Xano and Multiple Apps

I am looking to make a relatively simple app that can be copied and rolled out to multiple clients. The clients are all in one industry so the app will be basically the same and rebranded for each client.

As far as Adalo is concerned, I would be on the Business Plan so each app would cost me $25 per month. ($250 per month for 10 apps)

It gets a bit trickier when the clients require data security for both the builder and the app. The app can be secured (ish) but the Adalo Builder is still too vulnerable in the client’s eyes.

So I have figured that I use Xano as my back end as I can promote the Security and Compliance of Xano and no data is then shown in the Adalo Builder.

But the expenses start to mount. Xanos Launch plan is $99 for 3 workspaces. I understand that is then $33 per app database. More than the Adalo app.

So that has a hard cost to me of $25 + $33 = $58 per month per app.

Does anyone have any bright ideas on how I could go about doing this in an easier or cheaper way?

The target market is around 6,500 clients so it could get big over time.