Rapid Tap Test (toolpods.io)
Measure how fast you can tap a button in a given time. Quantify your clicking speed in clicks per second.
Reaction Time Test (toolpods.io)
Measure your reaction time in the browser. Respond to visual stimuli and see your results compared to animals.
Reaction Time Test (www.ruri.info)
Free reaction time measurement tool. Click when the screen turns green and measure your average response speed over 5 trials. Use as a mini-game in streams or as an OBS Studio browser source.
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.
Regex Checker (www.oh-benri-tools.com)
An online tool for testing JavaScript regular expression patterns in real time. Highlights matched portions and supports i/g/m flag toggling, with all processing done in the browser.
Regex Tester (www.piliapp.com)
An online regular expression tester. Enter a regex pattern and test string to find matches, groups, and validate your regex patterns in real time.
Regex Tester (toolpods.io)
Test regular expression patterns against text input and see match results in real time.
Relationship Map (atl2.net)
A web tool for creating relationship diagrams. Register people's photos and names to build a visual relationship map. Useful for tracking children's social connections and organizing interpersonal relationships.
Repeat Timer (www.oh-benri-tools.com)
An online timer that automatically restarts when it reaches zero. Ideal for interval training or recurring task breaks, with alarm sound and fullscreen display support.
Reversi (toolpods.io)
Browser-based reversi (Othello). Outflank and flip opponent's pieces to control the board. Includes AI opponent.
RGBA to RGB Converter (www.oh-benri-tools.com)
An online tool that calculates the final RGB value by combining an RGBA (transparent color) and a background RGB color. Useful for previewing how a transparent color will actually appear.
Roll Dice (www.piliapp.com)
An online dice roller for random number generation. Roll one or multiple virtual dice with customizable sides for board games, tabletop RPGs, and classroom activities.
