# Eyedid vs Moonlight

The clearest difference is update cadence: Moonlight at every 10 days against Eyedid's every 3 weeks. Eyedid's advantage is iOS requirement (13.0 vs 15.1). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Eyedid ships an update every 3 weeks, Moonlight every 10 days. The most recent releases landed on August 12, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Eyedid | Moonlight |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/eyedid/id6446265489/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | — | 64.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 10 days** |
| Monetization | Free | Free |
| Size | 84 MB | 66 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [VisualCamp Co.,Ltd](https://appshunter.io/developer/1410567346) | [Corca, Inc.](https://appshunter.io/developer/1711708611) |

## What reviewers say

### Eyedid

[App page](https://appshunter.io/ios/app/eyedid/id6446265489)

This app uses advanced mobile eye-tracking technology to analyze user engagement with digital designs. It allows for effortless experiment initiation, real-time data capture, and comprehensive web-based tools for actionable insights. Ideal for UX/UI designers and creatives seeking to understand visual interaction.

**Highlights:** Mobile eye-tracking technology, UX/UI and creative analysis, Effortless experiment initiation, Real-time engagement data capture, Web-based tools for insights, Visual storytelling enhancement

**In-app purchases:** none


### Moonlight

[App page](https://appshunter.io/ios/app/moonlight-ai-pdf-reader/id6738034562)

Streamline your research by integrating AI tools directly into your PDF documents. Get instant explanations, translations, and citation details without leaving your reading interface.

**Highlights:** AI-powered explanations, Document translation, Citation retrieval, Integrated research tools, Seamless PDF interaction

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Eyedid free?

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

### Is Moonlight free?

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

### Do Eyedid or Moonlight have ads?

Neither Eyedid nor Moonlight shows ads.

### Which is updated more often, Eyedid or Moonlight?

Eyedid ships an update every 3 weeks, and Moonlight every 10 days. Most recently, Eyedid was updated on August 12, 2026 and Moonlight on September 18, 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.*