Based on what I have read, it looks like all the basics will be available out-of-the-box (on the product info page, it says “Upon initial shipment of the Librem 5, it will offer the essentials: phone functionality, email, messaging, voice, camera, browsing.”), and I think that a lot of the apps on the fund page will also be available. The fund page seems more like a ‘help us improve these apps’ than a ‘help us develop these apps in the first place’.
For some of the apps (social media, google products, more mainstream apps) I would imagine that there is currently nothing at all, so any money spent will be put towards the development. For the others, the money is likely put towards improvement. Assuming they get a reasonable amount of funding, I would be surprised if the majority of the apps don’t wind up hitting the phone eventually.
I don’t think anyone buying this phone should, at least initially, expect feature-parity. There will be easy android emulation access for people who need that (and I will probably use it if necessary), but I feel like anyone buying this phone should expect to have to wait a minimum of ~6 months for “mainstream” apps to hit the device.
At the same time, I don’t really think anyone is buying this device for feature-parity. If you really need feature parody, you should probably wait at least a few generations. This is basically linux phone v1 (I know there were some before, but this is the first that I would truly consider daily-driveable), and just as with iPhone and Android v1, we are seeing poor 3rd party app support, and low adoption rates. Let’s just all hope that there are enough to get app developers to notice us.