It’s sometimes hard to believe that the offices a few years back looked drastically different compared to what they are today. In the past, workplaces had various equipment that is now obsolete and replaced with computers. Think fax machines, typewriters, rotary phones, Rolodexes, and dot matrix printers. Even paper shredders and scanners are rarely seen since most offices operate under a paperless policy.

But in the event that you do need to handle physical documents, it would do you best to have digital copies so you will no longer have to juggle between piles of paper and working on your computer. In that case, a scanner will come in handy, and luckily, there’s an app for that. The #1 scanning app on the App Store,  iScanner  helps you scan virtually any document in a snap. A lifetime subscription is on sale for 79 percent off.

iScanner uses AI to make high-quality scans of all sorts of files, from work documents to educational materials to to-do lists, and more. On top of scanning, it also has tools to help you edit, markup, and share them with your colleagues. You can e-sign or add stamps on documents, store your scans as multipage PDF or JPG files, and use them to recognize text from any scannable object with OCR. It’s also capable of editing scans using color correction and noise-removing features.

Need help with math? iScanner has functions in place that can count similar objects and solve math problems and equations. Point your camera at any math expression, whether handwritten or typed, and you’ll get a solution in an instant. You can also measure an object’s length and calculate the total room area in a similar manner. 

“This product is flexible enough to do everything that I need flawlessly! It is nice that that they added other features not commonly found in a document scanner: such as item counter, area estimator and document signer,” says verified purchaser Martin N.

A lifetime subscription to iScanner normally goes for $199, but for a limited time, you can get it  on sale for only $39.99 .