Do I have to track inventory on products to use the app?

It is possible to toggle the availability of the product instead of setting the inventory levels on each product:

If your store is using this method to make products purchasable or not purchasable vs. out of stock by inventory levels. There is a setting in the app that needs to change.

Many stores use this product setting as an archive and do not want the registration form to display and other stores use it as an out of stock indicator. We created a setting so the app can accommodate both.

On Settings -> Registration Form page of the app, change the setting for Show form if not purchasable to enabled and then click the generate script button to save the change to the store.