iPhone Screenshots


Schifter is a calculator for sawing angles, it calculates the setting angles for your mitre saw or your sliding compound mitre saw as well as the required alignment of the workpiece.
(the result field to be used turns green)

This calculation is merely based on you entering the beams’ designated inclination of installation (inclination of the hip rafters) and the number of beams coming together (hip rafters).
With the help of Schifter, you can quickly construct a symmetric roof or other object, fitting perfectly.

Mode of operation:
With your input, namely the inclination and the number of the beams, the sawing angles to be chosen (mitre and inclination) for circular saws, mitre saws, sliding compound mitre saws, power saws with 3D cuts etc. are being calculated.
Owing to largely unchanged settings oft he saw, Schifter enables you to quickly and easily do jack rafter cuts (double angle cuts or double mitre cuts). Such cuts are mainly being used in roof, wood and metal construction.
Saving of time: Thanks to Schifter, you no longer need to painstakingly sketch the sawing angle onto each workpiece. Schifter aims at a quicker completion with a consistently precise sawing result and the workpieces’ better accurancy to fit. Precision: The icosahedron and the tented roof screenshots are meant to demonstrate Schifter’s precision.

The required cutting angles were calculated by Schifter and then cut with a commercially available sliding compound mitre saw.

The consistently precise angles of the sawn parts are a basic prerequisite for the success of a platonic solid. Among other features, a free update of the Schifter App to be released later will contain instructions on how to build an icosahedron, a dodecahedron, an octahedron, a hexahedron and a tetrahedron.

What's New

Version 1.4.0

- Export of fixtures for miter and bevel as pdf files
- Layout improvements
- minor bugfixes and optimizations

Ratings and Reviews

Best compound angle calculator EVER...


I make precision polyhedron shapes from wood and steel profiles and have spent countless hours trying to calculate compound angles to cut with sliding table saws and chop saws. Online calculators have too many fields to enter angles and too many other confusing factors. Even if I CAD modeled the shape and knew the angles I was hard pressed to translate that into the settings on the saw. This app simplifies this process in a big way. I use this app quite often now..

Unbelievable- the only app of its kind

Samson day

I have had many angle finding apps, they were all cumbersome and difficult to use (with too many setting and options). This app is simple and extremely easy to use. I use it almost daily in the shop. Really thank you guys for creating such a wonderful app. 5$ is such a bargain for a tool like this.


Juergen Kilian
29.2 MB
Requires iOS 8.4 or later. Compatible with iPhone, iPad, and iPod touch.
English, German
Age Rating
Rated 4+
© 2013 - 2015 Dr. Jürgen Kilian IT-Consulting & Dirk Gugenberger


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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