Solo
Tech
AI
The one-person studio behind the Zimple app ecosystem — designed, built, and maintained in Vienna, for the long run.
The apps
Zimple Home
LIVE — APP STORE & GOOGLE PLAYHousehold inventory, simplified.
Catalog your physical world into Spaces: scan items with the AI camera, keep receipts, warranties and documents attached, and see what your home is worth.
Visit zimple.tech ↗- AI camera scan identifies items
- Spaces for rooms and places
- Warranties, receipts & documents
- Total household value at a glance
Zimple Finance
IN DEVELOPMENTYour finances, made simple.
Personal finance with savings pots and long-term clarity — the next app on my bench.
A note from the founder
I'm Yijie Liu. SoloTechAI is my one-person company in Vienna, Austria — the studio behind the Zimple ecosystem.
One person means exactly that: I design the interfaces, write the apps and the servers, answer the support emails, and keep the systems running. Zimple Home is live on the App Store and Google Play; Zimple Finance is next on my bench.
A studio of one is not a smaller version of a big company. It is a different promise: everything you touch was decided, built, and cared for by the same pair of hands — and built to last.
Yijie Liu
Founder, SoloTechAI e.U.
Questions, answered
What is SoloTechAI?
A one-person software company (e.U.) in Vienna, Austria. It builds and holds the Zimple app ecosystem — no agency work, no client projects. The apps are the products.
What is the Zimple ecosystem?
A family of apps under zimple.tech. Each app simplifies one area of life and they share one account and one design philosophy.
Is Zimple Home available?
Yes. Zimple Home is live on the App Store and Google Play, with a web app as well. Start at zimple.tech — the free plan needs no card.
What's next?
Zimple Finance — personal finance with savings pots. It is in active development; I don't announce dates before things are real.
Who builds all of this?
One person. Design, code, servers, and support are all done by me — see the founder note above.
Can we work together?
There are no open roles and I don't take client work. For everything else — questions, feedback, press — use the contact form below.
Write to me
A question, an idea, or just hello — I read everything myself.