# Number Systems Basics vs PSC Pyq

The clearest difference is in-app purchases: Number Systems Basics at none against PSC Pyq's 8. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. PSC Pyq sells 8 in-app purchases, starting at $1.99 per month. Number Systems Basics asks for nothing beyond the download.

## The numbers

| Metric | Number Systems Basics | PSC Pyq |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 5 days |
| Size | 38 MB | 59 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [AFTW LLC](https://appshunter.io/developer/1886356149) | [Alan Jolly](https://appshunter.io/developer/6785772757) |

## What reviewers say

### Number Systems Basics

[App page](https://appshunter.io/ios/app/number-systems-basics/id6772398351)

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

**In-app purchases:** none


### PSC Pyq

[App page](https://appshunter.io/ios/app/psc-pyq/id6785772755)

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PSC PYQ Pro — Monthly | $1.99 | per month |
| PSC PYQ Pro — Yearly | $19.99 | per year |
| 500 Coins — Starter Pack | $0.99 | one-time |
| 1,200 Coins — Plus Pack | $0.99 | one-time |
| 2,600 Coins — Super Pack | $1.99 | one-time |
| 7,000 Coins — Popular Pack | $4.99 | one-time |
| 15,000 Coins — Premium Pack | $9.99 | one-time |
| 35,000 Coins — Ultra Pack | $19.99 | one-time |


## Frequently asked questions

### Is Number Systems Basics free?

Number Systems Basics is free to download, with no in-app purchases.

### Is PSC Pyq free?

PSC Pyq is free to download, with in-app purchases available.

### Do Number Systems Basics or PSC Pyq have ads?

Neither Number Systems Basics nor PSC Pyq 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.*