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$
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I will build an ai mobile app in flutter, flutterflow with openai, gemini for both os
Joy B
Level 2
About this gig
I build AI-powered Flutter & FlutterFlow apps that launch fast and scale smart.
Hey, I'm Joy Barmon a Fullstack developer with over than 7+ years of experience.
Startups, SaaS founders, and entrepreneurs hire me to turn ideas into polished iOS & Android apps powered by OpenAI, Gemini, or custom ML models.
WHAT I BUILD:
- AI Chatbots & Voice Assistants (GPT-4, Gemini, Claude)
- SaaS apps with Stripe/RevenueCat subscriptions
- CRM, Project & Task Management Tools
- E-commerce & Multi-Vendor Marketplaces
- Health, Fitness & Habit Tracker Apps
- MVP / Startup Apps (launch-ready in weeks)
TECH STACK:
Flutter FlutterFlow Firebase Supabase Dart REST APIs OpenAI Gemini Vertex AI
EVERY PROJECT INCLUDES:
- Pixel-perfect UI from Figma or scratch
- Auth, push notifications & analytics
- App Store & Play Store deployment
- Clean, documented & scalable code
MESSAGE ME FIRST with your app idea, features & target platform.
Get to know Joy B
Joy B
Data Mining Expert, Python Web Scraper, Medical and B2B Research
Level 2
- FromBangladesh
- Member sinceApr 2021
- Avg. response time1 hour
- Last delivery3 days
Languages
Bengali, English
Hi, I’m Joy Barmon, a Level 2 Seller with 7+ years of experience bridging the gap between data and technology. I specialize in Python Web Scraping, B2B Lead Generation, and specialized Data Research. Beyond data, I develop custom Chrome Extensions and high-performance AI Mobile Apps/SaaS using FlutterFlow and React Native. Need to optimize your workflow? I provide expert AI Prompt Engineering for ChatGPT-5o and Midjourney. From verified email lists to custom automation tools, I deliver accurate, CRM-ready results. Let’s scale your business with data-driven tech solutions!
My Portfolio
FAQ
Can you build my app idea from scratch?
Absolutely! I've built 50+ apps from concept to launch. Send me your idea, wireframes, or reference apps and I'll provide a detailed scope and timeline within 24 hours — free consultation.
Do you work with FlutterFlow or custom Flutter code?
Both! FlutterFlow for rapid MVP development (2-3x faster). Custom Flutter/Dart for complex logic, animations, and performance-critical features. I recommend the best approach for your project.
Can you integrate AI features like ChatGPT?
Yes! I integrate OpenAI GPT, Google Gemini, and custom ML models. Smart assistants, content generation, image recognition, chatbots, and recommendation engines — all built natively into your app.
Will my app work on both iOS and Android?
Yes. Flutter builds from a single codebase that deploys natively to both platforms. Same performance as native apps, half the development time and cost.
Can you add subscription payments to my app?
Yes! I integrate Stripe and RevenueCat for subscription billing, one-time purchases, free trials, and in-app purchases. Full payment flow with webhook handling and receipt validation.
Do you handle App Store and Play Store publishing?
Yes. I prepare all assets, screenshots, descriptions, and handle the full submission process. I also address any review rejections until your app is live on both stores.
What backend do you use?
Firebase for real-time apps (chat, live data, push notifications). Supabase for SQL-based apps (SaaS, dashboards, complex queries). Both are scalable, secure, and cost-effective.
Can you convert my Figma design into a working app?
Yes! I do pixel-perfect Figma-to-Flutter conversions. Send me your Figma file and I'll match every design detail — fonts, colors, spacing, animations — exactly as designed.
Do I get the source code?
Yes, with Standard and Premium packages. You receive the full Flutter/Dart project with clean, documented code. You own it completely and can modify or extend it.
What happens after delivery?
All packages include post-delivery support (3-30 days). I fix any bugs, answer questions, and ensure everything runs smoothly. Extended maintenance plans are also available.
