Support
Need help, found a bug, or have a question? Email debarbanson@debdc.nl and we will get back to you.
Frequently asked questions
Is it a subscription?
No. Cortex is a single one-time purchase. Pay once and every game is unlocked forever. There are no subscriptions, no recurring charges, and no ads.
How do I restore my purchase on a new device?
Open the app, go to the unlock screen, and tap Restore purchases. As long as you are signed in to the same Apple ID or Google account you bought it with, the unlock is restored at no extra cost.
Where is my progress stored?
Your bests, streaks, and settings are saved locally on your device. The app works fully offline and nothing is sent to any server. If your device backs up to iCloud or your Google account, that backup is controlled entirely by you.
Which file types can the Speed Reader import?
TXT, PDF, DOCX, and EPUB. Imported files are read and processed entirely on your device and are never uploaded.
Are Sudoku and Word Search brain training?
No. They are included as classic puzzles for enjoyment, not as cognitive training.
I have another question
Email debarbanson@debdc.nl and we will help.