Note: This inventory app has been discontinued and will be shortly retired. Please follow this link to learn about the new inventory app.
The Bevager and Foodager "Inventory" apps (available on the iOS App and Android Google Play Stores) allow you to start an audit and enter your counts. They also have bar code scanning abilities using the camera on your device.
Please keep in mind that you will not be able to close the audit through this app, you should do that by going to Craftable and selecting "Close Audit". Please see the article titled "Taking an Audit" for more details on audit best practices.