Fibre Is the Nutrient Your Tracker Probably Cannot See

Here is a test that takes a minute and tells you more about your tracker than any review.

Log something ordinary. Open the entry. Count the numbers.

Four — calories, protein, carbohydrate, fat — means the app is a calorie counter. It cannot tell you about fibre, and it cannot compute net carbohydrate.

Around a dozen adds fibre, sugar, sodium, saturated fat. Enough for most purposes.

Fifty or more means there is a real nutrition database underneath.

Why fibre specifically

It is the diagnostic, for three reasons.

It is the nutrient Western diets are most consistently short of. It is invisible without a record, because unlike calories your body gives you no feedback about it. And it is trivially fixable once you can see it — a few deliberate swaps move it substantially.

It is also the input to net carbohydrate, which is why people on ketogenic diets end up in specialist apps. The arithmetic is trivial; the missing data is the problem.

The number

Roughly 25 to 30 g a day for adults is the usual guidance, and most intakes fall short.

Worth noting that fibre is the first thing to disappear in an aggressive diet, because the vegetables get cut to make room for protein. That is exactly backwards from a satiety standpoint — you are removing the cheapest fullness available at the moment you most need it.

What passes the test

Among the apps on this desk, PlateLens returns 82+ nutrients per entry from a verified catalogue, and Cronometer goes deeper still on micronutrients. Lose It! and most photo-first apps sit at or near the four-number level. MyFitnessPal varies by entry, because whoever typed it in decided how much to fill in — which is its own answer about database quality.