Hi. I am gonna build a simple app for a company to ease their work. The company is sending out pdf files to their users' email. The data is a health analysis with a lot of different health values. The app should be an MVP, where users can watch their data instead of opening a pdf file. The company should be able to fill in the data in either Firebase or Contentful database. Is Contentful or Firebase best for this solution? What is your opinion?