# Prisma vs Shelf

The clearest difference is ads: Shelf at none against Prisma's shown. Prisma's advantage is device support (3 vs 1). On price, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Prisma sells 1 in-app purchase, starting at $14.99 per year and Shelf sells 4 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Prisma | Shelf |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | — | Every 2 weeks |
| Size | 55 MB | 74 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Marc Limeres](https://appshunter.io/developer/6793975616) | [Shreyasi Mandal](https://appshunter.io/developer/1876429395) |

## What reviewers say

### Prisma

[App page](https://appshunter.io/ios/app/prisma-game-diary/id6793975614)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Prisma Premium | $14.99 | per year |


### Shelf

[App page](https://appshunter.io/ios/app/shelf-track-games/id6803226964)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Sub | $1.99 | per 7 days |
| Monthly Sub | $4.99 | per month |
| Yearly Sub | $19.99 | per year |
| Lifetime Purchase | $79.99 | one-time |


## Frequently asked questions

### Is Prisma free?

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

### Is Shelf free?

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

### Do Prisma or Shelf have ads?

Prisma shows ads; Shelf 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.*