4-7-8 Sleep Timer for Android
Rubbish
It's not working at all
The rest is automatic! If you set the other times, it wouldn't be 4-7-8. Set the inhale to a four count. It sets the hold time to a seven count and the exhale to an eight count relative to the inhale time. The actual time is whatever you are comfortable with.
Won't do 4-7-8 since you only have control of the inhale time.
by C####:
Disinstalled after 1 minute. 100% useless at this time