"ChantBuddy is a mobile application for chanting. ChantBuddy supports daily Buddhist practice by providing easy-to-use featuresas well as connecting more easily with other practitioners of Nichiren Buddhism. ChantBuddy includes rich content like motivational thoughts and Buddhist resources online."
I would highly recommend using this App. - it is compatible with IOS as well as Android based smartphones.
This daimoku tracking app helps you achieve your daimoku target by enabling you to set specific daimoku targets against each goal. It also provides daily guidance by Sensei Ikeda. Your phone becomes your companion as you chant nam-myoho-renge-kyo instead of being a distraction to be kept away :)