Date validation

We have a client that needs a date field to not allow a date to be entered that's more than 10 days prior to "today".

We purchased Momentum forms so we could make a nice looking customizable form, but this date field validation may be a deal breaker and we may have to switch to a different platform altogether.

Any ideas on how to do this either on Momentum.io Dynamic Forms or some sort of code in Podio?

Thanks!