Nutrition and metabolism, meal by meal

See what your food actually does.

Every meal becomes a living, estimated picture of glucose, insulin and fat‑burn, projected hours ahead and refined as you log.

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On Android and iPhone · Free to download · 4.4M+ products by barcode · AI logging with Premium

scroll to watch a day unfold ▾

One day, as IQFood estimates it

Your metabolism has a plot.
IQFood lets you read it.

00:00

07:40 · Breakfast, logged in secondsPhoto, voice or barcode. The estimate updates right away: a gentle rise.

13:10 · A bigger rise aheadWhite bread and a soda: IQFood estimates a larger glucose rise, and fat burning dipping while insulin is high.

17:30 · Small move, visible payoffA short walk after eating helps muscles take up glucose; IQFood shows the estimated effect.

22:00 · Fat burning rises againDinner digested and insulin settling, estimated fat burning rises again overnight.

Not just calories.
Consequences.

Calories are the receipt. IQFood estimates the transaction: what each meal is likely to do to your fuel use, your hunger and your day.

Key screens

Seven screens, all built from what you log

The estimated curves, hours ahead

Glucose and insulin from what you log, with the next hours drawn ahead as a dotted line. Hold and slide to read any moment; est. ketones and cravings share the page.

Just say what you ate

With Premium, type it like a message, hold the mic or snap the plate. Foods, grams and calories are logged in seconds; fix anything by chatting, or Undo.

Every meal, judged for your plan

Foods eaten together share one card, with the meal’s share of your day. Near or past a limit, it says so in one line; hold any meal to see why, in numbers.

See when fat-burn likely starts

Eating, digesting, burning fat and storing on one strip, with the hours fasted and estimated fat-burn. No timer to set. Fasting is not suitable for everyone.

A goal date that moves with you

The goal date is re-estimated from your own weight trend as you weigh in, and a jump after a salty dinner shows as likely water, not fat. No generic 500-kcal rule.

Your cycle on the same graph

Typical estrogen and progesterone patterns next to your metabolism estimates, with period predictions that learn your rhythm. Illustrative, not measured.

Your coach, on the same page

Once you accept, your coach sees your meals, weight and activity, proposes targets in the chat and plans sessions with you. Revoke it any time. Trainer Mode is free.

In the app

Designed around your day

Scan a barcode, free

Point the camera at a packaged food and the barcode scans on its own, matched against more than 4.4 million products. Free, with no AI involved.

Where the 4 pm dip comes from

Sleep, meals and movement in one estimated energy curve, with the fuel mix and glycogen likely stored. Sleep and steps come in from Health Connect or Apple Health.

Today’s experiment

Some days IQFood re-runs your own day with one change, like an earlier last meal, shows the estimated difference and checks back the next day. Calm days get none.

An engine that learns from you

Your estimated burn moves from the textbook formula toward your own as logged days add up. On Android, add a blood test and the estimates take it into account.

Friends, fires and stories

Add friends by @tag or QR code, keep your fire going, react to a friend’s meal, and share your weight trend or fasting week over your own photo.

Private by default

Your health data runs the app for you. It is never sold and never becomes an ad profile. Delete it any time in the app, or ask us for a copy.

Our approach

Built on published research. Clear about its limits.

Labeled as estimates

Curves are estimates computed from your logs, without false precision. In the app, the curves explain what drives them and how sure the estimate is.

Grounded in research

Glycemic response, ketosis, fat adaptation, cortisol and sleep, built from published research and adjusted using what you log. See the sources.

Not a medical device

IQFood informs; it does not diagnose. If you have a medical condition, talk to a doctor or dietitian before changing how you eat.

The Metabolism Journal

Learn the plot of your own body

Short, sourced reads on the science behind the engine, written to be understood.

Glucose

Can an app show how food affects blood sugar without a sensor?

What a model-based estimate can and cannot tell you about blood sugar after a meal, how it compares with a continuous glucose monitor, and what drives the rise.

Tracking

How accurate is calorie counting? Labels, databases and photo estimates

Every way of counting calories has error: label tolerances, database gaps, portion guesses and AI photo estimates. What the research shows, and why consistent logging is still useful.

Weight

Why your weight changes from day to day, and how to read the trend

Most day-to-day changes on the scale are water and the food still in your gut, not body fat. What moves the number, how big the swings tend to be, and how to read the trend underneath.

Your body,
finally legible.

Free to download. Log your first meal in seconds and see what it does.