To view the Aeronautical map that was released in ForeFlight 8.0, you will need to be on a "Plus" level plan. At this time, that would mean you would need to be subscribed to ForeFlight Basic Plus or ForeFlight Pro Plus.
Existing customers who upgrade to a "Plus" level plan through the ForeFlight website are charged only the pro-rated difference between the "Plus" level plan and the plan they are upgrading from.
To upgrade, go to our Subscription Purchase Page and enter your email address that your ForeFlight account is under on the checkout form and your pro-rated credit for the unused time on your existing plan will be computed and automatically applied.
After your purchase is complete, open ForeFlight on your device and go to MORE > ACCOUNTS and wait about 15 seconds for your plan description to change to indicate that you are now on a "Plus" level plan.
Important: Upgrades made using the in-app purchase button do not have their price pro-rated, but instead have the expiration date extended by a pro-rated amount.