# uSpectrum PAR vs CAT Smart Dashboard

The clearest difference is iOS requirement: uSpectrum PAR at 9.0 against CAT Smart Dashboard's 14.2. 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.

uSpectrum PAR ships an update every 8 months, CAT Smart Dashboard every 5 months. The most recent releases landed on October 21, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | uSpectrum PAR | CAT Smart Dashboard |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (3 ratings)](https://appshunter.io/ios/app/uspectrum-par/id1466017397/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 5 months** |
| Monetization | Free | — |
| Size | 25 MB | 32 MB |
| Requires iOS | **9.0** | 14.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [United Power Research Technology Corporation](https://appshunter.io/developer/1501316337) | [CIVIC AGROTECH COMPANY LIMITED](https://appshunter.io/developer/1689385909) |

## What reviewers say

### uSpectrum PAR

[App page](https://appshunter.io/ios/app/uspectrum-par/id1466017397)

This application connects wirelessly to a handheld spectral PAR meter, allowing remote analysis and configuration of light sources. It displays detailed spectral data, light source information, and absorption metrics, with options to save and share measurements.

**Highlights:** Wireless Bluetooth connection, Remote light source analysis, Save captured data, Display spectrum and CIE diagrams, View light source metrics (LUX, CCT, CRI), Share measured data via email

**Features:** macOS Compatibility

**In-app purchases:** none


### CAT Smart Dashboard

[App page](https://appshunter.io/ios/app/cat-smart-dashboard/id6449491932)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is uSpectrum PAR free?

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

### Is CAT Smart Dashboard free?

CAT Smart Dashboard is free to download, with no in-app purchases.

### Do uSpectrum PAR or CAT Smart Dashboard have ads?

Neither uSpectrum PAR nor CAT Smart Dashboard shows ads.

### Which is updated more often, uSpectrum PAR or CAT Smart Dashboard?

uSpectrum PAR ships an update every 8 months, and CAT Smart Dashboard every 5 months. Most recently, uSpectrum PAR was updated on October 21, 2026 and CAT Smart Dashboard on October 27, 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.*