# Comtrade Viewer vs SeismoSense

The clearest difference is iOS requirement: Comtrade Viewer at 15.0 against SeismoSense's 17.0. On price, ads, in-app purchases and device support 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 | Comtrade Viewer | SeismoSense |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | — |
| Size | 5 MB | 4 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Russell Patterson](https://appshunter.io/developer/1723606459) | [Cem Kaya](https://appshunter.io/developer/1857265258) |

## What reviewers say

### Comtrade Viewer

[App page](https://appshunter.io/ios/app/comtrade-viewer/id1469713323)

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

**In-app purchases:** none


### SeismoSense

[App page](https://appshunter.io/ios/app/seismosense/id6760789453)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Comtrade Viewer free?

Comtrade Viewer is free to download, with no in-app purchases.

### Is SeismoSense free?

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

### Do Comtrade Viewer or SeismoSense have ads?

Neither Comtrade Viewer nor SeismoSense 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.*