Hi there,
I've created a free app (ads free) that lets you create a remote control for your Arduino, through HTTPS requests. I needed a simple app for my project so I decided to create that app and share it to the community (only for iPhone right now). You can download Trigger app here: https://itunes.apple.com/us/app/trigger-iot-remote-control-http-requests/id1258782307?mt=8
If you like it, you could leave me a comment on the App Store! Thank you. 
No Android!