Almost everyone's been there at some point or another: after lugging armfuls of newly purchased groceries home, you put everything away only to realize you've forgotten the one item you actually needed. A minor problem, maybe, but near-infuriating, nonetheless. Fortunately, Shopster can help.
With the help of geotracking, Shopster takes note of both what you like to buy and where you like to buy it. After checking off an item you've purchased—just as you would with any other listing app—Shopster remembers where you were when you bought that particular item. So the next time you happen to be strolling nearby, the app will shoot off an alarm, reminding you its time for a restock. You'll never come (unwittingly) emptyhanded again.
Unlike other listing apps, Shopster really only organizes one aspect of your life—which means it does that one thing very, very well. This extreme focus also means the app is pretty simple to use. There's only a few screens to flip through, and once you've made a few purchases, the app pretty much works entirely on its own. If you're someone with impecable recall, it's easy to see how the reminders would be more annoying than anything else. But if you're the type of person with a lot on their mind, this could be a major time saver.