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English
$
USD
I will fix or migrate base44, lovable, replit, bolt ai web app
Mursaleen Nisar
Level 2
4.8
4.8
Gig Summary
What people loved about this freelancer
hypermedia_
United Kingdom
Working with Mursa has been a splendid experience he has been a very strong pillar in helping me build my app and with monitoring it. I feel like I have gotten...
hinasol
United Kingdom
Mursaleen found a major security risk with my Base 44 app. So happy it got sorted at such an early stage. Many people wouldn't even bother to check once you've...
brunopelembe
United Kingdom
Working with Mursaleen has been an absolutely outstanding experience from start to finish. I cannot recommend him highly enough. He took my app idea and brought...
jbexpress25
United States
Mursaleen delivered outstanding work on a complex BASE44 app project. He completed 37 bug fixes across three days. His communication was clear and professional...
clout9maanger
United States
He did exactly what I needed, this guy will get your app on the App Store. He’s legit, don’t question it. Best Fiverr experience I’ve had. Thank you so much.
About this gig
Is your Base44, Lovable, Replit, or Bolt app broken, showing errors, or failing to deploy?
You are in the right place.
I'm a full stack developer specializing in debugging, fixing, migrating, and stabilizing AI and vibe coded web apps. I help turn unfinished or unstable projects into reliable, tested, production-ready applications.
I can help with:
- Base44, Lovable, Replit & Bolt app fixes
- Bug fixing and error resolution
- App migration between platforms
- Frontend and backend issues
- API and third-party integration errors
- Supabase authentication and database issues
- Stripe and payment integration fixes
- Deployment and hosting problems
- UAT and functionality testing
- Performance and code optimization
Whether you have one frustrating bug or an unstable app with multiple issues, I will identify the root cause and work toward a reliable solution.
Let's get your app fixed, tested, migrated, and ready for real users.
Message me before placing an order so I can review your issue and recommend the right package.
Get to know Mursaleen Nisar
Mursaleen Nisar
Full stack web and app developer
Level 2
- FromIndia
- Member sinceJun 2025
- Avg. response time1 hour
- Last delivery3 weeks
Languages
Kashmiri, Urdu, English, Hindi
I’m a full-stack web and app developer and software engineer with 2+ years of experience building web apps, backend systems, and android/iOS mobile apps. I’ve worked on 40+ real-world projects for businesses and startups, delivering secure, high-performance solutions. My expertise includes custom website development, mobile app development, backend APIs, AI-powered features, deployment, bug fixing, optimization, and performance tuning. I focus on clean code, fast delivery, and building software that supports real business growth.
My Portfolio
FAQ
What do you need from me to start fixing my app?
I’ll need access to your source code (Replit/Lovable/Bolt/Base44/GitHub), hosting details, error screenshots, and a brief explanation of the issue.
Can you fix both frontend and backend issues?
Yes, I debug frontend UI bugs, backend logic errors, API failures, database issues, and integration problems.
Do you work with Lovable.dev and Supabase apps?
Yes, I can fix Lovable.dev projects, Supabase authentication/database errors, and related deployment issues.
Can you help deploy my MVP after fixing it?
Absolutely. I can handle deployment to Vercel, VPS, or other hosting platforms to ensure everything runs smoothly.
What if my app has multiple complex issues?
No problem. Contact me first, and I’ll review the project and suggest the right package or a custom offer.
Reviews
39 reviews for this Gig
| (35) | ||
| (3) | ||
| (0) | ||
| (0) | ||
| (1) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
A arielmanigsaca
United States
Nisar worked good on the payment aspect of the app. Eventhough I already paid him for the job, he promised to work on the bugs when I encounter them. Reliable coder
$100-$200
Price
8 days
Duration
Helpful?C clout9maanger
United States
Ongoing collaborationHe did exactly what I needed, this guy will get your app on the App Store. He’s legit, don’t question it. Best Fiverr experience I’ve had. Thank you so much.
$600-$800
Price
2 weeks
Duration
M 
Seller's Response
Helpful?P petarr313
United Kingdom
Mursaleen did a great job testing my app. He checked the platform carefully, identified issues clearly, and provided useful feedback that helped improve the quality and stability of the app. Communication was professional, and the testing was done with good attention to detail. I’m happy with the work and would recommend him for app testing and QA tasks.
$200-$400
Price
3 days
Duration
M Seller's Response
Helpful?K kevinlanderson
United States
The project was delivered way ahead of schedule. The quality was excellent. The communication was proactive. One of the best developers I have worked with. I will definitely be engaging for future projects.
$1,000-$2,500
Price
10 days
Duration
M Seller's Response
Helpful?J 
johnsmith27999
India
Ongoing collaborationHe is really good and he solved my issue in less than a day which I was trying to solve for the past 2 days
$50
Price
2 days
Duration
M Seller's Response
Helpful?
Reviews
39 reviews for this Gig
| (35) | ||
| (3) | ||
| (0) | ||
| (0) | ||
| (1) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
A arielmanigsaca
United States
Nisar worked good on the payment aspect of the app. Eventhough I already paid him for the job, he promised to work on the bugs when I encounter them. Reliable coder
$100-$200
Price
8 days
Duration
Helpful?C clout9maanger
United States
Ongoing collaborationHe did exactly what I needed, this guy will get your app on the App Store. He’s legit, don’t question it. Best Fiverr experience I’ve had. Thank you so much.
$600-$800
Price
2 weeks
Duration
M Seller's Response
Helpful?P petarr313
United Kingdom
Mursaleen did a great job testing my app. He checked the platform carefully, identified issues clearly, and provided useful feedback that helped improve the quality and stability of the app. Communication was professional, and the testing was done with good attention to detail. I’m happy with the work and would recommend him for app testing and QA tasks.
$200-$400
Price
3 days
Duration
M Seller's Response
Helpful?K kevinlanderson
United States
The project was delivered way ahead of schedule. The quality was excellent. The communication was proactive. One of the best developers I have worked with. I will definitely be engaging for future projects.
$1,000-$2,500
Price
10 days
Duration
M Seller's Response
Helpful?J johnsmith27999
India
Ongoing collaborationHe is really good and he solved my issue in less than a day which I was trying to solve for the past 2 days
$50
Price
2 days
Duration
M Seller's Response
Helpful?
