You can use this PCB Toolkit for iOS to calculate:
- Maximum conductor length / bandwidth (Hammerstad/Jensen & IPC)
- Conductor Impedance (also differential precise calculation by Kirschning/Jansen & IPC calculation)
- Via properties
- Via θ (Thermal resistance), and for a via array (IPC)
- Low Pass Π-filter
- Fusing current (Preece, Brooks & Onderdonk)
- Maximum current or width for a trace (IPC-2521 and IPC-2221)
- Electrical clearance (IPC2221B)
And also a reference to standard house stackups of JLCPCB, PCBWAY and Aisler is included. (JLCPCB updated impedance profiles)
I will add more calculations with updates. (One time buy, so you will get these updates without additional charge later)
The app supports dark mode, portrait & landscape mode and zoomed-in display.