Scope
Lock ICP, outcomes, and the lightest useful version before a single screen is designed.
ApplicationBuild a productpeople love
AI-assisted custom code is the default. Senior review before it ships. You own the repo.
The problemWhen you need a real product,not a prototype
An application is software people log into and use every day - not a marketing site, not a Zap. Ideas stall in demos, scopes drift, platforms hit ceilings, and nobody owns the codebase. That is how months disappear without a product users trust.
What looked fine in a demo breaks under real users, real data, and real edge cases. Every week of patches makes the rebuild harder.
Why nowBuild cost dropped.Judgment didn't.
AI-assisted development compressed what a well-scoped product used to cost in time and money. That only helps if the team still knows what to scope, what to cut, and what must be senior-reviewed. We run free Blueprints, lock a flat price, and ship with AI speed plus product judgment - that is why we are the partner for this moment, not another tool stack.
5
Clutch & Upwork
4-6wk
to a focused first version
6
own & co-founded products
20+
apps shipped
Case studiesApplications we'veput to work
Real products for founders and teams - measured in ownership, speed to launch, and systems that hold up after ship.
Free Blueprint, every time
We scope before we build - app map, price, timeline.
Flat project price
Scope locked before the build starts. No surprise growth.
Code and IP are yours
No platform lock-in. You leave with the repo and the docs.
AI-assisted, senior-reviewed
Speed without vibecode debt. Every critical path is reviewed.
After launch
We stay involved so you keep shipping after you go live.
What we offerFrom scope toproduct that ships
We cover the full path - research and strategy through design, build, launch, and growth - scoped to your stage.
Design
Flows and interface craft that feel intentional - high-signal screens, not generic AI templates.
Build
AI-assisted custom code by default, Bubble when the stage calls for it. Weekly demos, fixed scope.
Launch
Test what users will hit, then go live with monitoring, handoff docs, and a clear cutover plan.
Improve
Post-launch iterations from real usage - fixes, features, and performance that compound after day one.
How we use AIAI thatholds up live
AI is the default edge. It stays in your product and in how we build only where it holds up in production.
OutcomesWhat a real productchanges
- A product users can actually try - not another prototype in a drawer
- Locked scope and flat price - no runaway budget or surprise creep
- Code and IP you own, with docs your team can run
- Weeks to launch, not months of speculative build
- Real user feedback instead of internal opinion loops
- A clean stack your next hire or partner can pick up
- We stay involved after launch so you keep shipping
- A clean path off Bubble or vibecode when the ceiling hits
Use casesHighest-ROI outcomesby product type
Pick MVP, platform, or rescue. See the outcomes that usually pay back first - before to after, with why it matters.
MVP
Idea to first users
Auth
Core flow
Feedback
Before
A pitch deck and scattered notes - no product people can try.
After
A scoped MVP live with auth, core flows, and a clear path to feedback.
Why it pays: Real signal in weeks, not months of speculative build.
“1000 users in first 3 months, 20% conversion rate, 2 official sponsors inside first 2 months.”Clutch review
Dr. Vladimir Cvetkovic
Founder, ProSafeNet - a product we co-founded
Why this worksProduct judgment,not just tickets
We build our own products too - so we scope for ownership, speed, and what users actually do. The Eterna Method keeps the build honest from first call to launch.
We ship our own apps
Same craft bar we bring to client work - architecture, UX, and the hard calls that keep a product alive after launch.
Methodical from day one
Validated scope, senior delivery, flat price. You see the approach before you see the invoice grow.
Code and IP you own
No platform lock-in theater. You leave with a product your team - or another partner - can keep shipping.
How we buildNo-code or custom.We pick the lane.
Both lanes ship real products. The choice is stage, ceiling, and how hard you need to own the stack later.
Default lane
AI-assisted custom code
Default for new products that need to scale, integrate deeply, or escape platform ceilings.
CursorClaude CodeNext.jsSupabase
You own the repo. We move fast with AI assistance without shipping vibecode debt.
When it fits
No-code (Bubble)
Strong when speed-to-validate matters, the team already lives in Bubble, or the product fits the platform well.
BubbleXanoAPI connectors
We still spec first. If you later hit the ceiling, we plan a clean migration to owned code.
ProcessHow weship products
Step 1
Blueprint
Free. A strategy call, a deeper call to map requirements, then we present your Blueprint live: what we build, what it costs, when it ships.
Step 2
Build
Fixed-scope sprints with weekly demos. You stay in control of scope; we stay accountable to the plan.
Step 3
Launch + aftercare
After delivery, 2 weeks are free: 1 week of testing and 1 week of fixes. If something doesn't work as agreed, we fix it until it does. Then we stay involved as the product evolves.
StackPractical toolswe ship with
The same lanes we use on our own products - picked for the job, not for a tool fad.
AI-assisted engineering
Cursor
Claude
OpenAI
Senior review on every critical path - speed without vibecode debt.
Product surface
Next.js
TypeScript
Tailwind
Default for owned products that need craft, performance, and room to grow.
Data & backend
Supabase
Xano- Postgres
A real data layer when spreadsheets and plugins stop being enough.
No-code when it fits
Bubble- APIs
Strong for validation and Bubble-native products - with a clean exit path when you outgrow it.
Ship & operate
Vercel
PostHog- Monitoring
Hosting, deploys, and enough ops so launch is not a one-night gamble.
InvestmentClear bands.Scoped outcomes.
Prices are starting bands. Exact scope lands in your free Blueprint after a strategy call.
MVP build
For validating an idea with real users. Core product, flat price, owned code - no extras, still powerhouse.
Starting from
€3.000
Popular
Full product
Validated scope, competitive features, ready to acquire users - engineered to scale.
Starting from
€8.000
Enterprise platform
For businesses and founders building multi-sided platforms, AI-native tools, or enterprise-grade products.
Starting from
€15.000
Need ongoing releases after launch? We stay involved after launch - scoped by outcomes, not vague hours.
“He went above and beyond to bring our vision to life - not only executing what we asked for, but offering suggestions that improved the design and functionality.”Upwork review
Stefanie Herbert
Co-founder, Relative Innovations
Client storiesWhat clients sayafter we ship the product
Overall, the team has performed betterthan any other projectI've worked on in the IT industry.Clutch review
Radu Antohe
Founder, PublicLink
Stefanie Herbert
Co-founder, Relative Innovations
“Working with Marko has been an incredible experience from start to finish. He went above and beyond to bring our vision for our CRM platform to life not only executing what we asked for, but also offering valuable suggestions that improved the overall design and functionality.”
Tania Espinoza
Founder & CEO, Global 8 Connect
“Communication was outstanding from day one. Despite the time zone difference they resolved doubts in less than 24 hours, and their strategic recommendations helped streamline our MVP launch.”
Stefan Petricevic
Founder, FacelessStar
“Weekly Loom updates helped me to always know where things stood without chasing anyone, also with Notion portal was a game changer - all decisions, files, tasks in one place. These guys have good processes”
Miloš Djordjevic
Founder & CEO, Stretch Well - a product we co-founded
“This platform lets us help the thousands of followers who couldn't access our stretching services before - with our own app. The whole process was cool, and the team solved all the technical challenges we worried about, especially around video security.”
QuestionsApplication FAQfor founders and teams
Ask AI about us
Want to know more?
Free resourcesTools and postsfor your first build
Tools
Tool
Product cost calculator
Guided estimate for scope and budget in a few minutes.
For: Anyone scoping an app, automation, or website
Guides and templates
Guide
No-code and vibecode migration guide
Stay, hybrid, or full migrate - with a phase checklist.
For: Founders on Bubble or a fragile AI prototype
Template
Validation landing page
Free landing page layout to test demand before you build.
For: Founders testing an idea before a full product
Posts
Post
No-code vs vibecode vs AI-assisted custom: which path wins?
No-code and vibecode are for prototypes. If you will keep the product, build AI-assisted custom code - Cursor or Claude Code, a repo, tests, and review. Time-to-first-version is no longer a huge gap. What you own in twelve months is.
For: Application
Post
Research vs validation: which one do you need first?
Research builds understanding. Validation tests whether someone will pay. Most teams need both - in the right order.
For: Application
Post
Prove the problem before you build: product research that actually gets used
Skip research and you validate with the wrong people. This framework covers ICP, problem severity, alternatives, and when you are actually ready to validate a solution.
For: Application
Ready to build a product that grows?
Book a free 30-minute strategy call. We will confirm fit and whether a Blueprint or a lighter next step makes sense.