This is the blue shield icon located in the top right corner of the game. This is where you can buy various consumable power ups for increasing your score, as well as upgrading the in-game powerups. Players may also purchase permanent vial and xp boost as well.
Here is a list of all purchasable items in the shop.
(Refills your energy!)
(Provides a +25% score multiplier)
(3x vials collected after defeating an enemy.)
(2x combos for 3 minutes. Combo counter last +3 seconds)
In game powerups
(Clobbers your enemies with the greatest of ease! - provides invulnerability from all damage, destroys most objects, adding +1 Hit to your combo count and giving you 10 vials as if they were enemies)
(Brings all vials in sight right to you! - also works on other power ups and collectible tokens)
(Doubles vials collected and the combo counter!)
(Protects spidey from damage! - Lasts for one impact only)
(Receive 15% extra vials to the total collected during your run)
(Receive 15% more experience with all the spideys on your roster during runs!)