SonicCore-X
Your data. Your devices. Your rules.
SonicCore-x builds apps that never touch a server you don't control. No cloud accounts to trust, no data to leak, nothing to sell.
Built Different, On Purpose
SonicCore-x is a technology development company. We design and build the underlying engineering that powers private, server-free applications — and turn it into products people actually use.
We started with a simple observation: most apps ask you to trade privacy for convenience. We don't think that trade should exist. So we build software the harder way — where your data stays on your own devices and your own cloud accounts, and the app is simply the bridge between them.
Our first product, SonicBrain, launches soon. Our second, DropSonic, follows shortly after — both built on the same private-by-design foundation.
SonicCore-x is founded and led by Jānis Zariņš, Founder & CEO.
Three Principles, No Exceptions
Privacy isn't a settings toggle in our apps. It's the reason they exist.
You Own It
Your files, your music, your data — they live on your devices and the cloud accounts you already use. We never ask you to move them into a service we control.
We Can't See It
Our apps are built so that even we don't have access to your content. Not "we promise not to look" — structurally unable to.
No Catch
No ad networks. No data brokers. No "free" tier that's secretly paid for with your information. If a feature is free, it's free because we built it to be.
What We're Building
Two apps. One philosophy. Built on the same private foundation, designed for different parts of your life.
SonicBrain
Your music. Your cloud. Your rules.
SonicBrain is a personal music player that streams from the cloud storage you already use — without routing anything through a company server. It looks and feels like a premium music app, because it is one. The difference is what happens behind the scenes: nothing about your library or listening habits ever leaves your control.
DropSonic
Share files, not trust.
DropSonic lets you sync and share folders directly between your own devices — and directly with other people — without a cloud middleman ever holding a copy. Whether you're keeping your own files in sync across your phone and laptop, or exchanging documents and messages with someone else, the connection is always direct, private, and encrypted end to end.
The Choice Shouldn't Be This Hard
Today you're offered two options: convenient cloud apps that quietly collect everything, or going without and losing the convenience entirely. We think there's a third option.
Privacy You Can Verify, Not Just Trust
We know "we care about your privacy" is something every company says. That's exactly why we design our apps so privacy isn't a promise — it's how the architecture works. Over time, we're committed to opening parts of our code to independent review, so you don't have to take our word for it.
Just Getting Started
SonicBrain is our proof that private-by-design apps can feel just as good — or better — than the alternatives. DropSonic is next. Beyond that, we're building a small family of apps that all share one foundation: your data never has to leave your hands.
Get in Touch
Have a question, a partnership idea, or press inquiry? Send us a message.