Android APK Functionality Upgrade

@mariakhan73700

As an experienced Android developer, I am confident in my skills to tackle and excel in this unique project. Adept at using reverse-engineering tools like apktool, jadx, smali, or others, I can confidently decompile your APK while ensuring no data loss. My strong background includes a wide range of languages, such as Java and Kotlin which will be vital in making the required code-level adjustments you need for a successful update. Per your criterion, my deliverables will include a decompiled project with readable smali/converted Java or Kotlin code, along with a rebuilt and signed APK ready for release and installation. Additionally, you'll receive a comprehensive change log summarizing every modified class or resource as well as a test report proving the updated functionality works on multiple modern devices. My experience extends beyond just development. I believe in clean code and scalable solutions; qualities that will come in handy when dealing with an app without access to its original source code. I'm also well-versed with UI design so even if you insist on minimal changes visually, I can improve user experience where needed while strategically enhancing business logic other features within the application. If chosen, I assure you an efficient turnaround time while providing quality work that meets all your requirements

@Rajoriadares

Hello Client, Greeting of the day!!!! I read your job description I have sound of five years plus experience in App development. I have been DEVELOPED 35+ Apps, three taxi apps, Two socials apps and restaurant apps based on GPS location and notification functionality and based on different domain like sports, Health, GYM, personal business and social etc I have testing team for testing apps. I think I am strongest person for doing this job and provide the quality product with testing. I am always available for your support. Thanks Sr. Mobile Developer

@arbu1499

Hi, I understand you only have the compiled APK and need functional changes without touching the existing UI, which means careful decompiling, smali/logic updates, and clean rebuilding without breaking current behavior. I’ve worked with apktool, jadx, and smali to modify business logic, adjust in-app flows, and safely re-sign apps so they install over the original without data loss. I’ll document every changed class, test on a modern Android version, and make sure the updated APK runs smoothly with no new crashes or security flags. This is a precise reverse-engineering task, and I’m comfortable handling it end to end. Looking forward for your positive response in the chatbox. Best Regards, Arbaz H

@abdf2010

Hello. I came across your "Android APK Functionality Upgrade" and it aligns well with my background. I have hands-on experience with Java, Mobile App Development, Android that's directly relevant here. Feel free to reach out if you have questions.

@DigitalNightOwl8

Hi Mate , Good morning! Already have something live to show you I am an expert mobile engineer with skills including Mobile App Development, Software Architecture, Reverse Engineering, Kotlin, Android, Java, Android SDK and Android App Development. Please contact me to discuss more about this project. Talk to you soon

@anirudhat

Hi, I can help with this task. Ready to start immediately.

@MuhammadAsad108

✔ I deliver 100% work — 99.9% is not for me. ✔ Workflow Diagram APK Analysis & Feasibility Check ⟶⟶ Decompilation (apktool / jadx / smali) ⟶⟶ Logic Mapping & Targeted Code Changes ⟶⟶ Smali / Java / Kotlin Adjustments ⟶⟶ Rebuild, Re-sign & Align ⟶⟶ Install & Runtime Verification ⟶⟶ Change Log & Test Evidence Delivery Key Highlights ✔ APK-only workflow experience — comfortable working without original source code using apktool, jadx, smali, and hybrid approaches. ✔ Logic-focused changes — modifying business logic, in-app flows, and feature behavior while keeping the existing UI intact. ✔ Safe decompilation & rebuild — careful handling of resources, manifests, permissions, and signatures to avoid install or runtime issues. ✔ Smali-level precision — direct edits where needed, with converted Java/Kotlin for readability when possible. ✔ Backward compatibility — ensuring the updated APK installs cleanly over the original without data loss. ✔ Stability-first mindset — no regressions, crashes, or Play Protect warnings introduced. ✔ Clear documentation — concise changelog listing every modified class, method, or resource. ✔ Verified results — test proof (screenshots or video) on a modern Android device or emulator. Best Regards, Asad Android Developer | Reverse Engineering Specialist | APK Modification

@softandrew

Hello, I can confidently update your Android app starting from the APK alone. I have hands-on experience with apktool, jadx, and smali to modify business logic, rebuild, re-sign, and test stable APKs. I’ll deliver clean changes, full verification, and quick turnaround without impacting existing functionality.

@TechWagger2026

With over a decade of experience as an Android and mobile app developer, I bring a wealth of knowledge and skill to this project. My proficiency in Kotlin and understanding of APK decompilation and modification make me a strong candidate for this role. Across 416 successful projects, I've honed my ability to work efficiently with compiled code, ensuring that any required changes don't compromise the existing functionalities or introduce new issues. Moreover, my comprehensive grasp on software architecture allows me to make precise business-logic tweaks, facilitate in-app flow changes, and seamlessly incorporate new features without necessitating an entire redesign. You can trust me to provide a meticulously decompiled project with readable smali and converted Java or Kotlin code in conjunction with other deliverables like a rebuilt APK ready for release, change log summarizing each modification, and one test report to exhibit functionality on modern devices or emulators. I prioritize client satisfaction above all else. My goal is to provide tailored IT solutions that align with your precise requirements. Recognizing that time is of the essence here, if you choose me for this job, I assure you of efficient delivery without compromising quality. Let's commence the process by sharing the APK; we'll then hit the ground running!

@appytech1

As a seasoned Android developer and team leader at Appy, specializing in mobile app development, innovative software architecture and bringing creative ideas to life, I am confident that I can deliver beyond your expectations for this project. While I possess strong skills in Android APK modification and recompilation, my flexibility in navigating through uncharted territories like working without the source code sets me apart from other candidates. Throughout my career, I have proactively sought solutions to unforeseen challenges. Your task of decompiling an existing APK is an excellent example of the kind of issues I ensure my workflow accounts for. My knack for understanding complex code and making logical adjustments makes me the perfect pick for your APK upgrade project. Together, we can make those business-logic tweaks, flow changes or feature additions seamlessly while maintaining the app's core functionality. Moreover, as someone who prioritizes client satisfaction above all else, I promise you transparent communication throughout the process. From receipt of the decompiled project through rebuilding and resigning to verification tests and final delivery – expect thoroughness, accuracy and timely completion. No upfront fee will be required; you only pay once you're completely satisfied with the end result. Don't let lack of source code hold your app's potential back - let's take things forward and create an enhanced product!

@karthikresonite

Hello, We at Resonite Technologies have a proven team experienced in Android reverse engineering and working directly with APKs to implement functionality upgrades. We can handle your project end-to-end: decompile your APK using trusted tools (apktool, JADX, smali), implement the requested business logic or feature changes, and rebuild a fully signed APK ready for release. Our deliverables include: Decompiled project with readable smali/converted Java/Kotlin code Updated, signed APK that installs cleanly over the original without data loss Change log detailing all modified classes and resources Test report (screenshots/video) confirming updated functionality works on modern devices We ensure all existing features remain intact, no new crashes occur, and Play Protect compatibility is maintained. Our workflow prioritizes precision, security, and full compliance with Android standards. Resonite Technologies – Trusted experts in APK enhancement and Android development.

@camleniosoftware

Hello, I can update your Android app directly from the APK by decompiling it using trusted tools like jadx or apktool. I’ll implement the requested functionality changes while keeping the existing UI intact, then rebuild, sign, and test the APK on modern devices. Deliverables include the decompiled project, signed updated APK, a brief change log, and proof of testing. I’ll ensure smooth installation over the original with no data loss or crashes. Let's discuss further. Thanks!