May I suggest that - kindly include checklist for sunnah prayer wudhu', sunnah prayer tahiyatul masjid (if the person went to masjid/jamaah) and sunnah prayer rawatib.
The mentioned solah prayers can be performed for during each compulsory prayer.
As a Muslim - I would like to express my thanks towards the creation of this application. It's very helpful for me to track my prayers. This especially when we lived in the hectic world.
Only Allah knows how to repay your deeds and helps to Muslim brothers and sister.