If your android device has a strong vibration motor, this app can create a nice way to relax from a stressful day.

Various Massage Modes:

Smooth (default)

Oscillate – Slow, Regular and Fast

Rhythm Modes:

Groove

Waterfall

Pump

River Rapids

Ocean  Waves

The Chops

Spring Winds

G-Massage also includes a timer to stop the massage after a preset amount of time.

Helpful instructions/recommendations are included with the app.