I · Prototype
Mobile prototype
₺ 8.000 – 18.000USD 240 – 550
- Timeline
- 1 – 2 weeks
- Deliverables
- 3 – 5 screen working prototype
- iOS and Android tested
- Instant preview via Expo Go
- Stack
- React NativeExpoTypeScript
Est. 2023
AI-native
mobile and web products.
I build well-designed mobile and web products — end to end, for founders and brands that care about the detail.
UpworkVerified freelancer profile
GitHub@Mbar1s · open source
24h ResponseWeekdays, Ankara time
03yrsIndependent practice
03appsMobile apps shipped
02sitesWeb projects delivered
24hResponse time
— 01Services
Clear offers. Fixed scope, fixed price.
II · MVP
Mobile app MVP
₺ 30.000 – 70.000USD 900 – 2,100
- Timeline
- 4 – 6 weeks
- Deliverables
- iOS and Android from one codebase
- Auth, basic payments, push notifications
- AI integration (Claude, OpenAI, etc.)
- Support through App Store submission
- Stack
- React NativeExpoSupabaseTypeScript
III · Full App
Full mobile app
₺ 100.000+USD 3,000+
- Timeline
- 8 weeks+, monthly retainer
- Deliverables
- Design system + full application
- Admin panel, analytics, backend
- App Store + Google Play release
- 30-day post-launch care
- Stack
- React NativeExpoSupabaseNext.js API
I · Landing
Landing page
₺ 6.000 – 15.000USD 180 – 450
- Timeline
- 1 – 2 weeks
- Deliverables
- Single-page design + build
- Responsive with form + email wiring
- Basic SEO and analytics
- Deployed on Vercel
- Stack
- Next.jsTailwindVercel
II · Site
Multi-page site
₺ 18.000 – 40.000USD 540 – 1,200
- Timeline
- 2 – 3 weeks
- Deliverables
- 4 – 8 pages, corporate or portfolio
- CMS-backed content management
- SEO, analytics, contact form
- Responsive, Lighthouse 95+
- Stack
- Next.jsTailwindSanityVercel
III · Web App
Web application
₺ 60.000+USD 1,800+
- Timeline
- 5 weeks+
- Deliverables
- Auth, payments, admin panel
- Custom business logic and API integrations
- AI feature integration (optional)
- 30-day post-launch care
- Stack
- Next.jsPostgresSupabaseTailwind
Building something with AI?See AI integration services →
The site puts my work first and quietly disappears behind it. That's exactly what I wanted — silent but solid.
Öykü Işıl KışlaContemporary artist
He understood what we actually needed and didn't pad the work. Delivered on the promised date and stayed easy to reach afterwards.
Serkan KaraağaçAlpkan Teknoloji
— 02Selected work
Real projects, real constraints.
Aril
01 / 04ProblemFinding a gift that actually fits the recipient takes hours of research; generic lists never feel personal.
StackReact Native · Expo · Claude API · Supabase
OutcomeA personalized gift list generated in under a minute from a few short prompts — running on iOS and Android.
01Taste profile
02Gift search
03Match detailPullu
02 / 04ProblemPhysical stamps feel dated, digital stickers feel hollow. People want something in between — consistent and shareable.
StackReact Native · Expo · Canvas rendering · Supabase
OutcomeA mobile app for creating and sharing custom stamps that still feel like stamps.
01Library
02Album
03PassportÜRE
03 / 04ProblemKids don't want the same story twice; parents struggle to find a good new one every night.
StackReact Native · Expo · Claude API · image + audio generation
OutcomePersonalized stories with matching visuals and narration, generated to each child's taste — on demand, in seconds.
01Story scene
02Dice roll
03My storiesPill Reminder Kit
04 / 04ProblemMultiple medications, shifting times and dose rules make tracking fragile; most apps remind you but never produce data you can actually take to the doctor.
StackReact Native · Expo · Claude API · Supabase
OutcomeAn iOS app that scans medications from a label, logs daily doses in one tap and produces a one-page doctor PDF.
01Today
02Scan label
03StatsÖykü Işıl Kışla
01 / 04ProblemA quiet portfolio site that brought the exhibition aesthetic online and let the work sit front and centre.
StackNext.js · Tailwind · Vercel
OutcomeA fast-loading portfolio site fully in the artist's control, shipped in two weeks.
01Home
02Works
03ExhibitionsAlpkan Teknoloji
02 / 04ProblemA credible B2B web presence with a clear product catalogue and contact path for corporate buyers.
StackNext.js · Tailwind · Vercel
OutcomeLive at alpkanteknoloji.com — product catalogue, quote form, multi-page structure.
01Home
02Products
03ContactLess Ordinary Studio
03 / 04ProblemLess Ordinary Studio needed an identity that wasn't sterile like a gallery site or cluttered like a magazine — one voice across exhibitions, conversations and brand collaborations.
StackNext.js · Tailwind · Vercel
OutcomeA typography-led identity and page system, live at lostweb.vercel.app.
01Manifesto
02Collaborations
03ExhibitionPill Reminder Kit — site
04 / 04ProblemWhere competitors in the medication category lean on bright colour and aggressive CTAs, the brief was to extend the app's calm tone into the site and convert from trust rather than pressure.
StackNext.js · Tailwind · Vercel
OutcomeA live one-page marketing site at pillreminderkit.com that inherits the app's dark palette and serif emphasis system, with a three-tier pricing section.
01Hero
02Snap flow
03Adherence— 03Process
Three phases. No surprises.
Phase 1 · 1 – 2 weeks
Discovery
We agree on the problem, the audience and the constraints. Before any code: a written brief and a one-page product definition.
- Stakeholder interviews
- Scope + price agreement
- Weekly rhythm set
Phase 2 · 4 – 9 weeks
Build
Design and engineering in parallel. You see a working build every week; course corrections stay cheap.
- Weekly live demo
- Shared Linear + Figma
- Fixed sprint, flexible scope
Phase 3 · 1 – 2 weeks
Handoff
Code, infrastructure and docs are transferred into your name. Continue with your own team or stay on retainer.
- Repo + infra transfer
- Loom training library
- 30-day post-launch care
Ember · ASCII dragon · Ankara, 2026
— 04Who you're hiring
Mustafa Barış İmdat. An independent mobile and web developer based in Ankara. Since 2023 I've been building React Native apps and Next.js websites — for founders, artists and small businesses.
Most of the work happens before code: solving the right problem in the right order. Every project starts with a discovery call and ends with a handoff week, with something working to show every Friday in between.
EducationHacettepe Üniversitesi
NowData Analyst, Vodafone
Network Change Management
Network Change Management
InterestsGaming, AI, the gym
LanguagesTürkçe · English · 日本語 (beginner)
LocationAnkara, Türkiye
Remote, worldwide
Remote, worldwide
— 05Frequently asked questions
Let's clear things up before we start.
How long does a project take?
Before any code there's a 1–2 week discovery phase: we define the problem, scope, and constraints together, then lock in a written agreement. On top of that, add 1–2 weeks for a prototype, 4–6 weeks for an MVP, or 8+ weeks for a full application. The exact timeline depends on scope, but I put a written schedule in place before any work begins.
Do you work with a contract?
Yes. Every project starts with a written brief and a scope-and-price agreement. For international clients I use DocuSign or a similar tool; for local projects I prefer a bilingual PDF. The contract covers deliverables, payment milestones, and IP transfer. I don't start without signatures — that protection matters for both sides.
Do you handle App Store and Play submission?
Yes — store submission is included in the MVP and Full tiers. We put the screenshots and store listing together, and I manage the technical submission. The developer accounts belong to you: Apple Developer Program is $99/year, Google Play is a one-time $25. You'll need to create those accounts in your own name; if they already exist, we use them directly.
Who covers the AI API costs?
The API account and usage costs are yours. During discovery I estimate expected cost per user, then design the integration around predictable spend — prompt caching, rate limits, and fallbacks built in from the start. I monitor usage together with you through the first month after launch, so we can catch anything unexpected early.
Who owns the source code?
On final payment, 100% of the code is yours. The repo transfers to your GitHub organisation; infrastructure like Vercel and Supabase is either transferred or recreated under your accounts. All of this is spelled out in the contract. During the handoff week I set everything up in your name — after that you can continue with whatever team you like.
— 06Have a good idea?
Have a good idea?
Let's talk.
A 30-minute intro call first. I listen, we confirm budget and timing. If it isn't a fit, I'll point you somewhere that is.