Zero-runtime utilities for daily work.
Single-purpose calculators and simulations running purely in your browser. No trackers, no frameworks, zero latency.
Baker's Percentage & True Hydration Calculator
Precise dough formulas by baker's percentage, with true-hydration math for sourdough starters.
Color Vision & Acuity Test
30-level progressive color discrimination test — find the odd tile as the HSL delta shrinks to near-invisible thresholds.
Color Vision & Acuity Test II (Radar)
Test discrimination across 6 primary & secondary colors (Red, Yellow, Blue, Orange, Purple, Green) with an interactive radar profile.
Color Memory & Matching Test
Memorize a color flashed for 5 seconds, then recall and match it precisely on an interactive color wheel across 5 rounds.
Vector Defense: 2D TD Deckbuilder
Retro vector arcade Tower Defense inspired by 1970s Asteroids. Play cards to stack tower modifiers and lay terrain to defend the Wall.
Gamut Masking Tool for Visual Artists
Shape geometric color masks over an OKLCH color wheel to harmonize artwork with 100% perceptual luminance (value) preservation.
Minimalist Interval Timer
Zero-drift workout timer for HIIT, Tabata, Boxing, and EMOM. Uses inline Web Worker timing, Screen Wake Lock, and high-visibility 3-5m typography.
Binary Decision Tournament
Eliminate decision paralysis with rapid 1v1 duels. Crown a single #1 priority in N-1 clicks or sort the entire list via interactive merge sort.
MonPlanningRepas: Menus & Recettes
Organisez vos recettes, planifiez automatiquement 14 repas hebdomadaires équilibrés avec verrouillage de créneaux et synchronisation Cloudflare D1 SQL.
MonCarnetMuscu: Séances & Coach IA
Carnet de musculation ultra-fluide pour la salle : répétitions et charges précédentes en filigrane, chrono de repos automatique, équilibre musculaire et coach IA Gemini.
Papa Raconte: Livres Audio Illustrés
Photographiez les livres illustrés de votre enfant page par page, enregistrez votre voix sur mobile et lancez une lecture automatique en Mode Enfant.
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