Estimated from the grossing charts of Oct 23, 2026 in the 53 countries we track, and ratings growth on the App Store.
From our daily snapshots of every grossing chart.
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| Oct 24, 2026 | not in a grossing chart |
Measured from the store, not estimated.
From the latest 19 reviews on the United States App Store, Jan 7, 2012 to Nov 28, 2025: 53% are 1 or 2 stars. Open a theme to read what people wrote.
No common theme in the bad reviews, or they aren't in English.
No feature requests in the latest reviews.
Nothing stands out.
2 of the 4 and 5 star reviews.
★★★★★ Easy to use and simple UI
★★★★★ Very useful and easy to use.
2 of the 4 and 5 star reviews.
★★★★★ I'm a journeyman electrician and the app has been very useful.
★★★★★ Very useful and easy to use.
2 of the 4 and 5 star reviews.
★★★★★ They are free along with voltage and power calculations.
Found by matching words and phrases in the reviews, not read by a person. A review can count toward more than one theme.
Latest reviews, United States App Store.
Ive had the app for a while now and its definitely come a long way and its looking great. I’m a journeyman electrician and the app has been very useful. The dev is also really great at responding to feedback and making improvements. Highly recommend, for less then a coffee its a great deal.
Just trying to calculator multiple resistors in parallel. Thought I used to be able to use this app. Could figure it out now. Went to web based calculator which was much easier.
Best this since sliced bread.
Not sure if it’s a bug but there’s no point to paying the $3.99 fee if I’m getting prompted to pay for it each time I try to use it
This app is not worth the $4. I have been in the electrical trade for over 25 years and can do the math on my own but thought this would make quick work of calcs, but the more I play with it the more I get puzzled. I would not recommend buying this if you live in the US.
I downloaded this application to my Ipad because it looked very useful. I paid the $3.99 immediately Days later It is still locked and I can’t get any response from them via email. Because of their lack of response and the fact that it has ads and offers I don’t consider this a functional product that I can recommend.
Apple Search Ads this app ran in the last 90 days, from Apple's public ad repository.
Apple only publishes ads shown in the EU (EU Digital Services Act), with a 7 day delay. An app that advertises only outside the EU shows nothing here.
Where this app is buying and earning its users. Each link opens pre filtered.
Most repeated terms in the listing. Highlighted ones also appear in the title.
Released Jan 6, 2012. Current version shipped Sep 5, 2026.
Prices, ranks and reviews are per country. Revenue above is already worldwide.
