Use the app "Komposkoini":
•If you have forgotten or lost your real one.
•If you want to pray along with the voice of one of the favorite contemporary Saints.
•If it's too difficult for you to part from your smartphone to pray.

How it works:
•Komposkoini: Slide the screen up or down to start praying.
•Voice: Pray along with Saint Porphyrios, Saint Ephraim Katounakiotis or Ephraim of Arizona.
•Vibration: Optional discrete vibration at every knot or only on the last one.
•Timer: Optionally light a candle and use it as timer.
•Counter: Count how many knots you have slid.

Instructions in the app.