BarBlock

BarBlock lets you block selected apps by scanning a barcode, and then unblock them by scanning the same barcode again. BarBlock utilizes barcodes, as you likely already have numerous items with barcodes on hand. This means BarBlock has the benefit of using a physical object to block and unblock apps, to help you avoid distractions. BarBlock has no subscription fees and no external product. All data is stored locally, all functionality is completely local, and BarBlock does not require an internet connection.