Match the following

Tap an item on the left, then the one on the right that goes with it. Pick a set and the number of pairs.

How to play

Choose a subject and a set, for example Q codes or Aerodrome lighting colours, or mix every set in a subject.
Tap an item on the left, then the one on the right that goes with it. A right match locks in green; a wrong one shakes and you try again.
Your fastest round with no mistakes is saved for each set. Use See the full list to revise the whole set.