# GhostFinder vs Seismometer ∞

The clearest difference is price: Seismometer ∞ at Free against GhostFinder's $1.99. GhostFinder's advantage is ads (none vs shown) and update cadence (every 5 days vs every 2 weeks). On in-app purchases there is nothing between them.

Seismometer ∞ is free to download; GhostFinder costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

GhostFinder ships an update every 5 days, Seismometer ∞ every 2 weeks. Both last shipped on September 30, 2026.

## The numbers

| Metric | GhostFinder | Seismometer ∞ |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 5 days** | Every 2 weeks |
| Size | 9 MB | 16 MB |
| Requires iOS | **15.5** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [James Harrison Burt](https://appshunter.io/developer/1578505380) | [辰巳家有限公司](https://appshunter.io/developer/1781943256) |

## What reviewers say

### GhostFinder

[App page](https://appshunter.io/ios/app/ghostfinder/id6760830973)

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

**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 GhostFinder free?

GhostFinder costs $1.99, with no in-app purchases.

### Is Seismometer ∞ free?

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

### Do GhostFinder or Seismometer ∞ have ads?

Seismometer ∞ shows ads; GhostFinder does not.

### Which is updated more often, GhostFinder or Seismometer ∞?

GhostFinder ships an update every 5 days, and Seismometer ∞ every 2 weeks. Most recently, GhostFinder was updated on September 30, 2026 and Seismometer ∞ on September 30, 2026.

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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.*