4f Checker Products

4f Checker for 4f Studio and 4f Note

Buy checker quota for using 4f Checker. Requires an active 4f Studio or 4f Note  subscription. Get started with the 100 checks quota. Buy the 250 checks quota for more extensive use.

 

 

  

Prices

100 checks    $5

200 checks     $10

500 checks     $25

 

Supporting products

  • 4f Note for editing and checking derivations
  • 4f Studio for editing and checking derivations and as course environment.