LingerHue

LingerHue is a portrait puzzle game about color, contrast, and visual memory. Each handcrafted experiment gives you a target response. Adjust red, green, blue, and exposure; show the stimulus; remove it; then test the simplified afterimage result. Learn the system one idea at a time across ten carefully ordered levels. Early experiments introduce individual color channels, while later puzzles combine multiple channels, tighter constraints, and different paths to the same result. FEATURES • Ten handcrafted color experiments • Simple RGB and exposure controls • Clear show, remove, and test loop • Optional hints and immediate feedback • Three-star performance results • Local level progress saved on the device • First-level interactive tutorial • Portrait layouts designed for iPhone and iPad • Calm, colorful presentation with sound and haptic settings • No ads, no in-app purchases, and no account required • Offline play with no network connection required LingerHue presents an educational simplified model for play. It is not a medical simulation, diagnostic tool, or vision test.