Excellent Work as are all of your apps. I wholeheartedly recommend them all.
Estimated from the grossing charts of Oct 21, 2026 in the 53 countries we track.
From our daily snapshots of every grossing chart.
| Sep 24, 2026 | not in a grossing chart |
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| Oct 21, 2026 | not in a grossing chart |
| Oct 22, 2026 | not in a grossing chart |
Measured from the store, not estimated.
From the latest 112 reviews on the Mexico Google Play, Feb 2, 2019 to Sep 29, 2026: 4% are 1 or 2 stars. Open a theme to read what people wrote.
Only 4 of the latest 112 reviews are 1 or 2 stars, too few to find patterns. Users are mostly happy.
Nothing stands out.
23 of the 4 and 5 star reviews.
★★★★★ as an engineering student this app has been exceptionally useful.
★★★★★ Useful tool but can be improved
★★★★★ I've been a mechanical engineer for 20 years and this app is extremely helpful...absolutely worth the $5
4 of the 4 and 5 star reviews.
★★★★★ kindly update the application in All aspects like the material chapter is not that much effective, some New content about thread , mechanical design, machine related to be updated
★★★★★ Please consider UI scaling, so that everything isn't bunched up at the top and very small.
★★★★★ The only downside I would see is the fact that such a complete and wonderful app has in some parts a rather poor interface (in terms of looks), it seems to be incredible useful and organized, keep it up¡, five stars no…
3 of the 4 and 5 star reviews.
★★★★★ It contains all the necessary information needed in an instant.
★★★★★ It is very handy tool for quick reference, mainly for mechanical engineers.
★★★★★ It's so helpful when I need to remember something with fast time.
3 of the 4 and 5 star reviews.
★★★★★ Worth every penny and more!
★★★★★ Surprised it's free, if I had the brainpower necessary to make an app like this one I'd charge for it.
★★★★★ Excellent app you have created added a great value added things in the app.
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, Mexico Google Play.
Excellent Work as are all of your apps. I wholeheartedly recommend them all.
as an engineering student this app has been exceptionally useful. I showed my lecturers (who are from a varied range of engineering disciplines) and, immediately, looked for the app and purchased it describing it as "the most useful tool in their pocket", high praise indeed!
very useful and helpful
excellent App
good
very good application with a lot of engineering information. kindly update the application in All aspects like the material chapter is not that much effective, some New content about thread , mechanical design, machine related to be updated
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 or short description.
Prices, ranks and reviews are per country. Revenue above is already worldwide.