# Thermal Light — user reviews

> 12 indexed App Store user reviews of Thermal Light by Crystal Clear Solutions, rated 2.60/5 from 5 ratings.

- Source: https://appshunter.io/ios/app/thermal-light/id476998738/reviews
- App overview in markdown: https://appshunter.io/ios/app/thermal-light/id476998738.md
- Rating breakdown: 5★ 2 · 4★ 0 · 3★ 0 · 2★ 0 · 1★ 3

## Most critical reviews (10 lowest-rated)

### 1/5 — Dead app please update

*2019-03-19*

I love this app and have used it for years to double check my heat treat oven calibration 

It is no longer compatible with iPhone OS and does not work at all now

If they ever update I’ll change my review to 4 stars

### 1/5 — Refund please

*2019-03-05*

The app won’t even open the camera to calibrate

### 1/5 — Hard to calibrate

*2017-04-29*

I found the app very hard to calibrate and it needs to be calibrated before every use.  Even if the phone goes into standby it needs recalibration.  Effectively making this app useless

### 1/5 — DO NOT BUY

*2013-04-14*

Pice of crap app

### 1/5 — Metal casting furnace

*2012-04-26*

Of all the apps I have bought this one is almost totally useless. To calibrate you are supposed to point it at a light and keep trying until you get the x in the magic spot. So I do this for the low temp then the high. But find out that whatever one you have it calibrated it losses the previous calibration. Oh well I think I can work around that so I calibrate it again for the low temperature. Note: I did this in my garage at night. Then stepping outside to where my metal melting furnace is running. Now the thing says it needs calibrated again. So one more time trying to calibrate this at the operating furnace. I can not get it to calibrate looking down in the glory hole where my crucible is. This even though the crucible is red hot . At this time on a scale of one to ten = 0

### 2/5 — No luck.

*2012-12-27*

I thought this would be handy for HTing knives, but I haven't had any luck with it. I tried calibrating then using it to read a steel that I knew the austentitic temp for, in light and dark, but could not get an accurate read.

### 5/5 — Don't melt your phone

*2012-12-21*

I tried this app out on my ceramic kiln. Worked very well. impressive. Handy backup for my high temperature  thermometer.

### 5/5 — Useful tool for the shop

*2011-11-17*

Well worth the purchase.  Simple to use and very helpful.

### 5/5 — Amazing

*2011-11-16*

Thank you. I used it to measure the temperature of my brick forge.  Seemed right on!

### 5/5 — Good purchase!

*2011-11-13*

Calibration takes some practice but overall it works well. A nice effort for something that would cost a lot of money.

## Most praised reviews (2 highest-rated)

### 5/5 — Works well.

*2011-11-10*

Takes a moment to calibrate, and it will only work with really hot objects (>1000 deg F) but it works surprisingly well. Be sure to read the help for calibration instructions.

### 5/5 — Thermal Light App.

*2011-11-10*

At first, I was unsure as to whether or not it would really work, but it did.  Not only does it work, but it works well!  Very user friendly and self explanatory.  Really great app.  Works exactly as described.  Two thumbs up.

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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 2026-09-08.*