HOW IT WORKS
Guidance first. Tracking second.
Most apps ask you to log everything, then leave the hard decisions to you. Fettle works the other way round: it decides upfront, adapts weekly, and uses tracking only to refine.
HOW IT WORKS
Guidance first. Tracking second.
Most apps ask you to log everything, then leave the hard decisions to you. Fettle works the other way round: it decides upfront, adapts weekly, and uses tracking only to refine.
HOW IT WORKS
Guidance first. Tracking second.
Most apps ask you to log everything, then leave the hard decisions to you. Fettle works the other way round: it decides upfront, adapts weekly, and uses tracking only to refine.
Targets update weekly — with the reason shown
Pillar one
How much to eat — calculated, then kept current.
Fettle sets your calorie and macro targets from evidence-based formulas the day you start. Then — unlike a static calculator — it re-derives them every week from your actual trend. You start with clarity and stay with accuracy.
Targets update weekly — with the reason shown
Pillar one
How much to eat — calculated, then kept current.
Fettle sets your calorie and macro targets from evidence-based formulas the day you start. Then — unlike a static calculator — it re-derives them every week from your actual trend. You start with clarity and stay with accuracy.
Targets update weekly — with the reason shown
Pillar one
How much to eat — calculated, then kept current.
Fettle sets your calorie and macro targets from evidence-based formulas the day you start. Then — unlike a static calculator — it re-derives them every week from your actual trend. You start with clarity and stay with accuracy.
Meals matched to targets — not the other way round
Pillar Two
What fits — meals matched to your targets.
You don't reverse-engineer your day from a calorie budget. Fettle proposes meals and portions that already fit your goals, your preferences and your cuisine — without rigid rules or food anxiety.
Meals matched to targets — not the other way round
Pillar Two
What fits — meals matched to your targets.
You don't reverse-engineer your day from a calorie budget. Fettle proposes meals and portions that already fit your goals, your preferences and your cuisine — without rigid rules or food anxiety.
Meals matched to targets — not the other way round
Pillar Two
What fits — meals matched to your targets.
You don't reverse-engineer your day from a calorie budget. Fettle proposes meals and portions that already fit your goals, your preferences and your cuisine — without rigid rules or food anxiety.
Your week's food, ready to check out
Pillar Three
How to execute — the plan becomes your basket.
Planning fails at the supermarket. So Fettle aggregates your week's ingredients and turns them into a ready-to-buy basket via Morrisons on Amazon Fresh. One tap. No list-making, no impulse buys, no 6pm decisions.
Your week's food, ready to check out
Pillar Three
How to execute — the plan becomes your basket.
Planning fails at the supermarket. So Fettle aggregates your week's ingredients and turns them into a ready-to-buy basket via Morrisons on Amazon Fresh. One tap. No list-making, no impulse buys, no 6pm decisions.
Your week's food, ready to check out
Pillar Three
How to execute — the plan becomes your basket.
Planning fails at the supermarket. So Fettle aggregates your week's ingredients and turns them into a ready-to-buy basket via Morrisons on Amazon Fresh. One tap. No list-making, no impulse buys, no 6pm decisions.
A week in practice
What a Fettle week actually looks like.
YOUR CHECK-IN DAY · 2 MINUTES
Check In
Weight and adherence go in — on whichever day you choose in the app. Sunday planner or Monday resetter, the Engine doesn’t mind; it just wants the same day each week. It reads your weekly trend, smoothing out water, glycogen and one-off blips.
Same day · automatic
The Engine decides
Hold, adjust, protect, or run a protocol. Every decision comes with its reasoning on screen — nothing changes silently.
Same day · one tap
Plan → checkout
Your updated meal plan is aggregated into a grocery checkout. Shopping done before the week starts.
The rest of the week
Eat the plan
Meals arrive pre-decided. Eat what’s planned and confirm with a tap — or log the days that went differently. Both are fine; the Engine handles imperfect data.
Why Fettle
Compared to sorting it out yourself.
Compared to sorting it out yourself.
Most of the work was never the logging. It's deciding what to eat, keeping the numbers honest as your body changes, and actually getting the food into the house.
Most of the work was never the logging. It's deciding what to eat, keeping the numbers honest as your body changes, and actually getting the food into the house.
Capability
Fettle
Traditional trackers
Weekly calorie & macro recalculation
Automatic
Manual
Responds to plateaus & metabolic change
Explicit engine states
Limited
Meal planning
Built in, target-matched
Partial
Shopping
One-tap checkout
—
Handles missed logs & messy data
Designed for it
Breaks the estimate
Explains every change
Always
Rarely
Weekly calorie & macro recalculation
Fettle: Automatic
Trackers: Manual
Responds to plateaus & metabolic change
Fettle: Explicit engine states
Trackers: Limited
Meal planning
Fettle: Built in, target-matched
Trackers: Partial
Shopping
Fettle: One-tap checkout
Trackers: Manual
Handles missed logs & messy data
Fettle: Designed for it
Trackers: —
Explains every change
Fettle: Always
Trackers: Rarely
Capability
Fettle
Traditional trackers
Weekly calorie & macro recalculation
Automatic
Manual
Responds to plateaus & metabolic change
Explicit engine states
Limited
Meal planning
Built in, target-matched
Partial
Shopping
One-tap checkout
—
Handles missed logs & messy data
Designed for it
Breaks the estimate
Explains every change
Always
Rarely
Feature availability may vary by subscription tier. This isn’t “better or worse” — it’s a tool built for adaptation rather than static tracking.
Fettle’s future
What’s coming next.
Planned
Family meal planning
Plan and shop for the whole household, not just one plate.
Planned
More supermarkets
More places to send your basket beyond your first store.
Planned
Creator recipes
Recipes from the creators you follow, macro-costed and shoppable.
Planned
Smarter health sync
Richer signals from your wearables, plus automatic weigh-ins from smart scales via Apple Health and Health Connect.
Planned
Family meal planning
Plan and shop for the whole household, not just one plate.
Planned
More supermarkets
More places to send your basket beyond your first store.
Planned
Creator recipes
Recipes from the creators you follow, macro-costed and shoppable.
Planned
Smarter health sync
Richer signals from your wearables, plus automatic weigh-ins from smart scales via Apple Health and Health Connect.
FETTLE
See it decide for yourself.
First month free. Two minutes a week. The Engine does the rest.
FETTLE
See it decide for yourself.
First month free. Two minutes a week. The Engine does the rest.
FETTLE
See it decide for yourself.
First month free. Two minutes a week. The Engine does the rest.
fettle
Built in the UK. Meal plan in. Groceries out.
Always in fettle.
fettle
Built in the UK. Meal plan in. Groceries out.
Always in fettle.
fettle
Built in the UK. Meal plan in. Groceries out.
Always in fettle.