Scheduling Apps for Tracking your medication
There are many apps that can be used for the mentioned purpose and for free as well. You can use apps like calendly, woven, or just the Google calendar to set reminders for your patients.
However if you are looking for something more advanced or exclusive you may use the Medisafe Medication Reminder app. It can help manage reminders for several people at the same time by creating account profiles. It has a free iOS and Android version with a 4.5 stars.
Another app to consider for the case is PillPack. This exclusive medication app keep tracks of your medications and even confirms with your doctor. Once they take over your prescription, your medicines are delivered at your door step every week and you may also use their app to set reminders as prescribed.