Learn the Islamic ruling on using weekly schedules or trackers for obligatory and Sunnah prayers. Understand why scholars warn against this innovation (bid'ah).
Furthermore, a person might be presented with an action that is originally less virtuous, but it becomes more virtuous in his specific situation for a reason.
For example, if he is occupied with honoring a guest who has come to him rather than praying the regular Sunnah of Dhuhr, his being occupied with that guest is better than the Sunnah prayer.
I advise our youth against using these methods to stimulate worship, because the Prophet (ﷺ) warned against such things when he urged the following of his Sunnah and the Sunnah of the Rightly-Guided Caliphs, and warned against innovations (bid'ah), explaining that every innovation is misguidance—even if its innovators consider it to be good.
There was nothing like this in his guidance, nor in the guidance of his Caliphs and Companions (may Allah be pleased with them).