Kynto
I'm one developer in the Netherlands. These are the five things I've built, and they all run on servers in the EU.
Kynto Events
Everyone at a wedding or a company outing dumps their photos in one place. There's a shared timeline, and you can pull out the shots you're actually in.
What it does → On Google PlaySudoku Museum
Sudoku that pays you in artifacts. You dig them up and arrange them in a museum. Four variants, five difficulties, and a co-op mode if you'd rather not solve alone.
What it does → On Google PlayVet Quest
A merge game with a story: treat the animals, grow the practice.
What it does → Final testingAmbit
Shows you what's on your network and what's on the air nearby, then tells you what's wrong with it. It'll also flag Bluetooth trackers that seem to be following you.
The desktop companion for Windows and Linux can be downloaded now.
What it does → In developmentKynto Photo
A private photo library with faces, places and search. The web app works now. The Android app isn't on Play yet.
What it does →What these have in common
Not much, apart from who wrote them. The overlap is where they run and what happens to your files.
Hosted in Europe
Everything sits on servers in the EU with a European provider, so there's no US Cloud Act exposure to worry about.
Encrypted going in and sitting still
Uploads travel over TLS and are stored encrypted. Getting at a file means a signed link that expires. There are no public URLs.
You can take it or delete it
Export the lot, or wipe it. Event albums delete themselves on whatever date the organiser picked, so nobody has to remember to do it later.
Nothing tracks you here
No analytics, no measurement cookies, nothing loaded from a third party. The only outside request this page makes is for a font, and you can confirm that from the Content-Security-Policy header if you like.
Where the money comes from
Photo and events are subscriptions with no advertising. The two games and Ambit's free tier run ads, and paying for Ambit turns them off. None of them sell anything to data brokers.
It really is just me
So there's no support desk, and I'd rather say that up front than have you find out. I write the apps to explain themselves and every one has a privacy policy in plain language. Bugs do get fixed. Email might sit for a while.