In the Tools section of the Shop and the Inventory, you can find items that give hints during Hidden Object scenes and on "Match 3" levels. All of them are activated while you are playing through a location.
You can get Tools as a reward for assembling collections, daily check-ins, meeting Special Event goals and as a reward from a Ship part (flags).
The quantity of every Tool in the Inventory is shown beside each Tool.
You can view a Tool's description in the Description window by tapping its icon.