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I will be your react native expo developer for ios and android mobile apps
Hassan A
Level 1
1 order in queue
5.0
5.0
About this gig
Hello, and thank you for stopping by.
Whether you need one app for iPhone and Android, an Expo app that won't build, or a feature you've been waiting to add, you've come to the right place. I have built mobile apps since 2011, and most clients come back for their next project.
I listen first, ask the right questions and explain everything in plain language. You'll always know what comes next.
WHAT I CAN HELP WITH
- iOS and Android apps from one codebase: React Native, Expo, TypeScript
- MVPs and full apps: business, health, finance, delivery, chat
- Upgrading apps to the latest Expo SDK and New Architecture
- Fixing EAS build errors, crashes and store rejections
- Payments, subscriptions, maps, push notifications
- Firebase, Supabase or your own API
- Bluetooth (BLE) and IoT devices
- Turning a React web app into a mobile app
- Flutter, if you prefer it
HOW WE WORK TOGETHER
- You share your idea. Rough notes are fine.
- We agree the scope, price and delivery date before I start.
- You test builds on your own phone as I go.
- You approve, get the full source code and 1 month of free support.
Message me before you order, and I will quote the best price for your project.
Get to know Hassan A
Hassan A
Mobile, Applied AI Engineer, LLM Applications, RAG, On Device AI, IoT
Level 1
- FromPakistan
- Member sinceDec 2018
- Avg. response time1 hour
- Last deliveryabout 19 hours
Languages
Urdu, English
With 15+ years of expertise, I engineer high-performance Android, iOS, React Native, and Flutter apps. From concept to Store launch, I deliver scalable, clean-coded solutions tailored to your business goals.
The AI Edge:
I specialize in integrating AI-powered features—such as Smart Search, LLMs, and Predictive Analytics—to give your app a competitive lead. I also utilize AI-driven development tools to ensure faster, high-security delivery.
You Get:
Bug-free, modular code
Weekly status updates
1 Month Free Support
100% Satisfaction
Let’s turn your vision into a polished, AI-ready app.
My Portfolio
Other Mobile App Development Services I Offer
FAQ
How long will my app take, and how much will it cost?
It depends on the screens and features. As a guide: one screen or feature from $100 in about a week, a 6-screen MVP for iOS and Android from $450 in about two weeks, a full app with both store launches from $1,100. Message me and I'll confirm an exact price and date first.
React Native or Flutter: which should I choose?
For most apps I recommend React Native with Expo: one codebase, fast updates, and code you can share with a React website. If you already have a Flutter app, or prefer Flutter, I build in Flutter too.
Can you upgrade my old React Native or Expo app?
Yes. Since Expo SDK 55, apps must run on React Native's New Architecture, so older apps and some libraries need migrating first. I upgrade step by step, replace libraries that no longer work and test on both platforms.
My app won't build or keeps crashing. Can you fix it?
Yes: EAS build failures, Xcode and Gradle errors, crashes on launch and store rejections. Send me the error log or a screen recording and I'll tell you what's wrong before you order.
Can you publish my app on the App Store and Google Play?
Yes, in Premium or as an extra. You need your own accounts: Apple Developer ($99 a year) and Google Play ($25 once). New personal Google Play accounts must run a closed test with 12 testers for 14 days first.
Can you turn my React website into a mobile app?
Yes. I reuse your logic, API and design where possible and build real iOS and Android screens in React Native, so it feels like an app, not a website in a frame. Send me the link and I'll suggest the best approach.
Can you connect the app to Bluetooth or IoT devices?
Yes: BLE devices such as smartwatches, locks and sensors, ESP32 boards, and MQTT or socket connections, with native code where React Native needs it. Tell me the device model and I'll check what it supports.
Can I test the app and follow progress?
Yes. You get test builds on your own iPhone and Android phone as features are ready, and progress updates in Fiverr messages. I test on real devices and emulators across screen sizes.
How do you write and hand over the code?
TypeScript, a clean folder structure, Git version control and short documentation, so another developer could pick it up. You get the full source code with every package, and you own it.
What does the 1 month of free support include?
For 30 days after delivery, I fix any bug or problem in the work I delivered, free, with every package. New features or design changes are new work: I'll quote them first, and you decide.
Reviews
7 reviews for this Gig
| (7) | ||
| (0) | ||
| (0) | ||
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| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
N nextdayapp
Germany
Hassan always does a great job. The quality of his work is excellent, communication is easy, and he always makes sure everything is done properly. Very reliable and professional. I’m really happy with the results and can definitely recommend working with him!
$50
Price
3 days
Duration
H 
Seller's Response
Helpful?K khrishnagrace
United States
Hassan has been such a gift. My app has been a 6 year passion project and he brilliantly, patiently and meticulously brought it to life. He's honest, he's super hard working and understood my vision in a way that nobody else has. Really wonderful to work with. Cannot recommend enough.
$400-$600
Price
3 months
Duration
H Seller's Response
Helpful?N 
notkayvia
Jamaica
Hassan always delivers quality projects on time and is able to work with little to no direction, he even understands from vague or non clear requirements which has tremendously helped.
$50
Price
3 days
Duration
H Seller's Response
Helpful?N nextdayapp
Germany
🌟🌟🌟🌟🌟 Reliable, Skilled, and Professional – Highly Recommended! This is my second time working with Hassan – this time he developed the full chat module of my app, including integration with Azure OpenAI. Once again, he delivered high-quality work, on time, and with clear communication. What I...
$100-$200
Price
8 days
Duration
H Seller's Response
Helpful?N notkayvia
Jamaica
Loved working with Hassan! He delivered and checked in with me multiple times on how to complete the project, where I didn't know what to do- he stepped in and helped make choices. Hassan was extremely friendly and the app he delivered was well thought out and designed.
$200-$400
Price
3 weeks
Duration
H Seller's Response
Helpful?
Reviews
7 reviews for this Gig
| (7) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
N nextdayapp
Germany
Hassan always does a great job. The quality of his work is excellent, communication is easy, and he always makes sure everything is done properly. Very reliable and professional. I’m really happy with the results and can definitely recommend working with him!
$50
Price
3 days
Duration
H Seller's Response
Helpful?K khrishnagrace
United States
Hassan has been such a gift. My app has been a 6 year passion project and he brilliantly, patiently and meticulously brought it to life. He's honest, he's super hard working and understood my vision in a way that nobody else has. Really wonderful to work with. Cannot recommend enough.
$400-$600
Price
3 months
Duration
H Seller's Response
Helpful?N notkayvia
Jamaica
Hassan always delivers quality projects on time and is able to work with little to no direction, he even understands from vague or non clear requirements which has tremendously helped.
$50
Price
3 days
Duration
H Seller's Response
Helpful?N nextdayapp
Germany
🌟🌟🌟🌟🌟 Reliable, Skilled, and Professional – Highly Recommended! This is my second time working with Hassan – this time he developed the full chat module of my app, including integration with Azure OpenAI. Once again, he delivered high-quality work, on time, and with clear communication. What I...
$100-$200
Price
8 days
Duration
H Seller's Response
Helpful?N notkayvia
Jamaica
Loved working with Hassan! He delivered and checked in with me multiple times on how to complete the project, where I didn't know what to do- he stepped in and helped make choices. Hassan was extremely friendly and the app he delivered was well thought out and designed.
$200-$400
Price
3 weeks
Duration
H Seller's Response
Helpful?
