Formula Book

Formula Book is a simple and powerful offline reference app designed to help students, learners, and professionals organize, save, and quickly access important formulas in one place.

Create your own formula library, organize formulas by subject and topic, add variables and worked examples, and keep your most important formulas available whenever you need them.

📚 Build Your Formula Library
Save detailed formulas with:

Formula name
Formula expression
Description
Subject
Topic
Variables
Units
Explanation
Worked examples
Tags
Edit, duplicate, favorite, pin, archive, or delete formulas whenever you need.

🧮 Multiple Subjects
Organize formulas across subjects such as:

Mathematics
Physics
Chemistry
Computer Science
Statistics
Economics
Finance
Engineering
Biology
Other
Create custom subjects and topics to match your studies.

🔤 Variables & Units
Add detailed variable information to each formula.

For example:

v — Velocity — m/s
t — Time — s
d — Distance — m
Understand what each symbol represents without having to search elsewhere.

📝 Worked Examples
Add practical examples to formulas with:

Problem
Given values
Formula used
Solution
Final answer
Unit
Keep useful solved examples alongside your formulas for faster revision.

⭐ Favorites & Pinned Formulas
Save important formulas as favorites and pin frequently used formulas for quick access.

Keep the formulas you use most within easy reach.

🔍 Powerful Search
Find formulas quickly by searching through:

Formula names
Expressions
Descriptions
Subjects
Topics
Variables
Units
Tags
Examples
🗂️ Organize by Topics
Keep your formula library organized with topics such as:

Mathematics

Algebra
Geometry
Trigonometry
Calculus
Probability
Matrices
Physics

Mechanics
Thermodynamics
Electricity
Magnetism
Optics
Waves
Computer Science

Algorithms
Data Structures
Complexity
Networking
Operating Systems
Databases
You can also create your own topics.

📖 Recently Viewed
Quickly return to formulas you've recently opened.

Track your recently viewed formulas locally and clear the history whenever you want.

📊 Statistics
View useful information about your formula library:

Total formulas
Total subjects
Total topics
Favorite formulas
Pinned formulas
Archived formulas
Most viewed formula
Most used subject
Most used topic
Recently added formulas
🎨 Clean & Modern Design
Formula Book provides a clean Material 3 interface with:

Light Theme
Dark Theme
System Theme
Readable formula displays
Subject and topic filters
Clean cards
Simple navigation
Responsive layouts
🔒 Private & Offline
Your formulas stay on your device.

No account required
No login required
No Firebase
No backend
No online API
No required internet connection
Your study data remains private
Whether you're preparing for exams, studying mathematics, physics, chemistry, computer science, engineering, statistics, or simply building your own reference library, Formula Book gives you a convenient way to organize and access your formulas anytime, completely offline.