# Compo Owl vs Deep Revision

The clearest difference is in-app purchases: Compo Owl at none against Deep Revision's 1. Compo Owl also leads on iOS requirement (13.4 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. Deep Revision sells 1 one-off in-app purchase. Compo Owl asks for nothing beyond the download.

## The numbers

| Metric | Compo Owl | Deep Revision |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | — |
| Size | 28 MB | 44 MB |
| Requires iOS | **13.4** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [EDUFERN PTE. LTD.](https://appshunter.io/developer/1594811921) | [Nowsath Rifaya](https://appshunter.io/developer/6789596498) |

## What reviewers say

### Compo Owl

[App page](https://appshunter.io/ios/app/compo-owl/id6476132410)

**Features:** macOS Compatibility

**In-app purchases:** none


### Deep Revision

[App page](https://appshunter.io/ios/app/deep-revision-psle-science/id6796186832)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Access Unlock | $6.99 | one-time |


## Frequently asked questions

### Is Compo Owl free?

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

### Is Deep Revision free?

Deep Revision is free to download, with in-app purchases available.

### Do Compo Owl or Deep Revision have ads?

Neither Compo Owl nor Deep Revision 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.*