By upgrading to Hookle Premium, you will get features offered only for Premium subscribers.
To upgrade your plan
Open your Hookle app. Click Profile -> Hookle Premium.
You will now see available Premium plans and prices in your currency. Choose a plan and follow the store instructions to subscribe to Premium.
Your subscription has now been enabled. If you have problems seeing Premium features you can try to restore the purchase.
To modify your current subscription, see the instructions here.
See what's included in the latest version of Hookle Premium.