Engineering, Design & Strategy — shipping since 2022

We build web products, games and brands that scale.

KAYFSTORE is a small, senior studio delivering full-stack web development, game development, premium design and 1:1 strategy sessions for founders moving real revenue.

120+
Projects shipped
4.9/5
Client rating
24h
Avg. reply time
Global
Clients worldwide

Tools & platforms we ship with

Next.jsReactTypeScriptTailwind CSSNode.jsSupabasePostgreSQLPrismaUnityUnreal EngineFigmaFramer MotionThree.jsPayPalStripeVercelNext.jsReactTypeScriptTailwind CSSNode.jsSupabasePostgreSQLPrismaUnityUnreal EngineFigmaFramer MotionThree.jsPayPalStripeVercel

What we do

A senior studio built for serious operators.

Four focused services. One team of senior engineers, designers and strategists. We pick projects carefully so every client gets founder-level attention.

Web Development

Modern web products that convert.

Full-stack web apps, SaaS dashboards, marketing sites and e-commerce — built with Next.js, TypeScript and Tailwind. Performance, SEO and conversion baked in.

  • Next.js / React / TypeScript
  • Supabase · Prisma · Postgres
  • Stripe / PayPal integrations
  • Pixel-perfect from Figma
Milestone-based · PayPal-securedStart here
Game Development

From prototype to polished release.

Custom gameplay systems, UI, multiplayer logic, and full indie titles for PC and web. We ship what you can actually launch.

  • Unity · Unreal · custom engines
  • Multiplayer / netcode
  • Game UI & UX
  • Steam / Epic readiness
Milestone-based · PayPal-securedStart here
Design Services

Interfaces that look premium and feel effortless.

Product UI/UX, brand identity, landing pages and marketing visuals. Designed for conversion, not just decoration.

  • Figma product design
  • Brand identity & logos
  • Landing pages that convert
  • Design systems
Milestone-based · PayPal-securedStart here
Consulting & Strategy

Technical strategy sessions for founders.

1:1 consulting, architecture reviews, roadmap planning and growth strategy sessions for teams moving real revenue.

  • 90-minute strategy calls
  • Architecture & scale audits
  • Hiring & team structure
  • Go-to-market & pricing
Milestone-based · PayPal-securedStart here

How we work

A calm, predictable 4-step process.

No mystery. No black boxes. You always know what we're doing, what's next, and what it costs.

Step 01

Discover

Intro call, scope mapping, goal alignment. We only take projects we can genuinely win at.

Step 02

Design

UX flows, UI in Figma, technical architecture. You sign off before we write production code.

Step 03

Build

Milestone-based delivery with weekly updates. You pay per milestone, never blind.

Step 04

Ship

Launch, monitor, iterate. We hand over documentation, access and training — no lock-in.

Why KAYFSTORE

Built for founders who hate surprises.

We work the way we'd want a studio to work with us: clear scope, transparent pricing, protected payments, and a real person you can message at any step.

Senior team, no juniors

Every line of code and every pixel is shipped by a senior specialist. No outsourcing, no proxy contractors.

Milestone-based billing

You pay per completed milestone via PayPal. Never upfront-in-full, never for work you haven't seen.

PayPal buyer protection

All payments run through PayPal. You're covered by PayPal Buyer Protection on every invoice.

24h average reply time

Async-friendly, but never ghosted. Dedicated channel, weekly status, real humans on the other side.

Global delivery

Clients across EU, US, UK, LATAM and Asia. English-first communication, EUR / USD / GBP invoicing.

You own everything

Full IP transfer on final payment. Clean handover — source, assets, credentials, documentation.

Selected work

Real outcomes, not just screenshots.

Request full case studies
Web

Fintech operator dashboard

Outcome: +38% retention in 60 days

NDA-protected · details on requestGet a similar build
Game

Indie PC roguelite

Outcome: Shipped to Steam on schedule

NDA-protected · details on requestGet a similar build
Design

B2B SaaS brand refresh

Outcome: 2× paid conversion on landing

NDA-protected · details on requestGet a similar build
Consulting

Scaling strategy for a 7-figure founder

Outcome: Cut infra cost 41% in one quarter

NDA-protected · details on requestGet a similar build

Questions

Answers before you even ask.

Most of our clients ask the same things. Here are the honest answers — don't see yours? Just message us.

Every project is split into clear milestones. You pay per milestone via PayPal — typically a small deposit to start, then progress payments at agreed checkpoints, and a final payment on delivery. No upfront-in-full, no surprise invoices.

PayPal gives both sides strong buyer / seller protection, instant international payouts, and a dispute process we can stand behind. We optimise around it so clients feel safe sending four- or five-figure invoices.

You can. You are only charged for completed milestones and a fair pro-rata on work in progress. Pre-paid unused funds are refunded to your PayPal. Full details are in our Refund Policy.

You do. On final payment for a milestone, full IP for the custom work we produced for you transfers to you. We retain rights only to our internal reusable tooling, and only if you explicitly opt in we mention the project in our portfolio.

Yes, both mutual and one-way NDAs are standard for us. Most work we do is under NDA — that is why case studies on this page are anonymised.

Average reply time is under 24 hours, usually much faster within European business hours. Active projects get a dedicated channel (Slack, Discord, or email — your choice) with daily or weekly status depending on cadence.

A 90-minute focused call over Zoom or Google Meet. You send context in advance, we prepare, and you walk away with a written summary, specific recommendations, and next-step roadmap — not just vibes.

We fix it at no extra cost as long as it falls within the agreed scope. If the gap is bigger than that, we offer a clear path: revise scope, refund pro-rata, or both. Our goal is a happy client who comes back, not a PayPal dispute.

Still unsure? Send us a message — we reply fast.

Accepting 2 new projects this month

Let's build something worth shipping.

Tell us about the project. We reply within 24 hours with an honest take on scope, timeline and budget — no sales theatre, no boilerplate decks.

Payments via PayPal — buyer-protectedMilestone-based, cancel anytimeNDA on request

Prefer a quick call? Link your calendar in the first message and we will propose slots that work for your timezone.