I've never seen air conditioning control without a special remote control. I constantly lose this remote control, and I have to get up on a chair to press the device. This thing will work with a portable air conditioner, or it can only be connected to a stationary air conditioner installed indoors. I wouldn't mind installing this app on my phone to control Caravan air conditioner if your app can be found in the store for apple products. I use Smart Home on my iPad, so another application will not interfere with my home comfort. Thank you for sharing your Todo app. I'll show it to my friends if I like it.