There are many great reasons to upgrade your subscription with Invoice Simple. It is also easy and simple to do so. Here's how:
To upgrade, please go to Settings and hit Upgrade under the Account header. From there, you will be prompted to a custom page (see below). This is the same prompt that you would receive if you visited the Invoice Simple Settings section and tapped on the “Upgrade” tab (see below).
If you scroll down on the page, you will see a list of three different packages and prices that you can select from. Once you've selected, you can tap the “Upgrade now” button.
Afterwards, you’ll be prompted to a new page to confirm payment. Then you’re all set!