# TerraWatch vs GEO Sismos

The clearest difference is device support: GEO Sismos at 3 against TerraWatch's 1. GEO Sismos also leads on iOS requirement (14.0 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. TerraWatch sells 1 one-off in-app purchase and GEO Sismos sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | TerraWatch | GEO Sismos |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | — |
| Size | 1 MB | 31 MB |
| Requires iOS | 17.0 | **14.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Tolga Ulutas](https://appshunter.io/developer/1867266654) | [Jiyan Kilickap](https://appshunter.io/developer/6802060994) |

## What reviewers say

### TerraWatch

[App page](https://appshunter.io/ios/app/terrawatch/id6762412658)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TerraWatch Pro | $2.99 | one-time |


### GEO Sismos

[App page](https://appshunter.io/ios/app/geo-sismos/id6802060992)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| GEO Sismos PRO Aylık | $1.99 | per month |
| GEO Sismos Pro Yıllık | $17.99 | per year |


## Frequently asked questions

### Is TerraWatch free?

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

### Is GEO Sismos free?

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

### Do TerraWatch or GEO Sismos have ads?

Neither TerraWatch nor GEO Sismos 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.*