# IRIS (Offline GPT) vs DoomStudy

The clearest difference is device support: DoomStudy at 3 against IRIS (Offline GPT)'s 1. DoomStudy also leads on iOS requirement (15.1 vs 17.6). 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.

## The numbers

| Metric | IRIS (Offline GPT) | DoomStudy |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Weekly |
| Size | 34 MB | 90 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Nervesparks Private limited](https://appshunter.io/developer/1834647354) | [Jalal Fatouaki](https://appshunter.io/developer/1855953539) |

## What reviewers say

### IRIS (Offline GPT)

[App page](https://appshunter.io/ios/app/iris-offline-gpt/id6751331448)

**Features:** macOS Compatibility

**In-app purchases:** none


### DoomStudy

[App page](https://appshunter.io/ios/app/doomstudy-scroll-to-learn/id6755923722)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is IRIS (Offline GPT) free?

IRIS (Offline GPT) is free to download, with no in-app purchases.

### Is DoomStudy free?

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

### Do IRIS (Offline GPT) or DoomStudy have ads?

Neither IRIS (Offline GPT) nor DoomStudy shows ads.

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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.*