# Global Seismic Data vs Oroville 311

The clearest difference is iOS requirement: Oroville 311 at 15.1 against Global Seismic Data'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 | Global Seismic Data | Oroville 311 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | — |
| Size | 26 MB | 45 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Global Seismic Data NZ Limited](https://appshunter.io/developer/1469156236) | [City of Oroville Inc.](https://appshunter.io/developer/1840491767) |

## What reviewers say

### Global Seismic Data

[App page](https://appshunter.io/ios/app/global-seismic-data/id1469156237)

**Features:** macOS Compatibility

**In-app purchases:** none


### Oroville 311

[App page](https://appshunter.io/ios/app/oroville-311/id6752671202)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Global Seismic Data free?

Global Seismic Data is free to download, with no in-app purchases.

### Is Oroville 311 free?

Oroville 311 is free to download, with no in-app purchases.

### Do Global Seismic Data or Oroville 311 have ads?

Neither Global Seismic Data nor Oroville 311 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.*