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Apps & Featured Products

Explore Caitty's full library of mobile apps, then keep going into the newest browser tools — image compression, AI detection, whiteboarding, and more.

40 products
Lucent app icon

Lucent

Transparent Phone Launcher

A live camera view behind your app icons, with water, float and tilt effects, smart folders and search.

Google Play
Serein app icon

Serein

Sleep Sounds & Mixer

Real field recordings, a custom sound mixer and a gentle sleep timer. Listen offline without an account.

App Store Google Play
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Hardware Testing

8 tools
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Sound Test

Test speakers & audio
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Keyboard Test

Test all keys
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Typing Speed Test

Test WPM speed & accuracy
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Mouse Test

Test clicks & scroll
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Click Speed Test

Test clicks per second (CPS)
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Reaction Time Test

Test visual reaction speed
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Camera Test

Test webcam
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Mic Test

Test microphone
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Developer Tools

27 tools
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Google Play Earnings

Calculate developer payouts & fees from CSV/Excel
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AppReview Hub

Fetch, search & analyze app reviews
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OpenRouter API Tester

Test your API key and model calls directly from your browser
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Sketch Whiteboard

Draw diagrams and export PNG, SVG, or JSON
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Markdown Editor

Live preview, fullscreen, HTML & PDF export
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JSON Formatter

Format & validate JSON
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HTML Formatter

Format HTML code
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CSS Formatter

Format CSS code
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SQL Formatter

Format SQL queries
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XML Formatter

Format XML code
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Regex Tester

Test regular expressions
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Diff Tool

Compare text
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Base64

Encode/decode Base64
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Base64 to Image

Convert Base64 to image & preview
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URL Encoder

URL encode/decode
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HTML Entities

Escape HTML entities
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MD5 Hash

Generate MD5 hash
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SHA Hash

Generate SHA hashes
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UUID Generator

Generate UUIDs
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Password Generator

Generate passwords
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Timestamp

Convert timestamps
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Cron Generator

Build & explain cron schedules
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Hex Converter

Hex conversion
0️⃣

Binary Converter

Binary conversion
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Color Converter

Convert color formats
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JSON to CSV

Convert JSON to CSV
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IP Lookup

IP address info
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Text Tools

5 tools
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Word Counter

Count words & chars
Aa

Case Converter

Change text case
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Lorem Ipsum

Generate placeholder
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Email Validator

Validate email
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QR Code Generator

Create QR codes
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Screen Tools

20 tools
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Monitor Color Test

Test display colors
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Fullscreen Prank

Fake screen pranks

White Screen

Pure white display

Black Screen

Pure black display

Red Screen

Pure red display

Green Screen

Pure green display

Blue Screen

Pure blue display

Yellow Screen

Pure yellow display

Orange Screen

Pure orange display

Pink Screen

Pure pink display

Purple Screen

Pure purple display
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Matrix Screensaver

Digital rain effect
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DVD Screensaver

Bouncing logo
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Flip Clock

Retro flip clock
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Fullscreen Clock

Large time display
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Quote Screensaver

Inspirational quotes
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White Noise

Static noise effect
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Radar Screen

Radar animation
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Hacker Screen

Hacker typing effect
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Fake Updates (Pranks)

5 tools
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Fake Update

All fake updates
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Windows 10 Update

Fake Win10 update
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Windows 11 Update

Fake Win11 update
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Mac Update

Fake macOS update
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Ubuntu Update

Fake Linux update
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Android Update

Fake Android update
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Calculators

8 tools
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Google Play Earnings

Calculate developer payout & fee cut
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Age Calculator

Calculate age
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BMI Calculator

Body mass index
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Percentage

Calculate percentages
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Loan Calculator

Calculate loans
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Salary Calculator

Calculate salary
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Meeting Cost

Calculate meeting cost
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Unit Converter

Convert units
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Knowledge Base

10 tools
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Phone Country Lookup

International calling codes
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Calendar

View calendar
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Periodic Table

Chemical elements
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ASCII Table

ASCII reference
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HTTP Status Codes

HTTP code reference
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Keyboard Shortcuts

Shortcut reference
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Country Codes

ISO country codes
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AI Prompts

Prompt templates
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Email Templates

Email templates
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AI Tools Directory

AI tools list
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Other Tools

4 tools
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Stopwatch

Online stopwatch
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Random Generator

Generate random
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Invoice Generator

Create invoices
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Brain Test

Test your brain
Why Caitty

Practical products, organized for fast access.

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Fast browser utilities

Use focused tools for image compression, code formatting, text conversion, color work, QR codes, timestamps, hashes, and everyday checks without digging through a crowded portal.

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Searchable app directory

Find mobile apps, developer tools, screen utilities, calculators, and reference pages from one homepage. Each product card keeps the listing compact while the page still explains what the collection covers.

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Built for real workflows

Caitty products cover common work patterns such as shrinking images for websites, blocking distracting URLs, testing devices, tracking habits, saving photo memories, and preparing clean data.