I will fix flutter app bugs, crashes and errors fast
Gig Summary
Flutter Mobile App and Backend Development Expert
About this Gig
s your Flutter app crashing, freezing, or behaving unexpectedly? Send me the details most issues can be diagnosed within hours.
I'm a Level 2 seller with 5+ years of Flutter experience. I fix bugs properly: I find the root cause, not just the symptom, so the same issue doesn't come back.
I can fix:
- App crashes, freezes & startup errors
- UI bugs, layout breaks & responsiveness issues
- Slow performance, lag & memory leaks
- Firebase errors (auth, Firestore, notifications)
- API integration & data-loading failures
- Payment gateway & Google Maps issues
- Build & release errors (Android + iOS)
How I work:
- You share the issue (and code access)
- I diagnose and confirm the exact scope
- I fix, test on both platforms, and explain what was wrong
You always get tested code plus a short summary of what caused the issue so you understand your own app better.
Important: Message me before ordering with a description of the problem. This lets me confirm the right package and timeline no surprises for either of us.
Unrelated or newly discovered issues can be added via custom offer.
My Portfolio
FAQ
What are you offering in your 'Basic' Package?
Simple mobile app with 5 to 8 screen design as per your demand, admin panel and backend in firebase.
What are you offering in your 'Standard' Package?
App consist of 10 screens with custom design, admin panel and backend in firebase.
What are you offering in your 'Premium' Package?
App consist of screens up to 12 having complete admin panel, backend in firebase & advanced features
11 reviews for this Gig
| (11) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Y yutish09

Mauritius
Ongoing collaborationVery good experience. Umair was exceptional nice to make any type of amendments. He went beyond and above to add new features to my app and was very keen to be invested in my app. Would definitely order again from him.
$100-$200
Price
1 day
Duration
U 
Seller's Response
Helpful?R robertacwebster

United States
Umair did an excellent job! Good communication and high-quality work. Highly recommend him for app development!.
$50
Price
3 days
Duration
U 
Seller's Response
Helpful?K kateju84

United States
Ongoing collaborationUmair is very hard working. He is very knowledgeable and digs deep to understand requirements. We will make more orders! Quality work and great communication!
$200-$400
Price
4 weeks
Duration
U 
Seller's Response
Helpful?K kateju84

United States
Ongoing collaborationWe completed front end with Umair. The communication is excellent. It is very important for us to know that after submitting the order a person has a constant progress with it. He shared with us intermediate progress. So far we are very happy! He is knowledgeable and hard working. We are ordering back end now.
$200-$400
Price
8 days
Duration
Helpful?A 
alexandrusir728

Spain
Ongoing collaborationI use his services very often, and I am happy with his work. I highly recommend him.
$100-$200
Price
U 
Seller's Response
Helpful?
11 reviews for this Gig
| (11) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Y yutish09

Mauritius
Ongoing collaborationVery good experience. Umair was exceptional nice to make any type of amendments. He went beyond and above to add new features to my app and was very keen to be invested in my app. Would definitely order again from him.
$100-$200
Price
1 day
Duration
U 
Seller's Response
Helpful?R robertacwebster

United States
Umair did an excellent job! Good communication and high-quality work. Highly recommend him for app development!.
$50
Price
3 days
Duration
U 
Seller's Response
Helpful?K kateju84

United States
Ongoing collaborationUmair is very hard working. He is very knowledgeable and digs deep to understand requirements. We will make more orders! Quality work and great communication!
$200-$400
Price
4 weeks
Duration
U 
Seller's Response
Helpful?K kateju84

United States
Ongoing collaborationWe completed front end with Umair. The communication is excellent. It is very important for us to know that after submitting the order a person has a constant progress with it. He shared with us intermediate progress. So far we are very happy! He is knowledgeable and hard working. We are ordering back end now.
$200-$400
Price
8 days
Duration
Helpful?A 
alexandrusir728

Spain
Ongoing collaborationI use his services very often, and I am happy with his work. I highly recommend him.
$100-$200
Price
U 
Seller's Response
Helpful?
