Thank you so much for this! I've also had the idea but, contrary to you, never had the courage nor energy to actually do it. I have some of my old devices backed up with the very first text my (now) wife and I exchanged, and this feels like the perfect use case.

So thank you so much, I now have another project to host on my home server, and a meaningful one.

>(PS. I'm open to changing the name. Never really liked this one...)

Timelinize is great, it explains what the product does