuity) was updated on September 7, 2026 and Control LITE on September 15, 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.*