Most calorie trackers look fine when the user is sitting down, focused, and logging a clean meal.
That is not the real test.
The real test is the meal right after a workout, when someone is hungry, moving fast, and one annoying correction is enough to skip logging altogether.
That is the problem I built MetricSync around.
Instead of assuming every meal starts with a perfect photo, MetricSync lets people log food with photo, barcode, or text. If the first estimate is close but wrong, the correction step needs to be quick enough that the habit survives.
For an AI nutrition app, retention is usually less about the flashiest demo and more about whether logging still feels easy on the messy meal.
MetricSync is iPhone only, $5/month, and includes a 3 day free trial.
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