I will build your mobile app with flutterflow, bubble or adalo


About this gig
Hi, I'm Sebastian a web developer turning complex ideas into powerful mobile applications.
Whether you are a founder validating a startup or a business seeking efficiency, I don't just "build apps" I engineer digital ecosystems.
I specialize in high-performance development using Adalo, Bubble, and FlutterFlow. My focus is on creating scalable, robust platforms that solve real business problems, integrate AI, and scale with your growth.
The Anti-Template Approach In a world of generic "drag-and-drop" solutions, I offer a premium engineering mindset. I double down on the fundamentals that actually matter: Database Architecture, User Logic, and Seamless Integrations.
I will help you:
- Architect & Build: Launch MVPs or full-scale apps in weeks, not months.
- Intelligent Design: Create responsive, modern UI/UX.
- Power Your Backend: Connect databases (Xano, Supabase, Firebase, Airtable).
- Future-Proof: Integrate AI (OpenAI/GPT) and automation.
- Go Live: Handle Apple App Store & Google Play submission.
Lets elevate your concept to a market-ready product.
Contact me or book a consultation to get started.
Get to know Sebastian
FullStack No Code Developer and Automation Architect, Level 2 Seller
- FromGreece
- Member sinceDec 2022
- Avg. response time1 hour
- Last delivery4 weeks
Languages
English, Greek
My Portfolio
FAQ
What do you need from me to get started?
I’ll need a brief description of your app idea, its main purpose, and the key features you want included. Sketches or references are also helpful but not required.
Can you help publish my app to the App Store or Google Play?
Absolutely! I can guide you through the publishing process or handle the submission for both the App Store and Google Play if needed.
Do you offer post-delivery support?
Yes, I offer ongoing support and maintenance depending on your needs, to ensure your app continues to run smoothly after launch.
Can we talk before I place the order?
Definitely — I offer a free 15-minute consultation call to understand your vision.
Which platform should we use: Adalo, Bubble, or FlutterFlow?
Adalo is excellent for beautiful, design-first mobile apps with a fast turnaround. Bubble is the gold standard for complex web logic and heavy data processing. FlutterFlow allows for native code export and high-performance iOS/Android experiences.
Will I own the source code and intellectual property?
Absolutely. Unlike agencies that hold your project hostage, I believe in complete transparency. Once the project is delivered and approved, you have 100% ownership of the project file, the design assets, and the intellectual property.
Do you just build the interface, or do you handle the backend logic?
I am a "Full-Stack" No-Code developer. I don't just make it look pretty; I make it work. This includes setting up your database architecture (relationships, user roles), configuring API connections, and ensuring the logic flows correctly behind the scenes.
Can you integrate AI (ChatGPT/OpenAI) into my app?
Yes. This is one of my specialties. I can connect your app to OpenAI’s API to create features like personalized chatbots, text summarization, content generation, or intelligent assistants within your application.
What costs are involved regarding the App Stores (Apple/Google)?
Please note that Apple and Google charge their own developer fees (approx. $99/year for Apple and a one-time $25 fee for Google). You will need your own accounts for these, but I will guide you through the setup and submission process as part of the Premium package.
Do you offer support after the app is launched?
Yes. Software is a living thing. All my packages include a specific period of post-launch support to fix any bugs. I also offer monthly retainer packages for ongoing maintenance, feature updates, and server-side management if you prefer a long-term partner.
9 reviews for this Gig
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Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
A awladthani2025
Repeat Client

Oman
Was very great to work with Sebastain and his understanding of the requirement and fluency of English made it very easy to complete this project. Many thanks and for sure would consider him for future projects.
$1,000-$1,500
Price
5 months
Duration
Helpful?M mclapperton
Repeat Client

United States
Sebastian is great. I hope to work with him on continuing the project. I'm waiting for my client's response.
$800-$1,000
Price
4 days
Duration
Helpful?D 
damienboye

France
Sebastian has been really reactive, he has perfectly understood my wishes and has did that. I'm very satisfied of what he did. Thank you again
$50-$100
Price
1 day
Duration
Helpful?C compgy291
Repeat Client

United States
Great seller
$400-$600
Price
11 days
Duration
Helpful?C compgy291
Repeat Client

United States
Great seller. Highly recommend
$400-$600
Price
11 days
Duration
Helpful?
9 reviews for this Gig
| (9) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
A awladthani2025
Repeat Client

Oman
Was very great to work with Sebastain and his understanding of the requirement and fluency of English made it very easy to complete this project. Many thanks and for sure would consider him for future projects.
$1,000-$1,500
Price
5 months
Duration
Helpful?M mclapperton
Repeat Client

United States
Sebastian is great. I hope to work with him on continuing the project. I'm waiting for my client's response.
$800-$1,000
Price
4 days
Duration
Helpful?D 
damienboye

France
Sebastian has been really reactive, he has perfectly understood my wishes and has did that. I'm very satisfied of what he did. Thank you again
$50-$100
Price
1 day
Duration
Helpful?C compgy291
Repeat Client

United States
Great seller
$400-$600
Price
11 days
Duration
Helpful?C compgy291
Repeat Client

United States
Great seller. Highly recommend
$400-$600
Price
11 days
Duration
Helpful?

