I've made a gamecard installer, which as the name suggets, installs your gamecards directly to your switch!
The app is quite simple, with only 3 options.
Install to the nand.
Install to the sd card.
Exit.
However I spent some time polishing the UI and added some cool features as well.
Support for multi gamecards (gamecards with multiple games inside, press L / R to cycle through them).
Full touchscreen support.
Music support. Simply drop any .mp3's into the app folder /switch/gamecard_installer/ and the app will play these songs at random! (sub folders are supported).
Displays gamecard info such as total size, key generation and app ID.
Displays free nand / sd card memory. This is updated after installing a game.
Cleans up all placeholders on startup. This means if you used an app that failed to install a game and it didn't delete the placeholder after, my app does it for you.
Should anything go wrong, a error code for that specific error will be displayed. This will save time when reporting issues.