Invision Studio is a Design and Prototype Application by Invision Inc. Invision Studio combines the vector capabilities of Sketch with the flexibility of Adobe Xd in one nifty package. It integrates with Invision's Cloud offerings but remains completely free for offline use.
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Pros
Pro Built-in marketplace
Going beyond tradition, Invision Studio includes a Marketplace in the application itself to install icon toolkits, design toolkits, whenever, whatever you want to.
Pro Integration with invision cloud
Being a Invision product, it tightly knits with Invision's own cloud services. You can upload prototypes from Invision Studio to Invision Cloud.
Pro Sketch imports
Unlike most tools, Invision Studio openly allows imports from sketch files, allowing you to use Sketch with Invision Studio
Pro Offline support
Invision Studio allows offline use, and you can save files offline, even without logging in to an Invision account.
Cons
Con No Linux support
Despite its amazing portfolio, Invision Studio lacks Linux support - a boon for some people but Invision has openly said they will support it when there's demand.
Con Requires Invision login
You'll be required to login to Invision to use Studio for now. But after logging in, you should be able to access Studio without any hiccups.