Yes but with limitations.Mendix offers a Free App (Free Cloud/sandbox) where you can build and run a full working app with a database, and host it publicly without paying.your barber‑appointment app (booking, reschedule, cancel) can run 100% on the Free Cloud.
You can host the app for free, but you cannot use these things:
Meaning:
https://barberapp123-sandbox.mendixcloud.com → OK
https://www.mybarbershop.com → ❌ not possible without a paid plan.
If no one visits the app for a while, it goes idle and restarts on first visit. For a barber shop this might be acceptable.
Free Cloud is small → fine for small traffic.
Automatic reminders, nightly cleanup jobs → won’t run.
You can replace this with "send reminders when user opens the app".
Free Cloud allows only Mendix’s built‑in database.
6.Limited user concurrency: I think only 2 connection.
If you wish you can deploy the free app by clicking the publish on right-side top to deploy the free app.