# VisionC (ETDRS Visual Acuity) vs Keraring Planner

The clearest difference is price: Keraring Planner at Free against VisionC (ETDRS Visual Acuity)'s $79.99. Keraring Planner also leads on update cadence (every 5 weeks vs every 8 months) and device support (3 vs 1). VisionC (ETDRS Visual Acuity)'s advantage is iOS requirement (10.0 vs 13.0). On ads and in-app purchases there is nothing between them.

Keraring Planner 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, Keraring Planner every 5 weeks. The most recent releases landed on October 12, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | VisionC (ETDRS Visual Acuity) | Keraring Planner |
| --- | --- | --- |
| Price | $79.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 5 weeks** |
| Size | 9 MB | 30 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Qvision, Departamento de Oftalmología](https://appshunter.io/developer/1602553646) | [Claudio Curi](https://appshunter.io/developer/1090903198) |

## What reviewers say

### VisionC (ETDRS Visual Acuity)

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

**In-app purchases:** none


### Keraring Planner

[App page](https://appshunter.io/ios/app/keraring-planner/id6504206835)

**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 Keraring Planner free?

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

### Do VisionC (ETDRS Visual Acuity) or Keraring Planner have ads?

Neither VisionC (ETDRS Visual Acuity) nor Keraring Planner shows ads.

### Which is updated more often, VisionC (ETDRS Visual Acuity) or Keraring Planner?

VisionC (ETDRS Visual Acuity) ships an update every 8 months, and Keraring Planner every 5 weeks. Most recently, VisionC (ETDRS Visual Acuity) was updated on October 12, 2026 and Keraring Planner on October 10, 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.*