# NeoSpectra Scan App vs Ullr Rest Client

The clearest difference is ads: NeoSpectra Scan App at none against Ullr Rest Client's shown. Ullr Rest Client's advantage is update cadence (every 4 days vs every 6 weeks). 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.

NeoSpectra Scan App ships an update every 6 weeks, Ullr Rest Client every 4 days. The most recent releases landed on September 10, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | NeoSpectra Scan App | Ullr Rest Client |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/neospectra-scan-app/id1593426865/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Every 4 days** |
| Monetization | Free | — |
| Size | 138 MB | 6 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Si-Ware Systems](https://appshunter.io/developer/1271689638) | [Ivan Serhiienko](https://appshunter.io/developer/1634976120) |

## What reviewers say

### NeoSpectra Scan App

[App page](https://appshunter.io/ios/app/neospectra-scan-app/id1593426865)

This application allows users to scan and analyze samples using a specialized spectrometer to predict their internal properties. It provides insights into scanned materials, requiring both the hardware scanner and a development license.

**Highlights:** Scan samples with NeoSpectra-Scanner, Analyze sample properties, Predict inner material characteristics, Obtain insights from scanned data, Requires development license

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

**In-app purchases:** none


### Ullr Rest Client

[App page](https://appshunter.io/ios/app/ullr-rest-client/id1645200207)

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

**In-app purchases:** none


## Frequently asked questions

### Is NeoSpectra Scan App free?

NeoSpectra Scan App is free to download, with no in-app purchases.

### Is Ullr Rest Client free?

Ullr Rest Client is free to download, with no in-app purchases.

### Do NeoSpectra Scan App or Ullr Rest Client have ads?

Ullr Rest Client shows ads; NeoSpectra Scan App does not.

### Which is updated more often, NeoSpectra Scan App or Ullr Rest Client?

NeoSpectra Scan App ships an update every 6 weeks, and Ullr Rest Client every 4 days. Most recently, NeoSpectra Scan App was updated on September 10, 2026 and Ullr Rest Client on September 24, 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.*