A free food diary that goes one level deeper than protein: it maps everything you eat to its full amino acid profile and compares your day with your personal targets. It is built by Logan King and Dr Paul T Morgan, Senior Lecturer in Human Nutrition and Metabolism at Manchester Metropolitan University.

Yes. Browsing the database and trying the diary costs nothing, and a free account unlocks everything else: a month of dated days, saved meals, charts over time, CSV export and syncing across your devices. There is no paid tier.

Open the Food diary, pick a meal (breakfast, lunch, dinner or snacks) and tap Add food. Search covers 10,259 foods and forgives typos, so chickn still finds chicken. Enter grams, or count in items where that is more natural: eggs, slices, scoops, cups or tablespoons.

If you eat the same thing often, open that meal in the diary and tap Save meal. From then on it is one tap to add the whole meal again, and the Saved meals page lets you rename, edit and build meals from scratch. Saved meals sync to your account.

Amino acid profiles and nutrients come from published analytical sources: USDA FoodData Central (SR Legacy), the UK CoFID 2021 tables, and peer reviewed analyses such as Gorissen et al. 2018 for protein powders. Every food cites its source, and the citation links to the exact record.

The baseline is the WHO/FAO/UNU 2007 requirement at your body weight. Because no official figures exist for higher protein intakes, we scale that baseline in proportion to your protein target and say so openly wherever the numbers appear. The default protein target is 1.6 g per kg of body weight, in line with intakes meta-analyses associate with supporting muscle; you can set your own in Account & targets.

The composition score is the lowest essential amino acid ratio against the WHO/FAO/UNU adult pattern, using foods with available profiles. It describes proportions per gram of protein, not daily intake. It is not adjusted for digestibility and is not DIAAS or PDCAAS. A low score does not diagnose a deficiency. Daily intake percentages separately compare logged amounts with your scaled targets.

Food composition and portion estimates can vary. No measured confidence interval is available for daily totals, so the intake bars show no uncertainty band and we do not recommend an automatic 10% margin. Missing data is unknown, not zero.

The diary rolls to a fresh day automatically. Yesterday keeps its date, foods and note, and moves into your history; the diary holds a rolling 31 days, with the oldest dropping off as you keep logging. Each day also remembers the body weight and target it was logged against, so changing your weight today never rewrites last week.

Yes. Data over time charts protein, calories, carbs and fat per day, with a combined macros line chart, and Download CSV exports every food of every logged day, including all twenty amino acids in grams, ready for Excel or any spreadsheet.

Your diary is stored against your account and nowhere else, protected by row level security, and never sold or shared. Signing out leaves the copy on your device untouched, and Account & targets has a delete option that removes your synced data permanently.

No. Aminodata is an educational reference built from public analytical data. It is not a substitute for advice from a doctor or registered dietitian, especially if you have a medical condition. Corrections are welcome through Send feedback.