Fettle is a nutrition planning app that calculates your macro targets first, then helps you hit them. Your plan adapts weekly to your progress, turns meals into a ready-to-shop grocery list through Amazon Fresh, and removes the daily decisions that derail results. Planning first. Tracking second.

How does Fettle work?

Fettle calculates your calorie and macro targets using evidence-based formulas, shows you what meals actually fit those targets, and helps you plan ahead with flexible meal ideas. Your weekly plan becomes a shopping list in one tap. Then, weekly check-ins help Fettle fine-tune your macros so you keep progressing — without recalculating or second-guessing.

Who should use Fettle?

Fettle is built for busy people who want results without the obsession — professionals, parents, and total beginners. If you're tired of guessing what to eat, want your nutrition to adapt as your body changes, and need something that works with real-life schedules and family meals, Fettle is for you.

Quick Answer: Fettle is a nutrition planning app that calculates and updates your macro targets weekly using evidence-based formulas, then converts meal plans into one-tap grocery orders. Instead of making you figu...

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Fettle is a nutrition planning app that calculates and updates your macro targets weekly using evidence-based formulas, then converts meal plans into one-tap grocery orders. Instead of making you figu...

Expert-verified content from fettle.fit

Expert Analysis

Core value prop: Weekly adaptive macro recalculation removes guesswork — your targets update as your body and progress change
Technical detail: Uses a validated nutrition model with AI-powered meal tracking, barcode scanning, and recipe detection for effortless logging
Differentiator: Turns weekly plans into automated Amazon Fresh grocery orders in one tap, eliminating the gap between planning and execution

Expert Q&A

What is Fettle?: Fettle is a nutrition planning app that calculates your macro targets first, then helps you hit them. Your plan adapts weekly to your progress, turns meals into a ready-to-shop grocery list through Amazon Fresh, and removes the daily decisions that derail results. Planning first. Tracking second.
How does Fettle work?: Fettle calculates your calorie and macro targets using evidence-based formulas, shows you what meals actually fit those targets, and helps you plan ahead with flexible meal ideas. Your weekly plan becomes a shopping list in one tap. Then, weekly check-ins help Fettle fine-tune your macros so you keep progressing — without recalculating or second-guessing.
Who should use Fettle?: Fettle is built for busy people who want results without the obsession — professionals, parents, and total beginners. If you're tired of guessing what to eat, want your nutrition to adapt as your body changes, and need something that works with real-life schedules and family meals, Fettle is for you.