Independent product · EGOHEAD WORKS · iOS
ZEST PUZZLE: from picture puzzle to the kitchen.
An independent iOS product connecting food discovery, visual puzzles and recipes.
Karsten Schwarzkopf · Independent creator and publisher
Product opportunity
A food image can be the beginning of a practical discovery. ZEST PUZZLE makes the image playable, then connects the finished dish with ingredients and cooking instructions.
Product scope
The experience includes food puzzles, ingredient arrangements in Knolling Mode and a cookbook. The current App Store listing is a paid download. Its live listing is the reference for regional pricing and purchase options.
Design decisions visible in the product
A dark surface and warm coral accent give the food images room. Large dish previews make the subject legible. The website adds a playable mouse-and-touch puzzle so visitors can try the interaction before opening the App Store.
A useful acquisition journey
An original Shakshuka recipe offers value to a visitor who arrives through food search. Puzzle tips and the knolling guide create other entry points, with each page linking to the relevant app experience.
What this demonstrates
Interaction design, content modelling and purchase clarity connect within one published app. Screenshots, a working browser puzzle and a complete recipe make the product inspectable before download.
Next measurement
Measure which entry pages generate App Store visits, then compare Apple campaign first-time downloads. A click is an expression of interest; it does not establish that the app was installed.
Product walkthrough, 16 October 2026. No user research results, customer quotes or commercial performance figures are claimed here.