Balustrade + Stair Calculator 2.0.0 Apk

I am 3d cad designer. I left Slovenia 8 years ago. Traveled around and worked few years as metalworker. I published this app 4 years ago. Is my first android. I don't want to upgrade or change any content on this app. I have more apps in my store and web page. I invested a lot of time to learn new technology for mobile web development and I will publish many free or paid apps in future.

1.Stairs:
a. Calculate data for straight stairs(slope length, angle, rising, going)
b. Calculate data for helical stairs(Tread dimensions)
c. Draw stairs on table
2. Balustrade:
a. Calculate gaps, number of balusters and posts.
b. Calculate start points for balustrade.
c. Calculate start points for balustrade with simple or two different types of balusters
c. Calculate baluster length
3. Project:
a. Corner stair photos of cad drawings and 3d models.
b. How to make expensive balustrade(I made it for John Terry).
c. Estimate cost of project.