# PSLE Primary vs Deep Revision

The clearest difference is in-app purchases: PSLE Primary at none against Deep Revision's 1. Deep Revision's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

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

## The numbers

| Metric | PSLE Primary | Deep Revision |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | — |
| Size | 29 MB | 44 MB |
| Requires iOS | **14.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kian Lee](https://appshunter.io/developer/997242579) | [Nowsath Rifaya](https://appshunter.io/developer/6789596498) |

## What reviewers say

### PSLE Primary

[App page](https://appshunter.io/ios/app/psle-primary/id1668513774)

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

**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 PSLE Primary free?

PSLE Primary 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 PSLE Primary or Deep Revision have ads?

PSLE Primary shows ads; Deep Revision does not.

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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.*