Slate: Mark student work

corect.it

About this app

Slate helps teachers get through a stack of marking faster — on your own
phone, with your own judgement, and without an account.

Mark by hand, or let AI draft the feedback for you. Both work. Nothing is
locked behind a subscription, because there isn't one.

FREE AND PRIVATE
• Completely free — no subscription, no in-app purchases, no ads
• No sign-up and no login; install it and start marking
• Classes, pages, scores and comments live only on your device
• We run no servers and hold no account, so there is nothing to delete

SCAN A STACK
• Capture pages with the system document scanner
• Automatic edge detection, straightening and clean-up
• Up to 30 pages in one session
• Or pull in photos you have already taken

MARK IT YOUR WAY
• Write your own feedback, as much or as little as you like
• Tag each point as a strength, an improvement or an error
• Attach marks to individual points and turn the total into a score
• Quote what the student wrote so each comment has context
• Reorder your comments into the order you would say them
• Approve, edit or delete anything before it counts

OPTIONAL AI
• Connect an OpenRouter account if you want AI to draft feedback first
• Choose your model — cheapest, fastest or strongest, with prices shown
• You pay OpenRouter directly for what you use; this app takes no cut
• Never required: every marking feature works without it

SHARE FEEDBACK
• Turn any marked piece into a clean PDF report
• Email it straight to a student or parent with the PDF attached
• Or share it to any app on your phone

SEE HOW THEY ARE DOING
• Per-student averages, best and weakest results, and scores over time
• A breakdown of the strengths, improvements and errors you have noted
• Class overview with the class average and how each student compares

MADE TO FEEL RIGHT
• Built natively for Android — fast, fluid and light on storage
• Light and dark themes, or follow your system setting

WHAT YOU NEED
Nothing, to start marking. An OpenRouter account and an internet
connection are only needed if you want AI to draft feedback.

The app is currently available in English.

Whether you teach primary school or university, Slate helps you give
better feedback and get your evenings back.

Your classroom data stays yours.