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I am looking for an experienced Android developer to build a calculator app with both standard and scientific calculation features. The UI/UX is already fully designed in Figma, so the scope and flow are very clear. You will simply need to follow the design and implement the functionality accordingly. Project Scope: Standard calculator (basic operations: +, −, ×, ÷, %) Scientific calculator (functions like sin, cos, tan, log, sqrt, etc.) Smooth and responsive UI as per Figma design Accurate calculation logic Proper error handling (divide by zero, invalid inputs, etc.) Important: I will provide the Figma design link after you request access Please review the design before finalizing your bid Requirements: Strong experience in Android development (Java/Kotlin) Experience building calculator or math-based apps (preferred) Ability to follow UI designs precisely Clean and optimized code Deliverables: Fully functional Android app Source code Proper testing to ensure accuracy Budget & Timeline: Please share your best price and estimated timeline after reviewing the Figma If you have built similar apps before, please share examples.
Project ID: 40401608
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Active 20 hours ago
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78 freelancers are bidding on average ₹11,872 INR for this job

Hello We are Ominfowave Software Services Pvt. Ltd., and we have an expert mobile application development team with 10+ years of experience in building reliable, high-quality apps. ? Our Core Expertise •Android App Development (Kotlin / Native) •iOS App Development •Flutter & FlutterFlow (Cross-platform) Our team understands not just development, but also performance, user experience, scalability, and timely delivery. ? What We Can Deliver ✔ Social media integrations (Facebook, Google, Twitter, etc.) ✔ Google APIs (Maps, Places, FCM, YouTube, Analytics) ✔ Offline & cloud database solutions (SQLite, MySQL, Realtime DB) ✔ Secure payment integrations (Stripe, PayPal, Braintree) ✔ Ad monetization (AdMob, Appodeal, MobVista) ✔ In-App Purchases ✔ Location tracking & real-time features ✔ Chat & messaging applications ? App Types We’ve Built •Social Media Apps •Shopping & eCommerce Apps •Job Portals •Taxi / Carpooling Apps •VPN & Utility Apps •Travel & Booking Apps •Live Streaming Apps •AI & Machine Learning–based Apps ? Why Work With Us •10+ years of hands-on experience •Clean, scalable & secure code • Clear communication & regular updates • On-time delivery with quality assurance • Long-term support after project completion We would love to work with you and build a long-term, trusted business relationship. Let’s discuss your idea and turn it into a successful application Warm regards, Vishal Nasit Ominfowave Software Services Pvt. Ltd.
₹10,000 INR in 7 days
8.4
8.4

I can develop your calculator app for Android following your Figma design with precision, ensuring both the standard and scientific features work accurately and smoothly. I have strong experience in Kotlin/Java development and have built apps that require precise logic handling, so implementing operations like trigonometric functions, logarithms and error handling (divide by zero, invalid inputs, etc.) is straightforward. I focus on delivering clean, optimized code and a fluid user experience, making sure the UI behaves exactly as designed while maintaining high performance. Once you share the Figma, I can review it and proceed with a clear and efficient implementation.
₹7,000 INR in 3 days
7.0
7.0

Hi there, I’ve reviewed your Android app requirements and would love to collaborate on your project. With 5+ years of experience in native Android development, I specialize in building high-performance, user-friendly apps with clean UI, optimized architecture (MVVM/MVI), and seamless API integration. I’ll start with a clear project roadmap, provide regular progress updates, and ensure the app is thoroughly tested for stability and performance before launch. Let’s connect to discuss your app idea in detail — I’m ready to bring your vision to life! Best, Bhargav Android Developer | Kotlin & Java Expert
₹7,000 INR in 7 days
6.9
6.9

Hello There!!! ★★★★ (Android calculator app with scientific functions and pixel-perfect Figma UI) ★★★★ I’ve gone through your requirement for building a calculator app with both standard and scientific features using your ready Figma design. The focus is on accurate calculations, smooth UI, and handling edge cases properly. ⚜ Standard & scientific calculator implementation ⚜ Pixel-perfect UI from Figma design ⚜ Fast and responsive interactions ⚜ Accurate math logic & precision handling ⚜ Error handling (invalid inputs, divide by zero) ⚜ Clean, optimized Kotlin/Java code ⚜ Full testing for reliability I have experince building Android apps with custom UI and logic-heavy features. I’ll follow your Figma strictly, implement robust calculation engine, and ensure smooth performance across devices. Please share Figma access, I can review and give exact timeline & cost. Warm Regards, Farhin B.
₹99,999 INR in 9 days
6.6
6.6

Hi, I can build your calculator using Kotlin/Java with precise math handling and clean architecture. I’ll implement both standard and scientific functions with accurate parsing and evaluation. UI will match your Figma design pixel-perfect with smooth interactions. Proper error handling (divide by zero, invalid inputs) ensured. Lightweight and optimized for fast performance. Well-tested app with clean, documented code. Ready to review Figma and start.
₹5,000 INR in 1 day
6.0
6.0

Dear client, I can deliver your complete calculator app with scientific calculator and normal calculator, Please share the UI, I have more than 9 years of exp in apps and web development.
₹10,000 INR in 5 days
6.2
6.2

As an experienced Full Stack Developer with a focus on both mobile and web applications, I believe I am the perfect fit for this project. In my 5 years of hands-on experience, I have successfully developed and deployed over 30 mobile applications. Notably, in line with your project's requirements, I've proficiently crafted math-based apps similar to your request. My strong expertise in Android development with Kotlin would ensure clean, optimized code, smooth logic functions for accurate calculations, and proper error handling. Moreover, I obsess over details- perfecting every pixel to match the design aesthetic to ensure pure user satisfaction. Having worked extensively on UI/UX design projects, such as the Victoria UAE Real Estate (Android & iOS), Tomb (Android & iOS), IVI Cryptos (Android & iOS), I've consistently delivered products aligned with the provided design comprehensively like we need here.
₹7,000 INR in 7 days
6.2
6.2

As an experienced Android developer at SoftwareLinkers, I'm confident that I have the skills necessary to build the calculator app you need. The fact that your UI/UX is already designed in Figma is a bonus, as it means we can follow a clear scope and flow for the project. With extensive knowledge of Android development using both Java and Kotlin, I have built several math-based apps and am well acquainted with the complexities involved. What sets me apart is not just my technical skills but my approach towards understanding your business goals and delivering reliable, future-proof solutions. My past clients have trusted me to build secure, scalable digital systems similar to what you require. They've appreciated my attention to detail in following UI designs precisely and my ability to write clean, optimized code. My deliverables will include a fully functional Android app along with the source code and thorough testing to ensure accuracy. If you want to work with someone who not only writes code but understands your business needs, let’s discuss further!
₹10,000 INR in 3 days
5.6
5.6

Hi, I can build your standard + scientific calculator app exactly as per your Figma, with smooth UI and accurate calculations. I’ve worked on logic-based Android features and can ensure: Pixel-perfect UI from Figma Accurate scientific calculations (sin, cos, log, etc.) Proper error handling (divide by zero, invalid input) Fast, responsive performance Stack: Kotlin (Android Studio) Timeline: ~4–6 days after reviewing Figma Budget: I can confirm exact cost once I check the design Quick step: Please share the Figma link so I can review and give you final timeline + price. Happy to start immediately. Best, Abhishek
₹12,000 INR in 7 days
5.7
5.7

✋ Hi There!!! ✋ The Goal of the project:- DEVELOP A FULLY FUNCTIONAL ANDROID CALCULATOR APP WITH STANDARD AND SCIENTIFIC FEATURES BASED EXACTLY ON PROVIDED FIGMA UI DESIGN I have carefully reviewed your requirement and understand that the UI is already finalized in Figma and the main task is to implement accurate calculator logic with smooth performance and clean code structure. I am the best fit for this project because I specialize in Android app development with strong experience in UI driven implementations and math based applications. * Implementation of standard and scientific calculator functions including trigonometric and log operations * Precise Figma based UI development with smooth and responsive user experience * Error handling with optimized and tested calculation logic I will provide UI integration, clean architecture, testing, and full source code delivery with proper debugging. I have 9+ years experience as a full stack developer and have developed similar utility and calculation based mobile apps. Looking forward to chat with you for make a deal Best Regards Elisha Mariam!
₹80,000 INR in 11 days
5.0
5.0

Hi, there! I’m a senior Android developer with strong experience in Kotlin/Java and building high-precision utility apps, and I can implement your calculator app exactly based on your Figma design. I’ll build both standard and scientific modes with accurate math logic, smooth UI interactions, and proper error handling, ensuring the app is fast, stable, and pixel-perfect to your design. You’ll receive clean, well-structured source code, fully tested functionality, and a production-ready Android build with clear delivery within your timeline. Looking forward for positive response in the chatbox. Best Regards, Hassan H
₹8,000 INR in 7 days
4.9
4.9

With over 5 years of professional experience in Mobile App Development, I am well-versed to handle your Android Calculator App project. While your project particularly calls for an experienced developer who can follow a design precisely, implement functionality accurately and match it with a smooth and responsive UI/UX, my technical competency with Java/Kotlin would align perfectly with your requirements. Specific to this project, I have successfully built several math-based apps in the past that involved complex calculation logic and involved meticulous error handling similar to what you need in dividing by zero or identifying invalid inputs. In addition, my experience as a Full Stack developer has honed my eye for UI/UX details - a strength that will let me faithfully reproduce the Figma design for the app. Working with me means gaining access to the skills and experience needed to deliver a fully functional Android app that meets your precise specifications. I assure you of clean and optimized code that’s easy to maintain, on-time delivery, and transparent communication throughout the project. Magicians make magic happen but programmers turn ideas into reality! Let's discuss your project further so we can create something magical together.
₹7,000 INR in 1 day
4.4
4.4

Hi there, I can build your Android calculator app exactly as per your Figma design with clean, accurate, and optimized functionality. • Standard + scientific calculator (sin, cos, tan, log, sqrt, etc.) • Pixel-perfect UI implementation from Figma • Smooth performance with proper state handling • Accurate calculation engine with full error handling • Clean, maintainable code in Android Studio (Kotlin/Java) I focus on building reliable math-based apps with precise logic and polished UX. Ready to review your Figma and start immediately. Thanks, Sachin
₹25,000 INR in 20 days
4.2
4.2

I can definitely help you build this. I've got plenty of experience with Android dev and can make sure the UI is pixel-perfect to your Figma design. Getting the scientific functions and error handling right is no problem at all. Just shoot me the link so I can check out the scope and give you a solid price and timeline. Ready to jump in whenever you are.
₹10,000 INR in 7 days
4.2
4.2

Hi! I have reviewed your requirement and I can build your Android calculator app with both standard and scientific features exactly based on your Figma design. I have strong experience in Android development using Kotlin/Java, including building math-based apps, utility apps, and clean UI-driven applications with precise logic implementation. I will implement a fully functional calculator with standard operations (+, −, ×, ÷, %) and scientific functions (sin, cos, tan, log, sqrt, etc.), ensuring accurate calculations, smooth UI interactions, and proper error handling like divide-by-zero and invalid input states. The app will strictly follow your Figma design with responsive UI, optimized performance, and clean, maintainable code structure. I will also ensure proper testing so all calculations remain accurate across different use cases. Before starting, please share the Figma link so I can review the full UI flow and confirm any edge-case behavior in the design. My approach will be: Figma review → UI implementation → calculation engine → testing → final APK + source code delivery. Timeline: 3–5 days depending on final design complexity I can start immediately once I get access to the Figma file.
₹5,000 INR in 3 days
3.9
3.9

Dear Hiring Manager, I am ready to develop your Android calculator application and can start immediately once the Figma design is shared. I have strong experience in Android development using Kotlin/Java, with a focus on building clean, responsive, and high-performance applications. I have previously worked on utility and math-based applications where accuracy, UI precision, and edge-case handling were critical. My approach to your project: • Figma-Based Implementation: I will strictly follow your provided Figma design to ensure pixel-perfect UI/UX implementation, maintaining consistency in spacing, typography, and interactions. • Core Functionality: Standard calculator operations (+, −, ×, ÷, %) Scientific functions (sin, cos, tan, log, sqrt, etc.) Clean expression parsing and accurate evaluation logic • Performance & Accuracy: I will ensure real-time responsiveness with optimized calculation logic and proper handling of complex expressions. • Error Handling: Robust handling for divide-by-zero, invalid inputs, overflow conditions, and malformed expressions. • Code Quality: Clean architecture, modular components, and maintainable Kotlin/Java code for future scalability. • Testing: Thorough functional testing to ensure calculation accuracy across both standard and scientific modes. I am confident I can deliver a smooth, reliable, and production-ready calculator app that matches your design exactly. Best Regards, JP
₹7,000 INR in 7 days
3.5
3.5

Hi there, You’re in the right place. I’ve successfully handled similar projects before and understand how to execute them efficiently from the start. To better define the scope, timeline, and pricing, I’d like to ask a few important questions. Due to Freelancer’s character limit, I’m unable to explain everything in detail here. Let’s connect on chat so I can share relevant past work, explain the results I’ve achieved, and provide a clear plan for your project. This will give you a better idea of my approach and how I can help. If you're ready to move forward, I’m available to discuss anytime. Looking forward to connecting. Best regards, Mayank Sahu
₹4,000 INR in 3 days
3.1
3.1

I am an experienced Android developer with strong expertise in Kotlin/Java and building math-based applications. I have developed responsive and accurate calculator apps with both standard and scientific features before. I can precisely implement your Figma design with smooth UI/UX and optimized performance. All calculations will be accurate with proper error handling for edge cases like divide-by-zero and invalid inputs. I ensure clean, maintainable code and thorough testing before delivery. Please share the Figma link so I can review and provide an exact timeline and competitive quote.
₹6,000 INR in 1 day
2.9
2.9

Hello, I can develop your Android calculator app exactly as per the provided Figma design, implementing both standard and scientific functionality with accurate and reliable computation. **What I will deliver:** • Fully functional Android app (Kotlin or Java) • Standard calculator (basic arithmetic, %, etc.) • Scientific mode (sin, cos, tan, log, sqrt, etc.) • Pixel-perfect UI implementation from Figma • Smooth performance and responsive interactions • Robust error handling (invalid input, divide-by-zero, etc.) • Clean, well-structured and maintainable code • Full source code with project setup instructions **Approach:** I will first carefully review the Figma design to map all UI components and user flows, then implement the logic layer separately to ensure accurate calculations and easy future expansion. **Quality focus:** • Precise UI matching • Fast and lightweight performance • Edge-case safe math handling • Modular architecture for maintainability **Timeline:** 3 days after Figma access **Budget:** ₹5,500 INR (fixed, within your range) I can also share examples of previous Android utility apps if needed.
₹5,500 INR in 3 days
2.9
2.9

Hello sir, I have 7+ years of experience in Android app development and have built utility-focused mobile applications with clean architecture, precise UI implementation, and performance-focused code. I’m comfortable working in both Java and Kotlin, and can translate your Figma design into a smooth, pixel-perfect calculator app with responsive interactions and accurate calculation logic. I can implement both standard and scientific modes—including trig functions, logarithms, roots, percentages, memory handling, and robust error handling (invalid expressions, divide-by-zero, edge cases)—while keeping the app fast, clean, and reliable. Once you share the Figma link, I’ll review the scope carefully and give you an accurate timeline and best quote based on the exact UI flow. Thanks,
₹22,000 INR in 7 days
1.9
1.9

Surat, India
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