"Mananaat traayateiti mantrah" (That whichupliftsby constant repetitionisa Mantra.) "shlokas" although they are often found in single line or Mantras wereoriginally conceived in the Vedas. Most mantras followthewrittenpatternoftwoline even singleword form.Shakti app have lots of Sacred Chants, "Meditation tips", "why need Mantras" , so you can remember "Mantra" easily. You can also set No. of times you want to "Jaap" that Mantra.