# Seismometer ∞ vs PhoneCheck Pro

The clearest difference is ads: PhoneCheck Pro at none against Seismometer ∞'s shown. On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Seismometer ∞ | PhoneCheck Pro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | — |
| Size | 16 MB | 3 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [辰巳家有限公司](https://appshunter.io/developer/1781943256) | [胜辉 韩](https://appshunter.io/developer/1862178321) |

## What reviewers say

### Seismometer ∞

[App page](https://appshunter.io/ios/app/seismometer/id6761700650)

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

**In-app purchases:** none


### PhoneCheck Pro

[App page](https://appshunter.io/ios/app/phonecheck-pro/id6765871402)

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

**In-app purchases:** none


## Frequently asked questions

### Is Seismometer ∞ free?

Seismometer ∞ is free to download, with no in-app purchases.

### Is PhoneCheck Pro free?

PhoneCheck Pro is free to download, with no in-app purchases.

### Do Seismometer ∞ or PhoneCheck Pro have ads?

Seismometer ∞ shows ads; PhoneCheck Pro 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.*