# Solar Measurement / PyranometerApp — user reviews

> 9 indexed App Store user reviews of Solar Measurement / PyranometerApp by Hukseflux Thermal Sensors, rated 3.30/5 from 4 ratings.

- Source: https://appshunter.io/ios/app/solar-measurement-pyranometerapp/id449857438/reviews
- App overview in markdown: https://appshunter.io/ios/app/solar-measurement-pyranometerapp/id449857438.md
- Rating breakdown: 5★ 1 · 4★ 1 · 3★ 1 · 2★ 0 · 1★ 1

## Most critical reviews (9 lowest-rated)

### 1/5 — horrible

*2026-03-09*

Didnt work not one bit. Amost killed me!

### 3/5 — No calibration

*2025-10-21*

Every time I attempt to adjust the calibration the program crashes. It seems very helpful and promising too bad. This glitch can't be fixed.

### 4/5 — Good educational tool

*2013-10-15*

I like the app. It can be non-responsive at times but it does the job. I happened to have some guys set up a very accurate solar isolation station outside my office so I could calibrate the app and it gave me a k value of 10.1. I work with PV power systems so it's nice to have a simple way to make measurements. I just have to find an easier way to use the diffuser.

### 5/5 — Saved our @ $es!

*2018-03-03*

Saved the lives and souls of a group of engineering students at a prestigious university when the hardware pyranometers provided for a design class functioned worse than my grandmother’s sense of hearing

### 5/5 — i need one

*2013-06-08*

i have the  app but how do you get the solar thing for it

### 5/5 — Great

*2012-08-09*

I am really happy to find this app. Have not played around with it much yet however I look forward to a sunny day and testing or against solar panels output.

### 5/5 — Amazing software

*2011-11-13*

This is great.. Helping me to calculate PV module for solar farm project.

### 5/5 — Brilliant!

*2011-10-18*

With 3 layers of white paper over the front camera, this application takes the iPhone and converts it into a fantastic little solar irradiance meter.

With my phone and the default calibration constant of 10, the software repeatedly gave results within a couple of percent to that read by a Daystar irradiance meter for irradiance values over 50W/m2.

I was unable to print the diffuser as Windows did not know how to handle the file, but found that cutting a long strip of white paper and wrapping it around the top of the phone 3 times worked really well.

The readings obtained were far better than simply a "rough guide" and were way within the 30% tolerance suggested by the developers. 

This app is a MUST for solar designers/installers. Very well done! Thank you.

### 5/5 — Astounding

*2011-09-27*

It was fun and easy to print the diffuser "lens". Results are surprisingly illustrative. The difference in light level between indoors and outdoors was an eye-opener. A great little app for education.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-22.*