Carbohydrate is the number. Not calories.

One budget, whatever you trained

This is the one place where everything you do genuinely adds up. Running, lifting, a HYROX session and a swim each carry their own energy cost, and they are summed into a single daily figure.

Energy comes from your resting metabolism and the sessions on the plan; carbohydrate is then set against that day’s load, and protein and fat are held at their minimums while carbohydrate takes the remainder.

• A carbohydrate band, not a fixed numberLight through to very high, mapped from the day’s load, in grams per kilogram of bodyweight.
• Race day is solved backwardsCarbohydrate is set first, at race-fuelling levels, and the energy target is derived from it — never the other way round.
• Floors that holdEnergy availability floors are enforced in the engine, and rounding only ever goes up.

When to eat, not just how much

Each planned session carries its own fuelling: what to take beforehand and how that scales with how long you have, what to take during if the session is long enough to warrant it, and what the recovery window looks like afterwards.

Every figure carries its evidence grade and the work it came from. Where the evidence is thin, the app says so rather than rounding it up to a fact.

• BeforeGrams per kilogram, scaled by how many hours out you are.
• DuringGrams per hour, plus sodium — and silence on sessions short enough not to need it.
• AfterA recovery rate across a defined window rather than a single figure.

Logging, without the countdown

Search a food, scan a barcode, enter a panel by hand, save a meal, or copy yesterday. What you see is what you have eaten.

What you will not find is a number counting down to zero. The arithmetic that produces one is banned in the codebase and a lint rule fails the build if anyone reintroduces it — including a variable named "remaining".

• No streaks on foodConsistency is a training idea. It does not belong on a food diary.
• Exercise does not earn foodSessions raise the target because they cost energy, not as a reward.
• Weight is a trendA single reading is noise, and is shown as part of a line rather than a verdict.

When Stryde declines

For some people a calorie target is the wrong thing to hand over. Where you tell us about a history of disordered eating, a relevant clinical condition, pregnancy or breastfeeding, or if you are under eighteen, Stryde does not set one — and points you somewhere better equipped than an app.

The refusal is built into the engine rather than the interface, so there is no path around it. If you were under eighteen when you set it up, it lifts itself on your birthday.