Coil Builder app for iPhone and iPad

Would you like to know resistance of Coil you going to build ?
Vape Tool Features:

Coil Calculator: help you calculate perfect coils. Support multi-coil setups, types like Clapton Coil, Parallel Coil, Twisted Coil, and diffrent wire materials, Steam Engine feature.
Sweet Spot Finder: Shows you the wattage sweet spot for your coil setup.
Battery Life: allows you to calculate estimated runtime on your mechanical mods and estimated puffs
Ohm Law calculator: based on ohm law, you will be able to calculate Voltage [V], Resistance [Ω], Current [A], Power [W]
AWG converter: provide easy conversion from AWG to mm