The App Store has an update mechanism but lacks an upgrade mechanism. Let’s first clarify the difference between update and upgrade. An update is a newer version of the same app. An upgrade is the installation of another app, usually more sophisticated, that replaces an existing app.
The good news is that bundles solve the lack of upgrade mechanism. Below are explained the 4 possible ways to upgrade to Weather4D Routing & Navigation using bundles.
Upgrade from Weather4D
Step 1: Update to Weather4D Lite
https://itunes.apple.com/us/app/weather4d-lite/id418723845
Step 2: Upgrade to Weather4D Routing & Navigation
Note: Upgrade happens by purchasing a bundle containing Weather4D Lite and Weather4D Routing & Navigation. As Weather4D was purchased before, the App Store will charge only the difference between the bundle price and the price paid for Weather4D.
Upgrade from Weather4D Lite
Note: Upgrade happens by purchasing a bundle containing Weather4D Lite and Weather4D Routing & Navigation. As Weather4D Lite was purchased before, the App Store will charge only the difference between the bundle price and the price paid for Weather4D Lite.
Upgrade from Weather4D Pro
Step 1: Update to Weather4D Routing
https://itunes.apple.com/us/app/weather4d-routing/id480096611
Step 2: Upgrade to Weather4D Routing & Navigation
Note: Upgrade happens by purchasing a bundle containing Weather4D Routing and Weather4D Routing & Navigation. As Weather4D Pro was purchased before, the App Store will charge only the difference between the bundle price and the price paid for Weather4D Pro.
Upgrade from Weather4D Routing
Note: Upgrade happens by purchasing a bundle containing Weather4D Routing and Weather4D Routing & Navigation. As Weather4D Routing was purchased before, the App Store will charge only the difference between the bundle price and the price paid for Weather4D Routing.
