How about a public Airtable or Google Sheets document? If you want a standalone site, embed that document in your static site. Visitors can view and do basic op

How about a public Airtable or Google Sheets document? If you want a standalone site, embed that document in your static site. Visitors can view and do basic operations on your site, and you can link to the document on Airtable or Sheets so they can do more advanced analysis.