BIG Launcher takes a smartphone's core functionality and crams it into an interface that's easier on senior citizens and other people with vision problems. BIG Notifications, a new app from the same developer, gives a phone's notifications the same treatment.
While BIG Launcher is simply a homescreen replacement, BIG Notifications doesn't seamlessly replace your notification shade. Instead, the app creates a copy that's written in a bigger font, which you can access through a persistent notification.
The app performs its primary task for free, but you can unlock the full set of features through a $2 in-app purchase. Paid options include TalkBack screen reader support, the ability to adjust the size of text, choice to password protect the app, and more.
BIG Notifications is intended to complement BIG Launcher, but it should go well with any of the similar alternatives out there (or you can run it on top of stock). Just make sure your device, or the person's you're setting this up on, is running Android 4.3 or higher.