Useful without installing the app
Bring a question. Leave with a check you can use.
Work through a wearable export, a recipe or a food label. These free browser tools show the arithmetic, keep missing information visible and give you a practical result. No Nutrinaut account is required.
Make sense of your own CSV
Map your file’s columns, check timestamps and durations, and inspect rows that need attention. Your CSV stays in your browser; the report identifies checks, not a diagnosis.
Open Data Forensics Lab →Take a recipe through to shopping
Keep ingredient amounts, finished yield and eaten portions together. Build a weekly list or audit one recipe, then save your worksheet or print the result.
Open Recipe & Grocery →Check the portion behind a label
Scale the values to what you ate. Keep US and EU/UK label systems, salt and sodium, and total and added sugars separate.
Open Nutrition Label Decoder →
Guides and methodology
Before You Follow an AI Insight: Check the Evidence
Six questions, three worked examples and a printable evidence card. Separate what an app observed from what its recommendation can justify.
Check an AI insightAn Empty Food Log Is Not a Calorie Deficit
A low diary total can mean missing records, not low intake. Check completeness before interpreting an average or changing a plan.
Check diary completenessWhy Calories and Macros Do Not Always Match
Four worked examples show how rounding, serving sizes and the limits of a simple formula can change the arithmetic.
Audit the food arithmetic
