# VisionC (ETDRS Visual Acuity) vs Chart2020 Lite

The clearest difference is price: Chart2020 Lite at Free against VisionC (ETDRS Visual Acuity)'s $79.99. Chart2020 Lite also leads on update cadence (every 3 months vs every 8 months). VisionC (ETDRS Visual Acuity)'s advantage is in-app purchases (none vs 4) and iOS requirement (10.0 vs 12.0). On ads and device support there is nothing between them.

Chart2020 Lite is free to download; VisionC (ETDRS Visual Acuity) costs $79.99 up front. Chart2020 Lite sells 4 in-app purchases, starting at $7.99 per 7 days. VisionC (ETDRS Visual Acuity) asks for nothing beyond the download.

VisionC (ETDRS Visual Acuity) ships an update every 8 months, Chart2020 Lite every 3 months. The most recent releases landed on October 12, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | VisionC (ETDRS Visual Acuity) | Chart2020 Lite |
| --- | --- | --- |
| Price | $79.99 | **Free** |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/chart2020-lite/id1364522406/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 3 months** |
| Monetization | — | Subscription |
| Size | 9 MB | 58 MB |
| Requires iOS | **10.0** | 12.0 |
| Devices | iPad | iPad |
| 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


### Chart2020 Lite

[App page](https://appshunter.io/ios/app/chart2020-lite/id1364522406)

This app provides a digital eye chart with various testing options, including different chart types and masking features. It offers remote control capabilities via a companion iPhone app or an optional Bluetooth remote, making it suitable for professional and home use.

**Highlights:** Multiple chart types (Sloan/Snellen, Balancing, Astigmatism), Customizable testing distance, Variety of letter/number/symbol sets, Masking and randomization options, Companion iPhone app for remote control, Optional Bluetooth remote control

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $7.99 | per 7 days |
| Weekly Subscription | $7.99 | per 7 days |
| Monthly Subscription | $19.99 | per month |
| Yearly Subscription | $149.99 | per year |


## Frequently asked questions

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

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

### Is Chart2020 Lite free?

Chart2020 Lite is free to download, with in-app purchases available.

### Do VisionC (ETDRS Visual Acuity) or Chart2020 Lite have ads?

Neither VisionC (ETDRS Visual Acuity) nor Chart2020 Lite shows ads.

### Which is updated more often, VisionC (ETDRS Visual Acuity) or Chart2020 Lite?

VisionC (ETDRS Visual Acuity) ships an update every 8 months, and Chart2020 Lite every 3 months. Most recently, VisionC (ETDRS Visual Acuity) was updated on October 12, 2026 and Chart2020 Lite on October 14, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*