Core Principles
Built for speed, privacy, and simplicity
Zero Data Collection
All computations occur directly in your browser's V8 engine. No cookies, no analytics tracking, and zero database queries.
Instant & Offline-First
Zero round-trip latency to remote servers. The tools load instantly, cache efficiently, and function without interruption.
100% Free & Open Source
Every line of code is inspectable on GitHub under the permissive MIT license. Fork it, contribute, or run it locally.
Curated Showcase
Popular Tools & Calculators
Direct browser execution with zero login or signup required.
Popular
Finance
SIP Calculator
Calculate expected returns on Systematic Investment Plans with Indian Rupee formatting and wealth charts.
Launch Tool
Featured
Finance
Interest Calculator
Compare simple vs compound interest over time with dynamic graphs, flexible compounding, and CSV export.
Launch Tool
India
Tax & Compliance
GST Calculator
Compute Goods & Services Tax quickly with standard 5%, 12%, 18%, and 28% slabs for inclusive or exclusive amounts.
Launch Tool
FY 2024-25
Tax & Compliance
Income Tax Calculator
Accurately compare tax liabilities under the New vs Old Tax Regime in India with standard deduction calculations.
Launch Tool
Updated
Productivity
Text & String Utilities
Transform, clean, count, and format text content instantly. Includes case convert, spaces cleaner, and morse code.
Launch Tool
Secure
Security
Password Generator
Generate cryptographically strong passwords using browser-native entropy with custom rules and age verification.
Launch Tool
Community Loved
Trusted by creators & financial planners
"The interest and SIP calculators are blazingly fast with precise Indian Rupee formatting. Zero ads in the way and no tracking."
JD
John D.
Certified Financial Advisor
"I use the password generator and text tools daily. Knowing that it's 100% open source gives me total peace of mind."
SL
Sarah L.
Full-Stack Engineer
"The new dark and light mode UI is stunning. The contrast and responsiveness are on par with modern SaaS applications."
RK
Rahul K.
Product Designer