RF and Microwave line calculator includes so far:

1) Rectangular waveguide - cutoff frequency calculations
2) Microstrip line - analysis and synthesis
3) Load impedance calculation
4) Impedance transformation
5) VSWR calculation
6) Impedance matching - single stub matching circuit
7) Impedance matching - L-section matching network.

The app is FREE with NO ADS inside.

Please feel free to contact me ([email protected]) if it doesn't work on your device or you have any suggestion what to add.

This app is made with the use of MIT App Inventor: appinventor.mit.edu