Research agent finds the missing foods
Mention "Olive Garden herb-grilled salmon"? If we don't have it, our research agent fetches the official nutrition page, parses it, and caches the result with a citation. Every Macroline user benefits.
Features
Macroline does fewer things than other trackers. It does them honestly.
Describe
Say it in plain words.
Type it, or dictate it — the web app has a mic button, and on iPhone the keyboard's dictation key does the same job. "I had a chicken caesar wrap with extra parmesan and a coke." Macroline parses the description, finds matching foods (or researches them on the fly), and logs the right portions. You confirm with quantity sliders before anything saves.
Provenance
Every food, sourced.
USDA FoodData Central, OpenFoodFacts barcoded products, and official chain restaurant nutrition. Every food row carries a source URL — tap any number to see where it came from. No more wondering if "chicken breast" entry #3 is the one with the right macros.
Log from anywhere
Log from Claude. Or ChatGPT. Anywhere.
Macroline runs as an MCP server, so any modern AI assistant can log meals for you. Talk to Claude on your laptop, ChatGPT on your phone, or any MCP-compatible client — it all lands in your diary. The food database, your goals, and your daily summary are all available as tools.
Honest dashboards
Trends, not streak shame.
30-day rolling averages, weight history, calorie trends, macro stacks. Charts adopt the color of your dominant data tier — when most of your week is estimated, your calorie chart says so. Tracking is for awareness, not punishment.
Goals that fit your life
Cut, maintain, bulk, lifter. Pick a starting point and fine-tune calories or macros any time. Your goal is yours — Macroline doesn't moralize about it.
Your data, your call
One-tap account deletion that really deletes: your diary, weights, medications and body log go with it. We don't sell data, run ads, or use your meal content to train AI models.
Protein target, calculated
Enter your weight and goal, get a starting protein number to track toward. It's a starting point; adjust it with your dietitian.
Your usuals, a couple of taps away
You don't eat a thousand foods, you eat the same twenty. Re-log them from Recents without searching.
Trends, not noise
Sync your weight and watch the multi-week trend line instead of the daily bounce.
Built for GLP-1
Log your dose and side effects, and see your dose-in-system across the week. Macroline is not medical advice. The GLP-1 walkthrough →
Your body keeps a record too
Bathroom breaks, how you feel, supplements and your cycle — one tap each, next to your meals. Switch on only the sections you want; the rest stay hidden.
A weekly recap that welcomes you back
One summary at the end of the week: your trend, your protein, what you discovered. Written to bring you back after a gap, not to scold you for it.
A coach that reads your own data
Compares what you actually ate with how your weight actually moved, then suggests a calorie target from that instead of a formula. It needs about two weeks of logging before it can say anything useful, and it never changes your goal on its own.
A home screen that gets out of the way
Today's calories, protein, your trend, and your usuals, all at a glance.
Ready to try it?
Macroline is on the App Store — free to download. Or use the web app in any browser.