A pocket hole jig may not seem as useful as a tablet PC. The iPad tablet or an Android model may have an app for anything, but the devices are remarkably unhelpful when it comes to the actual building of furniture. They do not cut the boards, hammer any nails or even help glue anything together. They do not help with any part of the physical chair building process. Sure, these devices can teach the user how to build a chair or a table, but they do have obvious limitations.
The pocket hole jig is designed to help the user put together tight joints. This often makes it a specialized tool, but it is an indispensable tool for the person who needs to build or repair a table. The tool does not cost as much as a person might expect. Even good Black and Decker model does not set the user back much.