A family of Microsoft relational database management systems designed for ease of use.
You should always develop in the lowest version your users are using. A Access 2007 installation is not likely to be able to open an Access 2013 developed app.
You can try saving the app as an mdb (2003-2003 format) and distribute it that way. Or have the user upgrade. Or install the 2013 Runtime and run it through there.