Vision Check Web (eye.onl.jp)
A web tool for a quick vision self-check in the browser using Landolt C optotype symbols. Useful as a preliminary check before an eye exam.
FIRE Calculator (fire.onl.jp)
A web tool to calculate the assets and time needed to achieve FIRE (Financial Independence, Retire Early) by entering current assets, monthly cash flow, and target amount. Simulations based on the 4% rule.
Sound Level Meter (geq.onl.jp)
A web tool to measure ambient sound levels in real time using your microphone. Displays decibel readings for checking noise levels and verifying recording environments.
Location Share Web (gps.onl.jp)
A web app to share your current GPS location with others in real time. Send and receive location information simply by sharing a URL.
Real Estate Valuation Web (land.onl.jp)
A web tool to check an estimated real estate valuation for condos and houses by entering address, age, and size. Useful for understanding market prices when selling or buying property.
Mortgage Calculator Web (loan.onl.jp)
A mortgage simulation web tool that calculates monthly repayments, total repayment amount, and total interest from loan amount, interest rate, and repayment period. Helpful for planning home purchases.
Map Web (map.onl.jp)
A web app to display, search, and browse maps in the browser. Provides map features including current location and destination search through a simple UI.
Lunch Map Web (mapmemo.onl.jp)
A web app to pin and note lunch spots on a map and share them with others. Manage your favorite restaurants and places you want to visit directly on a map.
Distance Measurement Web (measure.onl.jp)
A web tool to measure the distance between two points in real time using GPS in the browser. Useful for tracking travel distance during walks and exercise.
Character Counter (moji.onl.jp)
A web tool that counts characters, words, and lines in real time as you type. Useful for checking character limits on blog posts, social media, and other content.
Pedometer Web (pedometer.onl.jp)
A pedometer web app that counts steps using your smartphone's accelerometer sensor. Use it as a step counter without installing any app.
Font Trial Web (pen.onl.jp)
A web tool to try out and preview text in various fonts. Useful as a reference when choosing fonts or checking character designs.
