What3words, gives you location in three words should you need assistance or need someone to meet you. Emergency services etc know of it.
17track to keep a eye on any deliveries expected or items sent (i.e.
eBay sales) rather than having to use each delivery companies app or web site.
Store apps if you have their card, these give you offers / discounts;
Morrisons, Co-Op, Nectar (Sainsbury's), M&S. Possibly Tesco's does as well?
Notepad Free - a useful note app
If you are with BT for you home internet, BT wi-fi which will connect your phone to the nearest BT wi-fi, be it someone's home wi-fi or a shop wi-fi. Quite good cycling through a village hearing a cash register noise as something sells on eBay
