# SpectraScan vs Necrometer II

The clearest difference is price: SpectraScan at Free against Necrometer II's $0.99. Necrometer II's advantage is in-app purchases (none vs 1) and update cadence (every 2 weeks vs every 5 months). On ads there is nothing between them.

SpectraScan is free to download; Necrometer II costs $0.99 up front. SpectraScan sells 1 one-off in-app purchase. Necrometer II asks for nothing beyond the download.

SpectraScan ships an update every 5 months, Necrometer II every 2 weeks. Both last shipped on October 31, 2026.

## The numbers

| Metric | SpectraScan | Necrometer II |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 weeks** |
| Size | 3 MB | 8 MB |
| Requires iOS | 18.6 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 9+ |
| Developer | [Gregory Hogan](https://appshunter.io/developer/1835199521) | [michael smith](https://appshunter.io/developer/6784636236) |

## What reviewers say

### SpectraScan

[App page](https://appshunter.io/ios/app/spectrascan-ghost-detector/id6761769203)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Spectra-Scan Unlocked | $4.99 | one-time |


### Necrometer II

[App page](https://appshunter.io/ios/app/necrometer-ii/id6784636234)

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

**In-app purchases:** none


## Frequently asked questions

### Is SpectraScan free?

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

### Is Necrometer II free?

Necrometer II costs $0.99, with no in-app purchases.

### Do SpectraScan or Necrometer II have ads?

Neither SpectraScan nor Necrometer II shows ads.

### Which is updated more often, SpectraScan or Necrometer II?

SpectraScan ships an update every 5 months, and Necrometer II every 2 weeks. Most recently, SpectraScan was updated on October 31, 2026 and Necrometer II on October 31, 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.*