EngineCalc

i can't use it because developer don't update the apps

This could be a really good app. It is laid out very well easy to use and switches between Eng/Metric without loosing data. Biggest issue is the app crashes when entering data as you move around the app. Then you are always starting over, I was never able to test the power calculations to see how accurate they are. Disappointed to say the least. I will be looking for updates, hopefully soon. This was test on IOS 12.4.1 September 2019

I tap on various parameters to fill them in and it just keeps crashing. So hasn't proved usable. Also there doesn't seem to be any way to save or share the information so once you leave the app you lose your work. Annoying. iPhone 6s.

Love this ap in terms of concept and ease of use. It's an engine designers dream to have this in their hands. I only wish there was a way to work with metric units. Inches seem to be the only option.

For someone who tunes/tricks cars all day this app is very useful if you are interested in the numbers. It delivers the accurate calculations and my customers want the specs! Great job and much needed for this platform.

Brilliant!