If you want to remember recent notifications. Read the ones that have already disappeared from your status bar. This application remembers them for a little more time. The file remembers notifications, grouped by application (including system applications). You can filter / ignore apps (press longer).
(4.1 and up)
Jelly Bean (4.1 - 4.3.1),KitKat (4.4 - 4.4.4),Lollipop (5.0 - 5.1.1),Marshmallow (6.0 - 6.0.1),Nougat (7.0 – 7.1.1),Oreo (8.0-8.1), Pie(9.0)