How much are you
overpaying for sports fuel?
Select a product you currently use. We'll show you what the same formula costs to make yourself with bulk ingredients.
DIY cost calculated using the cheapest verified bulk ingredient sources (maltodextrin, fructose, table salt). Same carb content, same ratio, same sodium.
Answer 3 quick questions about your sport and intensity — we'll generate a science-backed recipe for you.
Build My First Mix →Quick-start with science-backed defaults, copy any commercial product, or fully customize your ratio and carb targets.
Open the Builder →Optimize glucose:fructose ratios for SGLT1 + GLUT5 pathways. Visualize transporter saturation in real time.
Learn the science →See cost per gram of carbs, per serving, and per hour. Compare against popular brands like Maurten, SiS, Tailwind, and more.
Compare products →One-click sensible defaults, or dial in your ratio, carb target, and format. Reverse-engineer any commercial product into a DIY recipe.
Open the builder →Built by an engineer in Boulder who got tired of overpaying for salt and sugar. Read the story →
Built on peer-reviewed research