There is a Slimming World app that you shold be able to download. It gives you access to the syns online search option and some recipe ideas, along with other parts of the website.
You can also access the webiste from your phone which fives you the same access as the app, but you've also then got access to the weight loss planner (food diary) too.
I'm surprised you haven't been told by your consultant about the app, they should be promoting it
(assuming you go to an actual group that is)
If you do go to an actual group, there are some small books that handy to carry around with you - Low Syn Snacks and Free Foods (branded)
They're slim books, so they go nicely into a handbag. There is a larger Food Directory also, but it's a much thicker book so it's quite a bit heavier. Although it's still really handy!