# uSpectrum PAR vs LumenLeaf

The clearest difference is iOS requirement: uSpectrum PAR at 9.0 against LumenLeaf's 14.0. On price, rating, ratings volume and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 1.0 for uSpectrum PAR against 1.0 for LumenLeaf. Both are backed by a comparable volume of ratings — 3 and 2 respectively.

## The numbers

| Metric | uSpectrum PAR | LumenLeaf |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (3 ratings)](https://appshunter.io/ios/app/uspectrum-par/id1466017397/reviews) | [1.0 (2 ratings)](https://appshunter.io/ios/app/lumenleaf-ppfd-grow-light/id6771374329/reviews) |
| Number of ratings | **3** | 2 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | — |
| Monetization | Free | — |
| Size | 25 MB | 30 MB |
| Requires iOS | **9.0** | 14.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [United Power Research Technology Corporation](https://appshunter.io/developer/1501316337) | [lapnito.cz s.r.o.](https://appshunter.io/developer/1577358577) |

## 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


### LumenLeaf

[App page](https://appshunter.io/ios/app/lumenleaf-ppfd-grow-light/id6771374329)

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

**In-app purchases:** none


## Frequently asked questions

### Is uSpectrum PAR free?

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

### Is LumenLeaf free?

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

### Which has better reviews, uSpectrum PAR or LumenLeaf?

uSpectrum PAR and LumenLeaf are both rated 1.0 out of 5 on the App Store, from 3 and 2 ratings respectively.

### Do uSpectrum PAR or LumenLeaf have ads?

Neither uSpectrum PAR nor LumenLeaf shows ads.

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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.*