The Vibe Club app can import weight entries from other apps.
When importing entries, Vibe Club will only import one weight per day. If there are multiple weight entries for a day from Apple Health, Vibe Club will import the lowest weight entry, as this is the best way to estimate your moving average. If you manually enter your weight for a given day, this will overwrite any Apple health weight entries.
Vibe Club considers your weight for a date to be the lowest weight you achieved that day, and it does not collect information about the time of day when you achieved that weight.