See your app working in 5 days, before you commit.
Real software, built with AI, reviewed by senior engineers. Tell us your idea on a free call, and we turn it into a Clickable Prototype you can try before you sign anything.
Every project starts with a free Scope Call. Begin with a Clickable Prototype or a Code Audit, then build in milestones, each with a fixed price agreed in writing.
~5 business days
Clickable Prototype
$100–$300By scope · credited if you continue
ForFounders who want to click through their product before paying for the build.
A typical agency needs 4–6 months for the same MVP. AI writes the code; a senior developer reviews every change.
PoC in 2 weeks
Validate your idea with a working proof-of-concept before committing budget.
Fast production launches
Production-grade delivery: tested, monitored and ready to scale on day one.
Try it
From a prompt to a working screen
Pick a request and watch the agent assemble the interface. In a real build, every generated screen is then specced, tested and reviewed by a developer.
Choose a prompt
›Parse prompt → intent + entities
·Choose layout pattern
·Generate components
·Apply design tokens
·Wire interactions + states
·Screen ready · sent for dev review
Tuesday, 7:12 am
Today
Move
486/620 kcal
Exercise
24/40 min
Stand
9/12 h
Steps · last 7 days8,432 today
W
T
F
S
S
M
T
Upper bodyStrength35 min
Yoga flowMobility20 min
Start workout
The difference
Months of work, compressed into weeks
A typical agency build vs an AI-native build with a supervised agent loop, across the phases that usually eat your timeline.
TraditionalNexera AI
Idea → first working prototype
4–6 weeks
~5 business days
Prototype → launchable MVP
4–6 months
2–4 weeks
Change request → shipped
1–2 weeks
1–2 days
Within 24 h
Ballpark + scope in writing
Tested
Every feature ships with passing tests
1–2 devs
A senior pair, not a billing pyramid
Ranges reflect typical small-to-mid product scopes. Your numbers depend on complexity. Each milestone gets a fixed price in writing before it starts.
Cost comparison
What a typical MVP costs
The same small-to-mid MVP, built three ways.
What a typical MVP costs
Compared on
Typical agency
Freelancer
Nexera AI
Typical cost
$40k–80k
$10k–25k
$4.5k–9k
Time to launch
4–6 months
2–4 months
2–4 weeks
Who reviews quality
A QA team, if it's in the budget
Usually self-reviewed
A senior developer reviews every merge
Tests included
Often billed separately
Rarely
Yes, with every feature
Code ownership
Usually yours, check the contract
Yours, if agreed in writing
Yours, in your repo from day one
If someone leaves
The agency reassigns staff
The project can stall
Specs, tests and docs make handover simple
Agency and freelancer figures are typical market ranges for a small-to-mid MVP, not quotes. Your Nexera AI price is fixed per milestone, in writing, before each milestone starts.
Our method
Not vibe coding. Engineered AI.
Anyone can prompt an AI into a demo. We run a disciplined loop: every feature starts as written requirements, becomes a spec, ships with tests, and only passes when it meets explicit acceptance criteria.
AI builds, developers supervise
AI does the heavy lifting under the review of a small senior team — often just one or two developers steering and approving — instead of a full engineering department. You get the output of a team at a fraction of the cost and time.
01Step
Requirements
We capture what the system must do in plain, reviewable language — no ambiguity for the AI to invent around.
02Step
Specs
Each requirement becomes a precise technical spec the AI implements against, scoped and traceable.
03Step
Tests
Automated tests are written alongside the code so behaviour is verified, not assumed.
04Step
Acceptance criteria
Nothing ships until it meets explicit, signed-off criteria — the developer is the final gate.
InvestKit is built and run by our co-founder with the same AI method we sell. It's live and open to the public, so you can judge the work for yourself.
invest-kit.com
InvestKit2025
OverviewAssetsTaxesIncome
Portfolio value
Tax for 2025
₴4,918
✓ F1 + XML ready
Buy12.03.2024 · NBU 39.60
→
Sell04.11.2025 · NBU 41.30
Stylised illustration based on the public demo.
In-house build · Web app · Personal finance
InvestKit
Investment tracking for Ukrainian investors: every broker and asset in one journal, with the annual tax declaration prepared from it.
Ukrainian investors declare investment income themselves every year. With accounts at several brokers, that means converting each trade, coupon and dividend at the National Bank rate for its date, matching lots FIFO and rebuilding a year of statements in a spreadsheet.
What we built
One journal for US stocks, government and private bonds, real-estate funds, deposits and cash.
Statement import for Interactive Brokers, Inzhur and generic CSV. Re-importing a file never duplicates trades.
A tax module that calculates every lot at historical NBU rates and fills the F1 appendix and tax-office XML in the browser.
Analytics: value against benchmarks, XIRR / TWR, allocation and a 12-month income forecast.
Security built in: Google sign-in, Postgres row-level security, EU-hosted data and an append-only audit log.
Stack
Next.js
Supabase · Postgres
Google sign-in
Vercel
LiqPay
Outcome
Live at invest-kit.com in Ukrainian and English, with a public demo, a free plan and a Pro tier.
Don't see your industry here? Most of our client work is under NDA, and we keep it that way. On a call, we're happy to walk you through relevant experience, anonymised.
Concept screens that show the kind of product we build. These are illustrations, not client projects.
ops.yourstore.com
Orders overview
Last 30 days
▲ 18.4%
Orders
12,480
Avg. time
31 min
CSAT
4.8 / 5
Web app
Operations dashboard
Next.js
Postgres
Stripe
Arriving in12 min
M
Marco
E-bike · 1.2 km away
Order confirmed5:42 pm
Picked up5:58 pm
On the waynow
Delivered~6:10 pm
Mobile app
Live order tracking
React Native
Maps
Push
AI
Support agent
Online · replies instantly
Where's my order #4821? It was due yesterday.
orders.lookup(4821) · carrier.track()
Found it: it left the depot this morning and arrives today by 6 pm. I've added a $5 credit for the delay.
✓ Resolved in 1.4sCredit within policy
Type a message…↑
AI agent
Support agent with tools
LLM
Tool calling
Evals
Tech stack & AI tools
Mainstream tools, picked for your product
Proven, widely supported technology — so your product is easy to maintain and easy to hire for later.
Frontend
React
Next.js
Angular
Vue
TypeScript
Tailwind CSS
Mobile
React Native
Expo
Swift
Kotlin
Backend
Node.js
Python
.NET
PostgreSQL
Redis
GraphQL
REST APIs
Cloud & DevOps
AWS
Google Cloud
Vercel
Docker
GitHub Actions
CI/CD
AI
OpenAI
Anthropic Claude
Claude Code
Codex
Open-source LLMs
RAG
Vector DBs
Evals
Which AI tools see your code?
Only AI services on enterprise or API plans with training opt-out, so your code and data are never used to train models. Client code never goes into consumer chat apps. On request we use your own accounts and keys, or self-hosted open-source models.
Already have a stack? We work inside your existing setup, tools and conventions.
Security & quality
Fast, without cutting corners
Speed only matters if the result is safe to run. These are standard on every engagement.
You own everything
Code, repositories, infrastructure and docs are transferred to you. No lock-in, no licensing surprises.
NDA before kickoff
We sign your NDA, or ours, before any project details change hands.
Tested by default
Unit, integration and end-to-end tests ship with every feature and run on every commit.
Human-reviewed merges
A senior developer reads and approves every change the AI writes before it reaches main.
Security scanning in CI
Dependency audits, secret scanning and OWASP checks run automatically on each build.
Private-by-default AI
We use enterprise AI plans with training opt-outs, so your code and data are never used to train models.
Every merge passes✓Lint✓Type check✓Unit tests✓E2E tests✓Security scan✓Human review
Less risk for you
How we reduce your risk
Trying a new studio shouldn't feel like a gamble. These commitments come with every engagement.
Fixed price per milestone
Each milestone gets a fixed price and timeline in writing before it starts. No surprise invoices.
Pay as it's delivered
You pay per milestone, as working software is delivered.
Your repo from day one
Code lives in your repository from the first commit, so progress is always visible.
30-day bug-fix warranty
Bugs found in the 30 days after launch are fixed at no extra cost.
Pause or stop anytime
Give 2 weeks' notice to pause or stop, and keep everything built and paid for so far.
The team
Two senior engineers. No layers.
You work directly with the people who write your code — no account managers, no hand-offs.
SC
Stanislav Cheslavskyi
Co-founder & CEO
12+ years · full-stack
Runs discovery, scoping and delivery, so you always have one clear point of contact. Also writes production code.
Plans run month to month, so you can scale up or down as your product changes. Need a developer full-time? See the Dedicated Developer package above.
Ballpark calculator
Get a ballpark in 30 seconds
Adjust the scope for a rough timeline and budget range. After a free Scope Call, you get a fixed price for the first milestone in writing.
8
Timeline
3–4 wks
Ballpark budget
$3k–$4.5k
Traditional3–4 months
Nexera AI
3–4 wks
A rough range, not a quote. After a free Scope Call, each milestone gets a fixed price in writing before it starts.
Free resource
The MVP launch checklist
The 15 checks we run before an MVP goes live — from scope to the first month after launch. Useful with us or without us.
FAQ
Questions, answered
Everything you need to know about working with an AI-native studio.
Most MVPs and PoCs ship in 2–4 weeks. Before that, you can click through a Clickable Prototype about 5 business days after the Scope Call.
It's a UI-only version of your product with realistic sample data that you can click through on a phone or laptop. It costs $100–300 depending on scope, takes about 5 business days after the Scope Call, and the fee is credited in full if you go on to build with us.
You keep screenshots and a PDF walkthrough of every screen. The code and the live preview stay with us, and the preview link expires. If you sign, the fee is credited and the prototype becomes the first step of your build.
Yes, that's AI App Rescue. It starts with a $300 Code Audit, delivered in 3 business days: a written report on security holes, what to keep and what to rebuild, plus a milestone plan. The audit fee is credited if you continue with us.
AI-native development means AI agents write most of the code against written requirements, specs and automated tests, and a senior engineer reviews every change before it merges. That is how a small senior team ships an MVP in 2–4 weeks.
Yes. We deliver websites, web apps and native/cross-platform mobile apps, plus the AI features that power them.
You do. Once a milestone is paid, you own all of its source code, infrastructure and documentation.
Yes. The PoC is built in your repository against specs and tests, so the next milestone extends the same code: we add authentication, monitoring and CI/CD rather than rewriting it.
A Clickable Prototype costs $100–300 and a Code Audit $300. An AI Feature Integration starts from $1,500, a PoC Sprint from $2,400 and an MVP Launch from $4,500. A full-time Dedicated Developer starts from $35/hour, and Support Plans start from $150 a month.
We split the build into milestones, each with its own deliverables and acceptance criteria. Before a milestone starts, you get a fixed price for it in writing. Later milestones carry a ballpark until we price them, so the price only moves when the scope does.
The Scope Call is free. A Clickable Prototype or Code Audit is invoiced after the call, and work starts once it's paid. Builds are billed per milestone against the written scope, and Support Plans are invoiced monthly.
We work European business hours with daily overlap for teams in the Americas. Day to day we talk in Slack or Teams, yours or ours, with a weekly demo of working software and short written updates in between.
Sometimes it will, which is why it never ships unsupervised. Every change is checked against its spec, covered by automated tests and reviewed by a senior developer, and nothing is accepted until it meets the agreed acceptance criteria.
Only providers we use through enterprise or API plans with training opt-out, so your code is never used to train models, and never consumer chat apps. On request we work with your own accounts and API keys, or with self-hosted open-source models.
Yes. We can review and improve an existing codebase, add senior capacity to your team, or deliver white-label under your brand, following your stack, tools and review process.
Get started
Book a free Scope Call
Tell us what you're building. A senior developer replies within one business day and sets up a free 30-minute Scope Call. After it, you get a ballpark for the whole project and a fixed price for the first step.