No-Code APP for accountant to collect information from mental health therapist clients

I’m looking for someone who can utilise non-code tools as much as possible to keep the cost down. Ideally this will be created in Google appsheets. One of the main reasons I'm thinking of using appsheets for this, is because I want to test the concept with my target market... (Budget: £250 - £750 GBP, Jobs: AppSheet Development, Google Sheets)