Sweetopia Lab is a color laboratory built around fruit. Select from 10 fruits, blend them in real time, and generate professional palettes ready for your design projects.
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Sweetopia Lab runs its color mixing on a fruit-to-hue mapping system. Each of the 10 fruits in the catalog — apple, orange, banana, strawberry, lemon, kiwi, pineapple, grape, watermelon, and cherry — contributes a distinct base hue derived from its real-world pigmentation. When you add multiple fruits to the laboratory workspace, the algorithm blends those hues using a weighted additive model, producing a single resulting color in real time as each fruit enters the mix.
The result is not a static color swatch. Sweetopia Lab projects the blend into a full professional palette, deriving complementary, analogous, and triadic colors from the primary mix. Each palette export is formatted for direct use in design workflows. Recipes — named combinations of fruits you've saved — let you return to a specific blend without reconstructing it from scratch, and the tag system means your recipe library stays searchable as it grows.
The Stats screen tracks your weekly session frequency in a horizontal bar chart and logs which fruits appear most in your experiments, giving you a data-driven view of your own color preferences over time. The Learn module layers color theory content — hue relationships, contrast ratios, warm and cool palettes — over the fruit metaphor, with quiz checkpoints to reinforce each concept before you move forward.
Drop any combination of the 10 catalogued fruits into the laboratory and watch the resulting color update instantly. No manual hex entry — the hue emerges directly from the fruit mix, making color exploration intuitive and immediate.
Save any experiment as a recipe with a custom name and a set of tags you define. The recipe library is searchable, so as your collection grows beyond a handful of combinations, retrieving a specific blend takes seconds rather than reconstruction from memory.
Sweetopia Lab generates a full harmonious palette from each fruit selection — not just the primary blend color, but the complementary and analogous variants that make the palette usable in real design projects and artwork without further adjustment.
The Stats screen shows a Monday-through-Sunday bar chart of how frequently you've used the lab each day, alongside a running count of your most-used fruits and favorite combinations. Over weeks, the data reveals patterns in your own color preferences.
Interactive lessons inside the app explain hue relationships, color temperature, contrast, and palette harmony using the fruit metaphor as the learning scaffold. Quiz modules follow each lesson to test your understanding before you advance to the next concept.
Sweetopia Lab tracks six milestone badges: First Mix, Recipe Master, Color Artist, Dedicated, Experimenter, and Collector. Locked badges appear in muted gray; earned ones display in full color, creating a visible record of how deeply you've explored the laboratory.
Sweetopia Lab was built and published by Hugo Lambert, an independent iOS developer. The app is listed in the Education category on the App Store, requires iOS 16.6 or later, and is designed exclusively for iPhone. It weighs 36.4 MB and carries an age rating of 4+, making it appropriate for learners of all ages. Price at time of writing: Free.
Free on iPhone. 36.4 MB. No account required. iOS 16.6 or later.
Download Sweetopia Lab — iPhoneiOS 16.6+ required. Rated 4+. Free. Developed by Hugo Lambert. Available on iPhone only.