Free · Open · Always Updating

Tools & games
built for everyday life

A growing collection of practical tools and fun games.
No installs. No sign-ups. Just open and use.

8
Tools
3
Games
∞
Free

Explore all projects →
Tools
8 projects
💛
BMI Calculator
Health
BMI Calculator
Calculate your Body Mass Index instantly. Visualize your healthy weight range.
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🎨
Color Code Picker
Design
Color Code Picker
Pick any color, convert between HEX, RGB and HSL. One tap to copy.
Open Tool →
🔊
Volume Meter
Measurement
Volume Meter
Real-time ambient sound level detection using your device microphone.
Open Tool →
☀️
Light Meter
Measurement
Light Meter
Measure ambient brightness in real time using your device light sensor.
Open Tool →
⚡
Internet Speed Test
Measurement
Internet Speed Test
Test your download and upload speed directly in the browser. No app needed.
Open Tool →
📐
Angle Meter
Measurement
Angle Meter
Measure tilt and angle precisely using your device gyroscope sensor.
Open Tool →
🧭
Compass
Navigation
Compass
Digital compass using your device magnetic sensor. Find your direction anywhere.
Open Tool →
⏱
Note & Reminder Timer
Productivity
Note & Reminder Timer
Write notes, set countdowns, get reminded. Stay on top of every task.
Open Tool →
Games
3 projects
🐉
Dragon
Arcade · Game
Dragon
A dragon-themed twist on the classic snake game. Smooth controls, addictive gameplay. How long can your dragon grow?
Play Now →
♟
Gomoku
Strategy · Game
Gomoku
Five in a row with custom piece skins. The classic strategy game, beautifully redesigned with elegant controls.
Play Now →
⬤
Go
Strategy · Game
Go
The ancient game of Go with customizable rules and piece styles. Deep strategy for players of all skill levels.
Play Now →
About
1to3 Labs

A personal laboratory for building useful things. Every tool here solves a real problem I encountered. Every game is something I wanted to play.

All projects run entirely in your browser — no account, no installation, no cost. Everything is free and new projects are added regularly.