https://openfreemap.org

I'm not associated with the project, and just saw this recently, and I thought osmAPP can benefit from this option.

Here's their own blurb:

What is OpenFreeMap?

OpenFreeMap lets you display custom maps on your website and apps for free.

You can either self-host or use our public instance. Everything is open-source, including the full production setup — there’s no ‘open-core’ model here. Check out our GitHub. The map data comes from OpenStreetMap.

Using our public instance is completely free: there are no limits on the number of map views or requests. There’s no registration, no user database, no API keys, and no cookies. We aim to cover the running costs of our public instance through donations.

We also provide weekly full planet downloads both in Btrfs and MBTiles formats.

This came to mind when I recently read an issue about other tiles using place names other than name tags from OSM.