About
Loyalty, simplified.
What is Summa?
A digital loyalty card for local shops. Customers collect stamps on their phones. No app to download, no account to create. Just scan and collect.
Works in any browser
Instant updates
No signup required
The story
Summa started as a weekend project. Ferdinand wanted a loyalty system for a local cafe – something simple that just worked. Most solutions were overcomplicated, expensive, or both.
So he built one. With Claude as a coding partner, the two designed and developed Summa: a minimal system that does one thing well.
Human creativity. AI collaboration. Real software.
Thank you
To Potzi, soul brother, for suggesting the name "Summa."
To Meli, my wife, for all her support.
© 2026 Ferdinand Salis-Samaden