NaNa Apps

Explore our diverse range of Smart tools and services.

A collection of tools and services that help you to make your work easier and more efficient.

Financial Analysis Apps

Here we present a range of applications that help users make informed stock investment decisions. NaNaLab’s CEO is an expert with firsthand experience in publishing a book on asset allocation investment strategies. These apps provide tools for asset allocation, portfolio construction, backtesting, and real-time market analysis.

Investment Service

NaNa Investment

Our core investment platform.

A comprehensive investment analysis platform designed for portfolio exploration and simulation. It provides real-time access to major market indices such as KOSPI, KOSDAQ, NASDAQ, and the S&P 500, and allows users to search individual stocks to view recent price data. The platform introduces well-known asset allocation strategies and explains how to implement them using ETFs. Users can copy selected portfolio recipes into their personal inventory and run backtests, such as simulating how a $10,000 investment made ten years ago might have performed. In addition to sample portfolios, users can customize portfolios using their own selected assets. When signed in with a Google account, portfolio recipes are securely saved to the user’s Google Drive. NaNa Lab does not collect or store personal investment data; all information remains within the user’s own account.

Go to Service

Utility Apps

A collection of free tools for anyone working in an office environment. From document and image editing to speech-recognition-powered calculators designed with accessibility in mind, these tools help improve everyday productivity.

QR Generator

QR Code Generator

Instantly convert URLs into QR codes directly in your browser. Since the QR codes are generated locally without passing through external servers, this tool operates significantly faster than most alternatives. It even works reliably when your internet connection is unavailable. The service is 100% free, and you can download clean, well-designed QR codes with a single click.

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Smart Calculator

Smart Calculator

A lightweight yet powerful smart calculator designed for everyday and office use. With built-in speech recognition, it offers improved accessibility in situations where typing is inconvenient. The calculator displays calculation history on screen, helping users keep track of multiple consecutive operations. It also includes currency conversion features, making it especially useful for accounting and financial tasks.

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Fortune Teller

Fortune Teller

Start your day with a glimpse into your destiny. This application provides daily fortune readings based on your zodiac sign and date of birth. Whether you are looking for advice on love, career, or health, our Fortune Teller offers insights to help you navigate your day with confidence. It is a fun and mystical way to take a moment for yourself amidst a busy schedule.

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Away Screen

Away Screen

Maintain professional etiquette even when you're away from your desk. This convenient tool transforms your monitor into a clear status display, greatly helping communication with colleagues in the office. It also features an automatic full-screen mode for a seamless status display experience.

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BMI Calculator

BMI Calculator

Take control of your health journey with this comprehensive Body Mass Index calculator. It goes beyond simple calculation by analyzing your current weight category and providing actionable insights. The tool calculates exactly how much weight you need to lose or gain to reach specific BMI milestones (like 90, 100, or 110), helping you set and track realistic fitness targets.

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Lucky Cannon

Lucky Cannon

A delightful and interactive tool designed to randomly select one lucky person from a group. Whether you are organizing a team event, hosting a prize draw, or simply deciding who goes first, this app transforms the process into an exciting game. Featuring fun animations and a playful interface, it builds anticipation and adds a spark of joy to the moment of selection. Say goodbye to boring methods and let the Lucky Cannon decide the winner with a blast of fun!

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Design Tools

Tools for designers, marketers, and content creators to streamline visual workflows.

Lipsum Generator

Lorem Ipsum Generator

A simple efficient tool for generating placeholder text ("Lorem Ipsum") for your design and typesetting projects. Whether you need a few paragraphs for a website mockup or extensive dummy text for a print layout, this tool provides standardized Latin text quickly. It helps designers focus on visual elements without being distracted by meaningful content. Customize the amount of text generated to perfectly fit your design constraints.

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Smart GIF Studio

Smart GIF Studio

Smart GIF Studio is a free, browser-based GIF editor that lets you resize animations, crop or add padding, reduce file size with multiple optimization options, rotate/flip, reverse playback, adjust speed, and cut or trim frames. It also supports converting GIFs to MP4, WEBM, and JPG, and keeps a simple edit history for faster repetitive work. All processing runs locally in your browser, so files are not uploaded to external servers, making it suitable for handling sensitive media with confidence.

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Video to GIF

Video to GIF

Marketers, designers, webmasters, and other media professionals often need to convert videos into GIF files for presentations, documentation, or social media content. This lightweight GIF converter offers a much faster and more convenient alternative to launching heavy desktop software such as professional video editors. Built on a serverless architecture, all processing is performed locally on the user’s computer, so video data is never uploaded or transmitted externally. This makes the tool suitable for converting sensitive or confidential video materials while maintaining both efficiency and data privacy.

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Image Resize

Image Resizer

Marketers, designers, and planners often need to process large numbers of images at once. From simple resizing and aspect ratio adjustments to cropping images for social media uploads, NaNa Lab’s Image Resizer allows you to complete these tasks instantly with a single click. All image processing is performed locally in your browser without using external servers, which means your files are never uploaded and data privacy is fully preserved. Because images are not transferred over the network, the tool operates faster than many conventional online services, helping you save time by avoiding unnecessary uploads and downloads.

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Document Tools

Tools for analyzing, editing, and managing your documents.

Doc Compress

Smart Doc Compressor

Compress PDF, PPT, Word, and image files quickly and efficiently. Unlike many online tools that upload your documents to external servers, NaNa Lab processes all files locally within your browser, ensuring that no data is transmitted or stored elsewhere. This makes Smart Doc Compressor suitable for handling confidential documents and files containing personal information, while improving efficiency, productivity, and security at the same time.

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Count Words

Count Words

A robust and precise character counting tool designed for writers, editors, and students. Beyond simple word counts, it provides detailed statistics including character counts with and without spaces, paragraph counts, and reading time estimates. It supports various languages and is optimized for checking limits on social media posts, essays, and reports. All text processing happens instantly in your browser, ensuring your content remains private.

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Document Analyzer

Document Analyzer

Gain deep insights into your documents with this powerful analysis tool. It supports both PDF and DOCX formats, extracting key metrics such as word count, page count, and keyword frequency. Perfect for reviewing legal contracts, academic papers, or business reports, it helps you understand the structure and content of your files at a glance. Like our other tools, it runs entirely client-side, guaranteeing that your sensitive documents never leave your device.

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PDF Merger

PDF Merger

Efficiently combine multiple PDF documents into a single, organized file. Whether you're merging scattered reports, receipts, or study materials, this tool handles it all locally in your browser. Since no files are uploaded to external servers, you can process sensitive content with complete peace of mind, ensuring your data remains private and secure.

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AI Chatbot Prototypes

This section introduces chatbots equipped with various features that can be used for business and office tasks. The chatbots presented here are prototype versions that have received positive feedback from users. Due to token usage limits, they are intended for brief trial purposes only. For organizations interested in internal deployment, token usage will be billed on a pay-as-you-go basis.

Chatbot V5

Chatbot V5

An advanced multi-modal chatbot prototype designed to support professional workflows. It features speech recognition for voice-based interaction and allows users to upload PDF files to generate conversations grounded in the document content, such as discussing legal topics using uploaded law texts. Conversation results can be summarized into one or two A4 pages and exported for printing or saving as PDF files, making it useful for report preparation and document review. Users can also organize their work documents and consult the AI for structured assistance. Optional Google Search integration enables the chatbot to actively search the web when answering questions. Powered by Gemini 3.0. As a prototype, usage is limited to 20 conversations per day. For internal or enterprise adoption, the service can be switched to a pay-as-you-go pricing model.

Try V5

Frequently Asked Questions

Are these tools free to use?

Yes, our Utility Tools such as the QR Code Generator, Image Resizer, and Smart Doc Compressor are completely free to use for individual users. Our AI chatbots and investment prototypes may have specific usage limits or require API keys for extensive use.

What makes NaNa Lab's chatbots different?

Our chatbots are designed with a focus on business and office productivity. We iterate rapidly (V1 to V5) to incorporate the latest multi-modal capabilities, ensuring they can handle complex tasks involving text, images, and data analysis. Openned versions are free-to-test prototype. Please contact us for business setup.

Can I trust the investment analysis tools?

Our investment tools are built based on proven asset allocation strategies. Therefore, our system is more reliable than anonymous oppinions. However, all investment involves risk, and these tools are for informational purposes only.

Do you store my uploaded documents?

For tools like 'Smart Doc Compressor' and 'Image Resizer', processing is primarily done client-side or ephemerally. We prioritize user privacy and do not store your sensitive documents permanently on our servers. Only Investment Apps require Google login, but it is to allow you to save your data on YOUR GOOGLE DRIVE DIRECTORY, not our system. NaNa Apps does not have any DB servers so you do not have to worry about data leakage. Please check our Privacy Policy for more details.