# QuakeSafe Dam vs Seismometer ∞

The clearest difference is ads: QuakeSafe Dam 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 | QuakeSafe Dam | Seismometer ∞ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/quakesafe-dam/id6739592421/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | — | Every 2 weeks |
| Monetization | Free | — |
| Size | 65 MB | 16 MB |
| Requires iOS | 18.2 | **17.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [John Nguyen](https://appshunter.io/developer/1573137293) | [辰巳家有限公司](https://appshunter.io/developer/1781943256) |

## What reviewers say

### QuakeSafe Dam

[App page](https://appshunter.io/ios/app/quakesafe-dam/id6739592421)

This app offers real-time monitoring of California dams and assesses their earthquake vulnerability. It provides engineers, residents, and safety planners with accurate data on seismic events and dam conditions to ensure preparedness.

**Highlights:** Interactive map of dams and seismic events, Detailed dam profiles, Seismic impact assessments, Customizable alerts, Reliable data sources (USGS, NID)

**Features:** macOS Compatibility

**In-app purchases:** none


### Seismometer ∞

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

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

**In-app purchases:** none


## Frequently asked questions

### Is QuakeSafe Dam free?

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

### Is Seismometer ∞ free?

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

### Do QuakeSafe Dam or Seismometer ∞ have ads?

Seismometer ∞ shows ads; QuakeSafe Dam 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.*