Live product
Health technology
Health3
A Flutter health app that turns lab documents into structured biomarkers, trends, and shareable reports.
700+ monthly users · 3,000+ labs · 27+ countries
FlutterSupabaseAWSTextractBedrock
Read case study Founder-led product studio · Zurich
One person.Serious output.
Premium websites and production software, built directly with a senior engineer. Start at $500, ship an MVP in 10 working days, and keep every line of code.
Fixed scope Senior delivery Your code from day one
Evidence over adjectives
Built by the person you hire.
A compact studio with public products, measurable usage, and one accountable technical owner.
Verified
15+
years engineering
Verified
3
products in market
Verified
27+
countries reached
Verified
5.0
Health3 App Store rating
No account-manager layer
You work with the person responsible for the build.
No account-manager relay and no anonymous bench. Vaclav brings 15+ years across fintech, enterprise systems, cloud, and mobile, and stays accountable from the first architecture decision to store delivery and handover.
Meet the engineer behind HLT3Products I own and operate
Proof from software that has to work after launch.
These are products I built and operate—not anonymous client logos. The case studies show the architecture, native integrations, tradeoffs, and production work behind each one.
Live product
Consumer health
Unbuzz
A local-first caffeine tracker with personalized half-life modelling, Apple Watch, widgets, and native health integrations.
iOS shipped · on-device model · native watch surfaces
FlutterDriftRiverpodWidgetKitwatchOS
Read case study 
Live product
AI creator software
Reelry
A web product that orchestrates writing, imagery, animation, voice, and rendering into ready-to-publish short video.
Five-provider pipeline · 30+ styles · 1080×1920 export
Next.jsSupabaseClaudeInngestPolar
Read case study Scope finder
Find the smallest useful way to start.
Choose the outcome closest to yours. The recommendation updates instantly—no email gate and no mystery pricing.
Recommended starting point
Launch Website
Price$500Delivery5–7 days
One distinctive page with a clear offer, proof, contact capture, analytics, and search foundations.
- Custom responsive page
- Contact or booking flow
- Deployment + source
Speed92%
Complexity46%
Control28%
The delivery system
From first call to working build.
A short, visible delivery loop with an accountable senior engineer.
- 01Step 01
Fit call
In 20 minutes I clarify the user, core flow, timeline, and unknowns with you. You leave knowing whether the sprint fits and what happens next.
- 02Step 02
Build in your accounts
The repository, cloud resources, and project board belong to you from day one. You see working software in a recorded Friday demo.
- 03Step 03
Ship and hand over
I deliver installable builds, source code, infrastructure, and written decisions—not a prototype that only runs on my laptop.
Direct answers
Questions buyers ask before a call.
Price, ownership, and fit—the three things worth knowing before a call.
What does it cost to start?
A one-page Launch Website costs $500, a Product Rescue Audit costs $500, the 10-working-day MVP Sprint costs $2,900, and the 15-working-day HIPAA MVP Sprint costs $5,900. Each offer has a published fixed scope and exclusions.
Who owns the code and infrastructure?
The client does. HLT3 Studio creates the repository and infrastructure in the client's accounts from day one, so there is no proprietary platform lock-in or handover cliff.
What happens on the first call?
The 20-minute introduction covers the product goal, current state, must-have scope, timeline, and whether HLT3 Studio is the right fit. If it is not a fit, the studio says so directly; no preparation or complete specification is required.
Your next useful step
Have a website or app that needs to become real?
Talk directly with the senior engineer who would lead the work. In 20 minutes, I'll establish fit with you, identify the biggest unknown, and agree on a useful next step.
No sales handoff. No complete brief required. You keep the code.