Tupper's self-referential formula
Tupper
Tupper is an iOS app that draws an image using Tupper’s self-referential formula.
You can enter a number or calculate one using the included calculator to see what its image looks like.
Tupper calculator
The calculator is a powerful arbitrary precision calculator, accurate to 10,000 digits.
You can also edit an image and Tupper will give you its number. Or paste one in to retrieve its number.
Tupper image editor
When done you can copy the image or number out and send it to your friends.
See it in action
Privacy policy
Ferra Solutions (Pty) Ltd does not collect any private information using either the Tupper app or this website.
You can contact Ferra using eMail if you require support. If you contact Ferra for support, it will reveal your eMail address to Ferra. No additional private information is required or requested, but Ferra may need some technical information regarding your configuration in order to provide the needed support.
Your eMail address is only used to communicate with you and is not used for any other purpose. Your eMail address is not shared with any outside parties but may be disclosed to law enforcement agencies in response to subpoenas or court orders or other legal requirements. You will be notified in the event if allowed by law.
When you send an eMail requesting support, the mail may end up on a server outside your country of residence. Different laws may apply to your eMail depending on the location of the server.