This app connects to your Arduino using Bluetooth and allows you to control output of every pin with just click of buttons.
Steps of Setup:
(1) Connect Bluetooth module (HC-05) to your Arduino.
(2) Pair your phone with Bluetooth module.
(3) Download the code given in the following link.
https://gist.github.com/jagtapraj123/96064df6838ee3cc5756abc0a14868ee
(4) Upload this code in your Arduino.
(5) In the app connect with the Bluetooth module.
(6) Control your Arduino's output with just buttons !!
It's that simple...
Refer to Guide provided in the app.
Thank You !