# SlabMath vs Centrd

The clearest difference is ads: Centrd at none against SlabMath's shown. SlabMath's advantage is device support (3 vs 1) and iOS requirement (14.0 vs 16.0). On price and in-app purchases there is nothing between them.

Both are free to download. SlabMath sells 3 in-app purchases, starting at $4.99 per month and Centrd sells 5 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | SlabMath | Centrd |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/slabmath-predict-and-profit/id6758900601/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | — | Every 10 days |
| Size | 8 MB | 53 MB |
| Requires iOS | **14.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [SLABMATH LLC](https://appshunter.io/developer/1875616748) | [Justin Logan](https://appshunter.io/developer/6788557488) |

## What reviewers say

### SlabMath

[App page](https://appshunter.io/ios/app/slabmath-predict-and-profit/id6758900601)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $4.99 | per month |
| Master | $9.99 | per month |
| Elite | $49.99 | per month |


### Centrd

[App page](https://appshunter.io/ios/app/centrd-card-centering-tool/id6788557486)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Centrd Premium | $3.99 | per month |
| Centrd Premium (Yearly) | $29.99 | per year |
| Supporter | $1.99 | one-time |
| Big supporter | $4.99 | one-time |
| Generous supporter | $9.99 | one-time |


## Frequently asked questions

### Is SlabMath free?

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

### Is Centrd free?

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

### Do SlabMath or Centrd have ads?

SlabMath shows ads; Centrd 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.*