And it’s your Mac.

CornerCat downloads, converts, and compresses files on your Mac. This website is a product guide and download page.

Files and links

Downloaded and converted files are saved in the folders you choose. File conversion and compression process your local files on your Mac, without uploading them to a conversion server. Downloading a link contacts the platform serving that media.

Your CornerCat account

If you sign in inside the app, your email and sign-in information are handled through Supabase. Sign-in emails are delivered through Resend. Account and subscription records are used to verify access to Pro.

Payments

Pro subscriptions use Stripe’s hosted checkout and billing portal. Payment details go to Stripe; CornerCat uses subscription status to unlock Pro. Purchase and manage Pro through Settings → Account in the app.

This website

This site does not include advertising trackers or an analytics SDK. Its host processes requests needed to serve the site and app download. The public website does not require an account or sign-in.

Your choices

You can choose save folders, keep the desktop mascot hidden, and sign out of the app. Manage or cancel your subscription using Manage subscription in the Account tab. Signing out or deleting the app does not itself cancel a subscription.

Contact

Questions about CornerCat, your account, or privacy? Email bruno@superfx.co.

Updated 10 October 2026.