CalcTools

lstudios

About this app

CalcTools is Your Complete Offline Calculator & Converter Toolkit

Whether you're a student, engineer, developer, business professional, or someone who needs reliable everyday calculations, **CalcTools** provides all the essential tools in one fast, lightweight, and completely offline app.

**CalcTools** is a powerful **100% offline** utility app that combines essential calculators, converters, and productivity tools into one easy-to-use application. Whether you're converting units, calculating dates, managing birthdays, or solving everyday calculations, CalcuTools has everything you need—without requiring an internet connection.

🚀 Why Choose CalcuTools?

✅ 100% Offline – No internet required
✅ Fast and accurate calculations
✅ Clean and modern Material Design
✅ Privacy-first – Your data stays on your device
✅ No sign-up or account required
✅ Lightweight and easy to use

📏 Unit Converters

Convert between hundreds of units instantly.

Includes:

* Length
* Weight
* Temperature
* Area
* Volume
* Speed
* Pressure
* Energy
* Power
* Fuel Economy
* Data Storage
* Time
* Angle

View multiple conversion results at once and quickly reverse conversions with a single tap.

📅 Date & Time Tools

Perform powerful date and time calculations with ease.

Features include:

* Date Difference Calculator
* Time Difference Calculator
* Date & Time Difference
* Age Calculator
* Add or Subtract Dates
* Working Days Calculator
* Countdown Calculator
* Count-Up Calculator

🎂 Birthday & Anniversary Manager

Never miss an important event.

Save and manage:

* Birthdays
* Wedding anniversaries
* Work anniversaries
* Custom events

Features:

* Days remaining until the next event
* Age on the next birthday
* Local reminder notifications
* Import & Export your data

💰 Finance Calculators

Useful financial tools including:

* EMI Calculator
* Loan Calculator
* SIP Calculator
* Simple Interest Calculator
* Compound Interest Calculator
* GST Calculator
* Discount Calculator
* Tip Calculator
* Savings Calculator

🧮 Math Tools

Includes:

* Scientific Calculator
* Percentage Calculator
* Fraction Calculator
* Ratio Calculator
* Average Calculator
* Prime Number Checker
* LCM & GCD Calculator
* Random Number Generator

💻 Developer Tools

Helpful utilities for developers:

* JSON Formatter
* Base64 Encoder & Decoder
* UUID Generator
* Hash Generator
* Regex Tester
* HEX ↔ RGB Color Converter

⭐ Smart Features

* Favorite your most-used tools
* Recent tools history
* Powerful search
* Calculation history
* Copy & Share results
* Backup & Restore
* Light & Dark themes

🔒 Privacy First

CalcTools is built with privacy in mind.

* No account required
* No tracking
* No cloud storage
* No unnecessary permissions
* Everything is stored locally on your device

Download **CalcTools** today and keep your favorite calculators and converters always available—anytime, anywhere, even without an internet connection.

What’s new

🎉 Welcome to the first release!

📏 Unit converters for length, weight, temperature, area, volume, speed, and more
📅 Date & Time calculators, including age, date difference, countdown, and working days
💰 Finance calculators such as EMI, GST, SIP, loan, and interest calculators
🧮 Math tools including scientific, percentage, ratio, fraction, and more
💻 Developer tools like JSON Formatter, Base64, UUID Generator, Hash Generator, and HEX ↔ RGB Converter