Glide

Glide reads the columns in your spreadsheet and proposes a working app structure automatically, lists, detail screens, tabs, that you then restyle and extend with its own logic layer for things like favoriting, filtering, or user-submitted data. Because the data source is often a Google Sheet non-technical users already understand, the learning curve is shorter than most builders that expect you to design a database schema first.

Pricing is based on rows of data and the features unlocked (user profiles, private data, custom actions), so a small internal tool with a few hundred rows costs little while a data-heavy consumer app climbs the tiers quickly. Your source data in Google Sheets or Airtable stays yours and exports easily, which meaningfully lowers lock-in risk since Glide is really a layer on top rather than a closed data silo. The ceiling is app store presence, Glide apps are progressive web apps by default and getting a listed native app takes extra steps, plus complex custom logic and design both cap out sooner than a code-generating tool like FlutterFlow. It fits internal tools, community directories, and simple consumer apps built by someone who already has the data in a spreadsheet.