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English
$
USD
I will build your web app mvp, landing page or android app with ai features
Kristian S.
About this gig
Have an idea and need something real to show investors, users or your boss? I build working MVPs fast.
What you get:
- A responsive web app or landing page (Next.js, React, Tailwind), or a mobile app (React Native / Expo)
- Real features, not mockups: login, forms, database, payments (Stripe), AI chat or generation
- Deployed live on Cloudflare or Vercel with your domain, or a signed Android build ready for Google Play
- Full source code on GitHub, plus a short walkthrough video
Good fit for: SaaS validation and investor demos, AI tools (chat with your docs, generators, analyzers), booking, marketplace, dashboard or internal tools, landing pages with waitlist.
Recent work:
- PetZone: pet-care app on Google Play with Firebase auth, real-time chat, marketplace, bookings and subscriptions
- Multiplayer karaoke web app: real-time rooms, QR join from phones, Cloudflare Workers + D1 (live, public)
- AI car diagnostics app and an AI beauty app that analyzes a selfie and generates looks
I use AI-assisted development, so a typical MVP takes days, not months. I'll be honest about what fits your budget.
Message me with your idea before ordering. I reply within a few hours.
Get to know Kristian S.
Kristian S.
Full Stack Developer, Python Automation, Web and Android Apps, AI
- FromCroatia
- Member sinceJul 2026
Languages
Croatian, English
I build working software fast: Python automation, web app MVPs, Android apps and AI features. Python: scrapers, data pipelines, file processing, Excel and Sheets reports, scheduled jobs. Web: Next.js, React, TypeScript, deployed on Cloudflare or Vercel. Mobile: React Native / Expo, from prototype to Google Play (my own app PetZone is live). AI: Claude and OpenAI APIs for chat, extraction and image analysis. AI-assisted development means small tasks take hours and MVPs take days. Clear scope, code on GitHub, a video of every delivery. Message me and you get a plan and a fixed price fast.
FAQ
Which tech stack do you use?
Next.js / React, TypeScript, Tailwind, deployed on Cloudflare or Vercel, with Postgres, D1, Supabase or Firebase. React Native + Expo for mobile. Python backend if needed.
Can you add AI features?
Yes. I integrate Claude or OpenAI APIs for chat, summarization, text generation, classification and image analysis.
Do I need my own hosting?
No, I deploy it for you. Cloudflare, Vercel or Firebase free tiers cover most MVPs, so you usually pay nothing for hosting at the start.
Can you build for iOS too?
Yes, Expo builds for iOS as well, but you need your own Apple developer account for App Store publishing. Message me and we will sort out the details.
