# LudyMeter vs Pi Block

The clearest difference is in-app purchases: Pi Block at none against LudyMeter's 2. Pi Block also leads on iOS requirement (13.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. LudyMeter sells 2 one-off in-app purchases. Pi Block asks for nothing beyond the download.

## The numbers

| Metric | LudyMeter | Pi Block |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 months | — |
| Size | 6 MB | 26 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ludy Ankas, LLC](https://appshunter.io/developer/1839727404) | [Sampath Vangari](https://appshunter.io/developer/1896723727) |

## What reviewers say

### LudyMeter

[App page](https://appshunter.io/ios/app/ludymeter-sound-level-meter/id6760686850)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| LudyMeter Pro | $14.99 | one-time |
| LudyMeter Safety | $49.99 | one-time |


### Pi Block

[App page](https://appshunter.io/ios/app/pi-block/id6770200824)

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

**In-app purchases:** none


## Frequently asked questions

### Is LudyMeter free?

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

### Is Pi Block free?

Pi Block is free to download, with no in-app purchases.

### Do LudyMeter or Pi Block have ads?

Neither LudyMeter nor Pi Block 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.*