Stefan Malzner · Product designer & founder of Franz
adlk.io
I help founders ship products people stay for. Product advisory from first concept to live users. Founder of Franz: 1m+ downloads, Golden Kitty '16.
Stefan Malzner shares his experience as a product designer and founder. The site includes details of his advisory services and the story behind Franz, a messaging app with over a million downloads. It offers insight into product development from someone who has built successful tools.
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- language
- EN
- here since
- July 2026