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LEMON APPLICATIONS

  LEMON WEB-APPS

We developed intuitive tools designed to simplify tasks from tax calculators to private file sharing—all custom-built for you.

BMI Calculator

This BMI Calculator is an interactive tool for determining Body Mass Index (BMI) based on weight and height. It features gender selection, smooth sliders, and a flip animation for a seamless experience. BMI is categorized into Underweight, Healthy, Overweight, and Obesity classes, each with color-coded backgrounds for easy interpretation. Personalized descriptions provide insights to help users understand their weight status and make informed health decisions. Whether tracking progress or checking BMI, this tool is simple, accurate, and engaging.

  • Features: Instant QR Code Generation – Enter text and generate a QR code instantly
  • Language: Any language!
  • Website: https://apps.lemon-web.net/bmicalc
  • Developed in 2025.

Background Remover

AI Background Remover is a web-based tool that allows users to quickly and effortlessly remove backgrounds from images using AI-powered processing via the Remove.bg API. Simply upload an image, and within seconds, receive a high-quality transparent background version ready for download. The app features a modern, user-friendly interface with real-time progress tracking, an auto-cleaning system to manage uploaded files, and a seamless restart option. Perfect for designers, marketers, and anyone needing quick background removal!


CALCULATE SYSTEM UPTIME

The uptime calculator is a simple yet powerful tool designed to streamline SLA reporting by calculating precise uptime percentages based on total downtime in days, hours, and minutes. With its intuitive design, detailed breakdowns, and built-in industry benchmarks, it provides actionable insights into system reliability and performance. Whether for internal analysis or stakeholder presentations, this calculator ensures accurate, error-free metrics, making it an essential resource for anyone managing service-level agreements and striving to meet or exceed uptime standards.



LEMON CLOUD

Running and based on the popular ownCloud open source web applications, file sync and share community project, Lemon Cloud provides greater control of data — combining greater flexibility, openness and extensibility with on premise servers and storage.





FACE-APP

FACE-APP is an innovative facial expression analysis tool designed to interpret and quantify emotions with precision. Leveraging the advanced capabilities of the Google Cloud Vision API, the app identifies and measures key emotional states, including Happiness, Anger, Sorrow, Surprise, and Confidence, by analyzing facial features in real-time or from uploaded images.

The app provides users with detailed insights into their emotional expressions, making it a versatile solution for various applications. Whether you’re looking to enhance self-awareness, improve communication, gather customer feedback, or simply enjoy exploring emotions in a fun and engaging way, LEMON FACE-APP has you covered.



GUITAR-TABBER

The GuitarTabber Player is a web application designed for guitar enthusiasts to explore a vast collection of guitar tabs and play them directly within their browser. The app provides an intuitive interface where users can search for their favorite songs, view detailed tablature, and hear how each tab sounds using an integrated playback feature powered by AlphaTab JS. Whether you're a beginner looking to learn or an experienced guitarist refining your skills, the GuitarTab Player offers a seamless experience with customizable playback speed, highlighting features, and support for multiple tunings. Its responsive design ensures compatibility across devices, making it easy to practice on the go.



IMPOSSIBLE QUIZ

The Impossible Quiz is a deceptively simple yet hilariously frustrating online math challenge designed to test your focus, reflexes, and patience. What starts as a basic arithmetic question quickly turns into an unexpected experience that only 1% of over 4,000 participants have managed to complete. It’s a light-hearted way to gauge your mental sharpness, with a twist that catches most people off guard. Whether you're a math whiz or just looking for a fun brain teaser, this quiz dares you to try — but don’t be surprised if it messes with your confidence along the way..



MALAYSIAN HIGHWAY CCTV

The Malaysian Highway CCTV Feed offers real-time access to major highways, enabling users to monitor traffic and road conditions. With a user-friendly interface, it allows quick searches or browsing of highway routes. Featuring live feeds from Lembaga Lebuhraya Malaysia (LLM), it provides trusted, up-to-date information to help users make informed travel decisions.


MALAYSIAN RINGGIT INFLATION CALCULATOR

The Malaysian Ringgit Inflation Calculator is a handy web-based tool designed to help users understand the real value of money over time in Malaysia. By factoring in historical inflation rates, this calculator allows users to determine how the purchasing power of the Ringgit has changed from one year to another. Whether you're comparing past salaries, assessing the impact of inflation on savings, or simply curious about how much a given amount from a previous year would be worth today, this tool provides quick and accurate insights. With its user-friendly interface and reliable data, the Malaysian Ringgit Inflation Calculator is an essential resource for financial analysis, budgeting, and economic research.


PDF TO WORD Converter

The PDF to Word Converter is a simple, free online tool I built to help users convert PDF files into editable Word documents quickly and securely. It was developed in response to frequent requests from colleagues who needed an easy way to make changes to PDF content. The application is mobile-friendly, requires no sign-up, and uses a trusted third-party API to ensure accurate conversion. Uploaded files are handled securely, encrypted during processing, and automatically deleted afterward to maintain privacy and save server space. While it's currently free with a monthly limit of 800 conversions, there's room to scale if usage grows alongside my website.



PORT SCANNER

The LEMON Port Scanner is a user-friendly web-based application designed to help users efficiently scan a specified range of ports on a given IP address or domain. With a sleek and responsive interface, the app allows users to input target details, select port ranges, and view results in real-time. It features an intuitive design with helpful tools such as an INFO button that displays a list of common port usages in a modal popup, ensuring users understand port functionalities. Enhanced with a "Back to Lemon Web" button for seamless navigation, this app is a valuable tool for network diagnostics, delivering quick insights into open ports while maintaining simplicity and elegance.



QuickBASIC

Quick Basic 4.5 was a gateway into programming for many in the late ‘80s and ‘90s, offering a simple yet powerful environment to write, test, and compile code before the era of modern GUI-based development. Whether you’re revisiting it for nostalgia or testing your classic coding skills, the experience of typing commands in a blue DOS screen still carries a unique charm. To bring back those memories, I’ve set up a Quick Basic 4.5 online emulator where you can run old-school BAS programs, experiment with BASIC syntax, and relive the early days of coding. Try it out here.



QR-CODER

LEMON QR-CODER is a fast, user-friendly, and lightweight QR code generator designed for simplicity and efficiency. Whether you need to encode text, URLs, or other information into a QR code, this app provides a seamless experience with a clean and modern interface.



SALARY PCB CALCULATOR

The Malaysian Salary Tax Deduction Calculator for 2025 is a user-friendly web application designed to help individuals and businesses accurately calculate their net monthly earnings by accounting for deductions such as PCB (Potongan Cukai Bulanan), SOCSO, EIS, and EPF. By inputting their gross salary, users can quickly obtain a breakdown of deductions and their final take-home pay, ensuring compliance with the latest government regulations. The app is accessible on any device, saving time and enhancing financial planning by providing accurate and up-to-date information.





WEB-RADIO

LEMON WEB-RADIO is a popular online platform offering Malaysian radio streaming, providing listeners with access to a wide range of local radio stations. From news and talk shows to music and entertainment, LEMON WEB-RADIO connects audiences to the vibrant Malaysian radio scene, allowing them to enjoy live broadcasts from anywhere.



WEB-TV

The platform will initially feature a wide range of local channels, including RTM1, RTM2, TV3, OKEYTV, RTM Sukan, RTM Berita, TV7, and RTM Parliament. These channels were selected to ensure a comprehensive representation of Malaysian entertainment, news, sports, and parliamentary broadcasts. By focusing on local channels, the platform will celebrate and promote Malaysian culture and content.




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APPS THAT WE HAVE DEVELOPED SO FAR

  Native Desktop Applications
  Web Based Classic DOS-Games
  HTML5-Based Web Games
  Customized Web and Applications
  Self or Private Cloud Solutions
  Project Management System
  School Management System
  IT Helpdesk System

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