# uSpectrumX vs ams OSRAM AS733x

The clearest difference is iOS requirement: uSpectrumX at 9.0 against ams OSRAM AS733x's 14.4. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

uSpectrumX ships an update every 3 months, ams OSRAM AS733x every 5 weeks. The most recent releases landed on November 2, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | uSpectrumX | ams OSRAM AS733x |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/uspectrumx/id1318581445/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 weeks** |
| Monetization | Free | — |
| Size | 25 MB | 6 MB |
| Requires iOS | **9.0** | 14.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [United Power Research Technology Corporation](https://appshunter.io/developer/1501316337) | [ams AG](https://appshunter.io/developer/1077235619) |

## What reviewers say

### uSpectrumX

[App page](https://appshunter.io/ios/app/uspectrumx/id1318581445)

This application connects wirelessly to a handheld spectrometer to remotely analyze light sources. It displays detailed spectral data, light source information, and allows for data saving and sharing.

**Highlights:** Wireless Wi-Fi connection to spectrometer, Remote light source analysis, Spectrum, CIE1931, CIE1976, CRI, TM-30 diagrams, Detailed light source information (LUX, CCT, CRI), Save and share captured data, Open UPRTek .xls files

**Features:** macOS Compatibility

**In-app purchases:** none


### ams OSRAM AS733x

[App page](https://appshunter.io/ios/app/ams-osram-as733x/id1629043231)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is uSpectrumX free?

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

### Is ams OSRAM AS733x free?

ams OSRAM AS733x is free to download, with no in-app purchases.

### Do uSpectrumX or ams OSRAM AS733x have ads?

Neither uSpectrumX nor ams OSRAM AS733x shows ads.

### Which is updated more often, uSpectrumX or ams OSRAM AS733x?

uSpectrumX ships an update every 3 months, and ams OSRAM AS733x every 5 weeks. Most recently, uSpectrumX was updated on November 2, 2026 and ams OSRAM AS733x on November 7, 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.*