# WHOeyes vs Clio Daye

The clearest difference is update cadence: Clio Daye at every 11 days against WHOeyes's every 6 months. WHOeyes's advantage is device support (3 vs 1) and iOS requirement (15.6 vs 26.0). On price, ads 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.

WHOeyes ships an update every 6 months, Clio Daye every 11 days. The most recent releases landed on November 3, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | WHOeyes | Clio Daye |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.7 (3 ratings)](https://appshunter.io/ios/app/whoeyes/id6463576815/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 11 days** |
| Monetization | Free | — |
| Size | 18 MB | 4 MB |
| Requires iOS | **15.6** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [World Health Organization](https://appshunter.io/developer/1462736279) | [patrick o'leary](https://appshunter.io/developer/1890064395) |

## What reviewers say

### WHOeyes

[App page](https://appshunter.io/ios/app/whoeyes/id6463576815)

This application offers a free vision screening tool to help identify potential vision impairments. It simulates standard eye chart tests for both distance and near vision, suitable for users aged 8 and above. Regular use can aid in early detection, encouraging timely professional eye care.

**Highlights:** Distance vision test, Near vision test, Simulates eye chart, Suitable for ages 8+, Free to use

**In-app purchases:** none


### Clio Daye

[App page](https://appshunter.io/ios/app/clio-daye/id6761509532)

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

**In-app purchases:** none


## Frequently asked questions

### Is WHOeyes free?

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

### Is Clio Daye free?

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

### Do WHOeyes or Clio Daye have ads?

Neither WHOeyes nor Clio Daye shows ads.

### Which is updated more often, WHOeyes or Clio Daye?

WHOeyes ships an update every 6 months, and Clio Daye every 11 days. Most recently, WHOeyes was updated on November 3, 2026 and Clio Daye on October 25, 2026.

---

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