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$
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I will do mobile app development, ios app development, app creation, flutter developer
Sajidur
Level 2
7 orders in queue
5.0
5.0
What people loved about this freelancer
elvin_suarez
United States
I’m extremely satisfied with the Habit Tracker app. The dark-themed design looks modern and premium, and the overall user experience is smooth and well organized....
cooper_rankin
United States
He explained the entire app development process in a very simple and clear way, from planning and UI/UX design to development, testing, and deployment. I finally...
bettyrortiz
United States
Sajidur did an excellent job developing our Flutter app for both Android and iOS. The UI/UX is clean, modern, and very user-friendly. He implemented a secure...
annakingdawson
United States
I’d like to express my sincere gratitude for the role you played in this app project. Your consistent communication, dedication, and the overall standard of...
About this gig
Hello there,
You might find it interesting to hear our Mobile app development story. I am Sajidur Rahman, a Mobile App & Flutter Developer with 5+ years of experience in mobile app development and full-stack solutions.
I turn your idea into a fast, secure, and scalable mobile app with AI Integrations for Android & iOS, designed with modern UI/UX and built for performance, growth, and real users.
I build:
- Custom mobile app (unique features, dynamic screens)
- Flutter apps for Android & iOS
- Modern UI/UX (Figma)
- Secure backend & REST APIs
- Authentication (E-mail / Google / Apple)
- Push notifications & in-app purchases
- Admin dashboards & cloud storage
- App Store & Play Store - app builder
Tech Stack:
- Flutter, Dart
- Backend: Node.js, Laravel, Firebase
- Database: Firestore, MySQL, MongoDB
- Tools: Figma, GitHub, CI/CD
Process:
- Requirement analysis & wireframes
- UI/UX design
- Sprint-based development
- QA testing
- App Store & Play Store launch
- Post-launch support
Let's build a product your user will love. Send a message with your feature list or MVP goals to get a fast, realistic quote.
Get to know Sajidur
Sajidur
Professional Mobile App Development Building High Quality Mobile Apps
Level 2
- FromBangladesh
- Member sinceSep 2025
- Avg. response time1 hour
- Last deliveryabout 4 hours
Languages
Bengali, English
Hey, I’m Sajidur Rahman. You can call me an AI Mobile App & Full-Stack Developer with 5+ years of experience in mobile app & web development. I build fast, secure, and user-friendly iOS/Android & Flutter apps, websites, and AI-powered solutions with modern UI/UX (Figma). From design to development, testing, deployment, and support. I deliver complete, high-quality digital products that help businesses grow. Let's connect to build your empire
My Portfolio
FAQ
Will you publish the app to the App Store/Play Store?
Yes available as an extra. I handle bundle IDs, signing, screenshots, and submissions.
What do you need to start?
A brief feature list or reference apps, any brand assets, and (if available) API docs. See “Requirements” below.
Do you build AI-powered mobile apps?
Yes. I specialize in AI mobile app development, including AI chatbots, LLM integrations, and smart automation features for iOS and Android apps.
Can you integrate AI APIs like OpenAI or ChatGPT?
Absolutely. I can integrate OpenAI, ChatGPT, and custom AI APIs into mobile and web applications.
Will the app work on both iOS and Android?
Yes. I use Flutter to build cross-platform apps that work smoothly on both iOS and Android from a single codebase.
Do you provide app source code?
Yes. You will receive complete source code and full ownership after project delivery.
Can you develop a wallet or fintech mobile app?
Yes. I develop wallet apps, fintech apps, payment apps, and secure financial mobile applications.
Is the app secure and scalable?
Yes. I follow best practices for security, performance optimization, and scalable architecture.
Do you sign NDA for confidential projects?
Yes. I’m happy to sign an NDA to protect your idea and project details.
Reviews
90 reviews for this Gig
| (89) | ||
| (1) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
J javontablack
Repeat Client
United States
“The developer successfully delivered the foundational frontend structure for the platform and remained committed throughout the process. There were some communication challenges and occasional language barriers when trying to fully align on the premium UI/UX vision and refinement expectations I had...
$800-$1,000
Price
3 weeks
Duration
A 
Seller's Response
Helpful?E elvin_suarez
United States
I’m extremely satisfied with the Habit Tracker app. The dark-themed design looks modern and premium, and the overall user experience is smooth and well organized. The seller understood the requirements perfectly and delivered a clean Android app inspired by the reference while keeping it unique and professional.
$50-$100
Price
4 days
Duration
A Seller's Response
Helpful?C cooper_rankin
United States
He explained the entire app development process in a very simple and clear way, from planning and UI/UX design to development, testing, and deployment. I finally understood how mobile apps are actually built. Highly recommended for anyone looking for genuine guidance and expertise in app development.
$50-$100
Price
3 days
Duration
A Seller's Response
Helpful?B bettyrortiz
United States
Sajidur did an excellent job developing our Flutter app for both Android and iOS. The UI/UX is clean, modern, and very user-friendly. He implemented a secure login and user system smoothly, and the daily journal feature works perfectly with easy entry creation and management. The calendar view is well-organized,...
$200-$400
Price
5 days
Duration
A Seller's Response
Helpful?A annakingdawson
Repeat Client
United States
I’d like to express my sincere gratitude for the role you played in this app project. Your consistent communication, dedication, and the overall standard of your work made a meaningful difference throughout the process. The progress we’ve achieved is a direct result of your involvement, and it’s been a positive experience working together.
$200-$400
Price
3 days
Duration
A Seller's Response
Helpful?
Reviews
90 reviews for this Gig
| (89) | ||
| (1) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
J javontablack
Repeat Client
United States
“The developer successfully delivered the foundational frontend structure for the platform and remained committed throughout the process. There were some communication challenges and occasional language barriers when trying to fully align on the premium UI/UX vision and refinement expectations I had...
$800-$1,000
Price
3 weeks
Duration
A Seller's Response
Helpful?E elvin_suarez
United States
I’m extremely satisfied with the Habit Tracker app. The dark-themed design looks modern and premium, and the overall user experience is smooth and well organized. The seller understood the requirements perfectly and delivered a clean Android app inspired by the reference while keeping it unique and professional.
$50-$100
Price
4 days
Duration
A Seller's Response
Helpful?C cooper_rankin
United States
He explained the entire app development process in a very simple and clear way, from planning and UI/UX design to development, testing, and deployment. I finally understood how mobile apps are actually built. Highly recommended for anyone looking for genuine guidance and expertise in app development.
$50-$100
Price
3 days
Duration
A Seller's Response
Helpful?B bettyrortiz
United States
Sajidur did an excellent job developing our Flutter app for both Android and iOS. The UI/UX is clean, modern, and very user-friendly. He implemented a secure login and user system smoothly, and the daily journal feature works perfectly with easy entry creation and management. The calendar view is well-organized,...
$200-$400
Price
5 days
Duration
A Seller's Response
Helpful?A annakingdawson
Repeat Client
United States
I’d like to express my sincere gratitude for the role you played in this app project. Your consistent communication, dedication, and the overall standard of your work made a meaningful difference throughout the process. The progress we’ve achieved is a direct result of your involvement, and it’s been a positive experience working together.
$200-$400
Price
3 days
Duration
A Seller's Response
Helpful?
