AI Nutrition Coach

Logging a meal gives you an estimate of calories, protein, carbohydrates and fat broken down ingredient by ingredient, from a photo or from a typed description; you can adjust ingredients and quantities, and the saved record feeds your coach’s answers. Our AI personal trainer app pairs that log with training plans and notes, and the coach reads the relevant parts of what you logged before it replies.

1. You capture the meal. A photo or a description, entered in the app.
2. The app requests an estimate. Your message and photo go through api.fitnessinstructor.ai to a third-party AI provider that writes the estimate.
3. You adjust. Ingredients and quantities are editable, because AI estimates can be incomplete or wrong.
4. The estimate becomes your record. Calories, protein, carbs and fat land in your account, which lives on our servers in France.
5. The coach can use it. Answers about your eating draw on the logged meals together with your workouts, notes and measurements.

Two honest notes. First, unlike body photos — which are processed to estimate measurements and then not stored — meal photos are kept in your account, listed in the privacy policy, because they are part of the log. Second, AI providers do not use your requests to train their models, and may retain a request up to 30 days to detect abuse.

If your goal is eating habits rather than lifts, the tooling you need is the same loop with more attention on food: consistent logging, visible totals, and a coach you can question about what you just saved.

AI diet coach app

As an app, not a chat window: the log travels with you — iPhone and Android beta — and every entry builds the history the coach reads before answering. Your coach also replies in seven languages, English, French, Spanish, Italian, Portuguese, Hebrew and Russian.

AI diet coach agent

“Agent” should mean one conversation that knows your context, not eight disconnected bots. In this app a single coach persona — one of four coaching styles, each with a woman’s and a man’s face, all AI personalities rather than human professionals — stays attached to your whole log, meals included.

…and the AI wellness coach app

Within the documented scope, the coach can optionally read (never write) sleep, resting heart rate, heart-rate variability, steps, active calories and workouts from Apple Health or Health Connect, so recovery context informs its answers — summaries stay on your phone, and nothing reaches the coach until you switch on “Share with my coach”, which is off by default. What it does not claim: therapy, medical nutrition treatment, or diagnosis. Those belong to licensed professionals.

When you describe a meal instead of photographing it, name the foods and the quantities you actually ate — the estimate works ingredient by ingredient, and you stay able to correct each line. Same logic when you message the coach: it already reads your logged workouts, meals, notes and measurements, so “what should I change about my protein this week?” beats a paragraph of re-explanation. The more useful context you log, the more context it has to work with.

• Reference values: the Dietary Reference Intakes have been issued as eight volumes since 1998 — quantitative estimates of nutrient intakes for planning and assessing diets of healthy individuals in the United States and Canada.
• Composition data: USDA FoodData Central is the U.S. public source of food composition data, in multiple distinct data types, released into the public domain under CC0.
• Activity guidance: the WHO’s 2020 guidelines give evidence-based physical activity recommendations for children, adults and older adults — and for the first time cover sedentary behaviour and subpopulations such as pregnant and postpartum women and people living with chronic conditions.
• Sports nutrition positions: the International Society of Sports Nutrition’s 2017 position stands state that 1.4–2.0 g of protein per kg of body weight per day is sufficient for most exercising individuals; that total daily protein intake, preferably in evenly spaced feedings, matters more than precise timing; and that creatine supplementation raises intramuscular creatine, which may help explain improvements in high-intensity exercise performance. Read with disclosure: those papers list author financial ties to the supplement industry.

None of this means the app applies those numbers to you automatically — it means you can check any coach suggestion, including ours, against the sources above.

Fits you if: you want frictionless meal logging with editable estimates and one coach conversation covering training and food together. Not for you if: you are under 16, pregnant, managing a medical condition or medication, or have a history of an eating disorder — our terms say to check with a doctor before starting a new eating plan and name these cases; a registered dietitian or your physician is the right tool there. This coach is not a doctor, dietitian or physiotherapist and does not diagnose, treat or prevent anything.

The app is free to use and the AI coach is free up to a usage limit shown inside the app; the limit may change. A paid upgrade may be offered later — if it is, the price and what it includes appear in the app before any purchase, sold through the App Store or Google Play under their terms. Until a price exists in the app, no number will ever appear on this page.

Other nutrition assistants exist — from dedicated food-log apps to general fitness platforms — and pricing, depth and data practices differ. We compare third-party AI trainer apps with dated checks on the comparison page for how it compares with other AI trainer apps, and photo-calorie tools specifically in the best AI calorie counter comparison. Conflict of interest, displayed: Fitness Instructor AI is ours; the third-party comparisons include that same disclosure rather than a claim of neutrality.

The app is in beta on iPhone (TestFlight) and Android (Google Play testing). On the home page you choose your phone and a coach, which prepares a draft email to Yoram; you review and send it from your own email client, and he helps you join the right testing program. Your address is used only to reply and to add you as a tester.

• Stored in your account (servers in France): workouts, meals including meal photos, notes, body weight and measurements, onboarding answers, coach conversations and an AI usage count.
• Not stored on our server or in your account: body photos — only the measurement estimates they produce are saved.
• AI path: requests go through our API to third-party providers that do not train on them; transfers outside the EU follow the Standard Contractual Clauses.
• No ads, no selling; this website sets no advertising cookies or third-party analytics.
• Delete everything: Settings › Delete my account, or one email — gone within 30 days, backups included. Details on the delete-account page.

The rules that bind the app itself are in our Terms of Use.

What is the average cost of a nutrition coach?

We do not have a sourced price figure for this page, so here is the figure we can stand behind: the U.S. Department of Labor’s O*NET database lists median wages for Dietitians and Nutritionists (code 29-1031.00) of $36.73 per hour ($76,400 annual, 2025 national data shown on the page). A wage is not a client rate — the pricing landscape is tracked, with sources and dates, in our AI fitness coach cost guide.

Can I use AI as a nutritionist?

As a logging and pattern-spotting aid — that is what this app is built to be, and its coach answers from what you actually logged. As a replacement for a registered professional — no: our terms state the app is not a doctor, dietitian or physiotherapist, its AI answers can be incomplete or wrong, and eating-disorder history, pregnancy, medical conditions and medications all call for a clinician first.

What is the best AI for nutrition?

Depends on the job — photo logging, macro math or full coaching — and we are not the neutral judge of our own category; the dated comparisons live on the AI trainer apps comparison page.