Reviews of Resistor Scanner

By: MhTechDev App

List of user reviews and ratings for Resistor Scanner

Total ratings

2.58 (Rating count: 2,434)

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Review summary

The app has a promising idea and can aid colorblind users with resistor value identification, aided by zoom/exposure controls and batch readings. However, reliability is a major drawback: frequent crashes, inconsistent results, and camera/lighting sensitivity (glare, white balance) lead to misread colors. Calibration and stability improvements are needed for practical use across devices and environments.

Pros

Helpful identification of resistor values, especially useful for colorblind users.
Zoom and exposure controls help readability and accuracy when lighting is good.
Can read multiple resistors at once and show values for all.
Strong concept and generally useful/relatively accurate in favorable conditions.

Cons

Frequent crashes and instability; sometimes won't run at all.
Highly lighting-dependent; glare, flash glare, and white balance issues degrade results.
Colors detected incorrectly (e.g., brown read as black) and no calibration.
Results vary across devices/backgrounds; inconsistent across scenarios.
Background and lighting requirements make it unreliable in typical conditions.

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User Reviews

Recent rating average: 2.70

All time rating average: 2.58

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47% (32)

Date	Author	Comment
2026-03-31	Já*****	This is an amazing idea but sadly it does not display correct values, gave it a few tries on a black non-reflective background, but in it's current form it's really unreliable. 2 stars for the idea and work the author put in. I'd LOVE to see it work as intended. Keep up the good work :)
This is an amazing idea but sadly it does not display correct values, gave it a few tries on a black non-reflective background, but in it's current form it's really unreliable. 2 stars for the idea and work the author put in. I'd LOVE to see it work as intended. Keep up the good work :)
2026-03-19	As*****	good app
good app
2026-02-15	Co*****	Overall it seems to work but takes very specific lighting. using an S22+ the flash creates glare that confuses it. a sheet of black EVA foam, construction paper or felt reduces the glare and improves the contrast. link to upgrade and remove ads would not work. Just got it so I don't yet know about long term. 100ohm vs 220ohm detection worked mostly if the light was good and the zoom was larger. The more focused zoom the better so far. that makes sense as it has more pixels to work with
Overall it seems to work but takes very specific lighting. using an S22+ the flash creates glare that confuses it. a sheet of black EVA foam, construction paper or felt reduces the glare and improves the contrast. link to upgrade and remove ads would not work. Just got it so I don't yet know about long term. 100ohm vs 220ohm detection worked mostly if the light was good and the zoom was larger. The more focused zoom the better so far. that makes sense as it has more pixels to work with
2026-02-15	Ma*****	able to take pics... Letters are too small. unable to show results...looks waste app
able to take pics... Letters are too small. unable to show results...looks waste app
2025-12-20	Sa*****	Fake app.. Not working
Fake app.. Not working
2025-12-07	Da*****	Excellent app... really useful and relatively accurate
Excellent app... really useful and relatively accurate
2025-10-06	Se*****	No single correct answer. The program is nice, it is even trying to read many at once, and is trying to recognize the color bands. You can put a 10-pack, and it will start to show values for all. I tried with a few packs. Unfortunately, among those different values, and it can be "a choice" with as many as 3 to 4 values for a pack of identical 10 resistors, I never saw a correct result, tested on black, white, grey or brown background.
No single correct answer. The program is nice, it is even trying to read many at once, and is trying to recognize the color bands. You can put a 10-pack, and it will start to show values for all. I tried with a few packs. Unfortunately, among those different values, and it can be "a choice" with as many as 3 to 4 values for a pack of identical 10 resistors, I never saw a correct result, tested on black, white, grey or brown background.
2025-09-11	To*****	Was going to buy the pro version. The app continuously crashes. Works great makes identifying resistors easier until it crashes then you have to go back and set everything back up again :(
Was going to buy the pro version. The app continuously crashes. Works great makes identifying resistors easier until it crashes then you have to go back and set everything back up again :(
2025-08-29	St*****	won't even run
won't even run
2025-08-18	Ro*****	Liked the app. 8 out of 10 times it shows the correct resistance value from the colour codes. Helpful for those who are colourblind or sometimes even colours printed on some resistors have slightly different hues. I mainly liked the zoom and exposure sliders provided on the app screen. It would be nice if colour hue adjustment could be added for using under yellowish fluorescent light. Although the app is too big in bytes it's good enough.
Liked the app. 8 out of 10 times it shows the correct resistance value from the colour codes. Helpful for those who are colourblind or sometimes even colours printed on some resistors have slightly different hues. I mainly liked the zoom and exposure sliders provided on the app screen. It would be nice if colour hue adjustment could be added for using under yellowish fluorescent light. Although the app is too big in bytes it's good enough.