Neuminds is an inventory app which tracks customers, sales, and receipts. It can backup and import to an SD card, import and export to a desktop-based barcode inventory system, and view realtime reports. It features a convenient user interface.
PartKeepr is an electronic part inventory management software. It helps you to keep track of your available parts and assist you with re-ordering parts. It is designed for hackerspaces with multiple users, but you can also use it to manage your personal electronic part inventory.