What's in the "Experience" and "Money" tab of the shop?
Last Day on Earth: Survival Guide
The Experience tab provides different bundles available for you and they provide exp boosts for certain periods. The actions that grant exp in the game will be affected, thus you'll be able to Level up much faster. You can choose boost duration for 1 day, 7 days, and 14 days.
The Money tab provides you with different bundles to get coins. These are used for items that use this currency, or for purchasing Energy in-game for faster travel. Higher amounts provide extra bonus coins as well.