You will get bug fixing and performance optimization service
Rising Talent
Project details
You will get professional bug fixing and performance optimization for your mobile application to improve stability, speed, and user experience.
With extensive experience debugging complex iOS and Android applications, I specialize in identifying root causes and delivering permanent solutions—not temporary patches.
This service includes:
✔ Crash and error diagnosis
✔ Memory and CPU optimization
✔ UI lag and freeze fixes
✔ Network performance tuning
✔ Code refactoring
✔ App stability improvement
Whether your app is crashing, slow, or failing reviews, I will restore it to production-quality standards.
With extensive experience debugging complex iOS and Android applications, I specialize in identifying root causes and delivering permanent solutions—not temporary patches.
This service includes:
✔ Crash and error diagnosis
✔ Memory and CPU optimization
✔ UI lag and freeze fixes
✔ Network performance tuning
✔ Code refactoring
✔ App stability improvement
Whether your app is crashing, slow, or failing reviews, I will restore it to production-quality standards.
Platform
iOSApp Type
Native AppDevelopment Technology
React Native, Kotlin, SwiftApp Purpose
Dating, Finance, Education, Health & Fitness, Lifestyle, Medical, Music, Restaurant, Shopping, Social NetworkingExpertise
Design, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$300
|
Standard
$500
|
Advanced
$1,500
|
|---|---|---|---|
| Delivery Time | 2 days | 5 days | 10 days |
Number of Revisions | 1 | 2 | 3 |
Source Code |
2 reviews
(2)
(0)
(0)
(0)
(0)
This project doesn't have any reviews.
CR
Chandrapal Singh R.
Mar 3, 2026
Looking for React Native Developer for Cross-Platform Mobile App
Krunal did a great job on our React Native app. He quickly fixed issues, improved the UI, and made everything run smoothly on both iOS and Android. Very reliable and easy to work with highly recommended.
PS
Pankaj S.
Mar 2, 2026
iOS Swift Developer Needed for Bug Fixing and Performance Optimization
Krunal quickly fixed our iOS app issues and improved its performance. Fast, reliable, and easy to work with.
About Krunal
Senior iOS & React Native Developer | 13+ Years Mobile Expert
100%
Job Success
Ahmedabad, India - 12:46 pm local time
I have successfully delivered 50+ production-ready apps across iOS and Android, many of which are actively used by thousands of users worldwide.
𝗪𝗵𝗮𝘁 𝗜 𝗕𝗿𝗶𝗻𝗴 𝘁𝗼 𝗬𝗼𝘂𝗿 𝗣𝗿𝗼𝗷𝗲𝗰𝘁
✔ Native iOS Development (Swift, SwiftUI, Objective-C)
✔ Cross-Platform Apps (React Native, Flutter)
✔ Clean Architecture (MVVM, VIPER, Clean Code)
✔ API Integration (REST, GraphQL, Firebase)
✔ POS, ERP, Marketplace & Enterprise Apps
✔ App Store & Play Store Deployment
✔ Performance Optimization & Crash Reduction
✔ Secure & Scalable App Design
𝗣𝗿𝗼𝗳𝗲𝘀𝘀𝗶𝗼𝗻𝗮𝗹 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲
13+ Years in Mobile App Development
Senior iOS Developer & Team Lead
Architected enterprise-grade POS and ERP systems
Built apps used by 100K+ users
Reduced crash rates by up to 90%
Led and mentored development teams
I don’t just write code — I design reliable systems that grow with your business.
𝗡𝗼𝘁𝗮𝗯𝗹𝗲 𝗪𝗼𝗿𝗸 𝗜𝗻𝗰𝗹𝘂𝗱𝗲𝘀
✅ POS Systems for Retail & Restaurants
✅ Community & Housing ERP Platforms
✅ Marketplace & Service Booking Apps
✅ Inventory & Logistics Management
✅ Fitness, Restaurant & Business Apps
(Portfolio links available upon request)
𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝘆 𝗦𝘁𝗮𝗰𝗸
Mobile: Swift, SwiftUI, Objective-C, React Native, Flutter
State Management: Redux, Context API, MobX
Backend & APIs: REST, GraphQL, Firebase
Tools: Git, Jira, CI/CD, XCTest, Crashlytics
Databases: SQLite, Realm, Core Data
𝗪𝗵𝘆 𝗪𝗼𝗿𝗸 𝗪𝗶𝘁𝗵 𝗠𝗲?
✔ Clear & Transparent Communication
✔ On-Time Delivery and App Release Management
✔ Production-Ready Code
✔ Long-Term Support
✔ Client Satisfaction Focus
I treat every project as a long-term partnership, not a one-time task.
Steps for completing your project
After purchasing the project, send requirements so Krunal can start the project.
Delivery time starts when Krunal receives requirements from you.
Krunal works on your project following the steps below.
Revisions may occur after the delivery date.
Code & Issue Review
Analyze your codebase, crash logs, and reported issues.
Root Cause Analysis
Identify performance bottlenecks and bug sources.