Android: Not sure whether the manufacturer warranty still applies to a gadget you purchased, or can't remember when you bought something? Warranty Tracker makes it much easier to track those details.
In addition to being able to scan for items by barcode and taking pictures of your receipts, you can enter the warranty deadline for your product and elect to receive notifications when that day is approaching. There is also space to enter serial numbers, model numbers, and even rebate deadlines with their own set of notifications. Under Australian consumer law, your basic rights aren't limited to a fixed period, but knowing when additional manufacturer warranties expire can still be useful.