# Polygraf vs E

The clearest difference is update cadence: E at every 10 days against Polygraf's every 6 months. Polygraf's advantage is iOS requirement (9.0 vs 13.0). On price, ads, in-app purchases and device support there is nothing between them.

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

Polygraf ships an update every 6 months, E every 10 days. The most recent releases landed on October 2, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Polygraf | E |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.8 (6 ratings)](https://appshunter.io/ios/app/e-uhd/id6749571127/reviews)** |
| Number of ratings | — | **6** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 10 days** |
| Monetization | — | Free |
| Size | 40 MB | 29 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Masaryk University](https://appshunter.io/developer/443178424) | [Kashif Aziz](https://appshunter.io/developer/1511615320) |

## What reviewers say

### Polygraf

[App page](https://appshunter.io/ios/app/polygraf/id443178421)

**Features:** macOS Compatibility

**In-app purchases:** none


### E

[App page](https://appshunter.io/ios/app/e-uhd/id6749571127)

This app provides resources and information specifically for UHD students in Iraq. It aims to support their academic journey with relevant educational content.

**Highlights:** UHD student resources, Educational content, Information for Iraqi students, Academic support

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

**In-app purchases:** none


## Frequently asked questions

### Is Polygraf free?

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

### Is E free?

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

### Do Polygraf or E have ads?

Neither Polygraf nor E shows ads.

### Which is updated more often, Polygraf or E?

Polygraf ships an update every 6 months, and E every 10 days. Most recently, Polygraf was updated on October 2, 2026 and E on October 6, 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.*