That's a great point about the pill as a daily reminder -- the control and intervention groups otherwise received healthy lifestyle training every 6 months.
According to the abstract[1], the polypill contains hydrochlorothiazide 12.5 mg, aspirin 81 mg, atorvastatin 20 mg, and either enalapril 5 mg or valsartan 40 mg.
I remember hearing about this app ages ago and spent a few hours searching for it last month. I couldn't remember the name and wound up buying some knockoff. I would have paid $5 if it had shown up in my searches. Thanks for making it free, but thanks even more for reminding me of the name!