Welcome to Eatalyze — an AI-powered app that helps you understand what you’re really eating, track any nutrient that matters to you, and get personalized advice for closing the gaps.
Getting Started
1. Get a free Gemini API key
Eatalyze uses Google’s Gemini AI to personalize your nutrition tracking, so before anything else, you’ll need your own free API key. Visit ai.google.dev, sign in with a Google account, and generate a key. Keep this somewhere safe — you’ll paste it into Eatalyze once, during setup.
2. Set up your profile
The first time you open Eatalyze, you’ll be asked to enter your API key and build your profile: age, gender, height, weight, ethnicity, any dietary restrictions, your health goals (weight loss, muscle building, heart health, general wellness, and more), and any health conditions you’d like the app to be aware of (like high blood pressure or diabetes).
None of this is shared anywhere except with Google’s Gemini API, as part of generating your personalized advice — see our Privacy Policy for full details.
Once your profile is saved, Eatalyze’s AI suggests a starter set of nutrients and foods tailored to you. If AI isn’t available right at that moment, don’t worry — it automatically catches up and fills these in later, without you needing to do anything.
3. Update your profile anytime
Your circumstances change, and your tracking should too. Go to Settings to update your profile whenever something changes — a new health condition, a different goal, a new restriction. Eatalyze automatically looks for new nutrients and foods worth adding based on your updated profile the next time it syncs.
Logging What You Eat
Eatalyze gives you several ways to log a food, so you can pick whatever’s fastest in the moment.
Type it in. From the Diary tab, tap the add button, search for the food, and if it doesn’t exist yet, add it right there. Eatalyze’s AI fills in its full nutrient profile in the background — you don’t need to wait for that to finish before moving on.
Scan a barcode. From the Foods tab, tap the barcode icon and point your camera at a packaged product. Eatalyze looks it up and pre-fills what it finds.
Snap a photo. Point your camera at a plate or tray of food, and Eatalyze’s AI identifies each item on it and estimates portion sizes for you — handy for home-cooked meals or restaurant plates that aren’t in any database.
Log a recipe. If you regularly cook the same dish from several ingredients, build it once as a recipe in the Foods tab, and its nutrient profile is calculated automatically from what’s in it. From then on, log the whole recipe as a single food.
Whichever method you use, pick the quantity and unit that matches how you actually think about the food — grams, cups, tablespoons, a small/medium/large serving, whatever’s natural. Eatalyze converts everything to the right amount behind the scenes.
Understanding Your Daily Totals
The Diary tab’s Daily Totals section shows, for each nutrient you’re tracking, how much you’ve eaten today compared to your personalized target — with a simple smiley face and percentage so you can tell at a glance whether you’re on track, running low, or over.
Look for the small arrows next to each status: they show whether eating more or less of that nutrient is generally a good thing for you, colored green (good), red (worth being cautious about), or grey (doesn’t matter much either way). A short legend explaining this is always visible at the bottom of the screen.
Seeing the Bigger Picture
The Show tab is where you dig deeper. Switch between three views:
- Groups — nutrients grouped into Deficient, Excess, and On Track categories, so you can see your biggest gaps at a glance.
- Graph — the same categories, with visual progress bars for each nutrient.
- Trend — compare today against your last week, month, and year, so you can see whether you’re improving over time, not just how today looks in isolation.
You can pick any past date to look back at — future dates aren’t selectable, since there’s nothing to show yet. If a period (like this week) hasn’t been fully logged, Eatalyze estimates what the full period would look like based on the days you did log, and marks that estimate clearly so you know it’s an approximation, not a precise figure.
Tap Report from this screen for a detailed, shareable report — it reflects whichever date you had selected on the Show screen, clearly labeled “Data as of” that date.
Getting Personalized Advice
Open the Ask feature to chat directly with Eatalyze’s AI about your nutrition — ask about a specific food, a nutrient, or how something fits your goals, and get an answer that takes your actual profile into account.
For a more targeted nudge, ask what you should eat for the rest of the day. Eatalyze looks at what you’re currently deficient or excessive in, factors in your dietary restrictions and the foods you already eat often, and suggests specific meals or snacks to help close the gap — using foods you’re likely to actually enjoy, not generic advice.
Managing Your Data
Everything you log stays on your own device — Eatalyze doesn’t store your data on any server of its own.
Back it up. From Settings, tap Backup Data to save a copy of your foods, nutrients, and diary history to a file. This is worth doing before switching phones, reinstalling, or just for peace of mind. Your profile and API key are included too, but note that this backup file contains your API key as plain text — store it somewhere private, and don’t share it.
Restore it. If you ever need to bring your data back — a new phone, a fresh install — use Restore Data and select your backup file. This replaces everything currently on the device, so make sure it’s really what you want first.
Export names. If you’d rather just keep a simple list of your foods or nutrients (without the full backup), Settings also offers a plain CSV export.
Getting Help
If something isn’t working right, or you’d like to suggest a feature, go to Settings > Send Feedback — this opens a pre-filled email you can review and send from your own email app.
For frequently asked questions, visit our Support page.