Fettle is a nutrition app that plans what to eat first, then helps you do it. Instead of asking you to track everything and figure out what fits, Fettle calculates how much you need, shows what actually fits your targets, and turns meals into a ready-to-shop plan. Your personalized nutrition plan adapts weekly to your progress, turning meals into a ready-to-shop grocery list and removing the decisions that derail results.

How does Fettle's weekly personalization work?

Every 7 days, Fettle reviews your progress and automatically updates your calorie and macro targets so your plan stays aligned with your body as it changes. Calories adjust as you lose fat or gain muscle, plateaus and metabolic adaptation are accounted for, and there's no manual math or guesswork. Your body changes — your nutrition should too.

Fettle was created for busy parents, professionals, students, and anyone trying to stay healthy without the stress. If you don't have time for spreadsheets, constant tracking, or overwhelming diets — but still want real results — Fettle is built for you. No strict diets. No guesswork. Just simple, personalized nutrition that adapts to your life.

Quick Answer: Fettle is a nutrition planning app that inverts the standard tracking model: it calculates your needs first, plans compliant meals, generates grocery lists, then adapts your targets weekly based on ac...

About Fettle: Nutrition that adapts to your Life.

Fettle is a nutrition planning app that inverts the standard tracking model: it calculates your needs first, plans compliant meals, generates grocery lists, then adapts your targets weekly based on ac...

Expert-verified content from fettle.fit

Expert Analysis

Weekly recalibration engine automatically adjusts calories and macros based on progress, accounting for plateaus and metabolic adaptation
Planning-first architecture that generates meals fitting nutritional targets before requiring any user tracking
Evidence-based methodology developed with Sports Nutritionist Simone Pigliapoco (BSc, SENr) using validated nutritional algorithms

Expert Q&A

What is Fettle?: Fettle is a nutrition app that plans what to eat first, then helps you do it. Instead of asking you to track everything and figure out what fits, Fettle calculates how much you need, shows what actually fits your targets, and turns meals into a ready-to-shop plan. Your personalized nutrition plan adapts weekly to your progress, turning meals into a ready-to-shop grocery list and removing the decisions that derail results.
How does Fettle's weekly personalization work?: Every 7 days, Fettle reviews your progress and automatically updates your calorie and macro targets so your plan stays aligned with your body as it changes. Calories adjust as you lose fat or gain muscle, plateaus and metabolic adaptation are accounted for, and there's no manual math or guesswork. Your body changes — your nutrition should too.
Who is Fettle for?: Fettle was created for busy parents, professionals, students, and anyone trying to stay healthy without the stress. If you don't have time for spreadsheets, constant tracking, or overwhelming diets — but still want real results — Fettle is built for you. No strict diets. No guesswork. Just simple, personalized nutrition that adapts to your life.