Useful!
Its easy to use, though the reason I gave it 4/5 was because the user interface could be a bit easier (maybe another screen or button for your current shopping list? or a search?)
Anyway... yes you have to put in your own prices. Of course you do, there isnt a way to tap into the thousands of store databases! I already upgraded to pro (which gives you unlimited list capacity and the ability to add more stores). It does take a while to add your own prices but you can do it over a while as you shop and need things. Im a fan.
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Grocery Genius - Save on Your Groceries