BigBro Apps is a suite of fast, free and reliable web tools — built to make everyday calculations and decisions effortless. Explore what's live today and what's coming next.
Every BigBro app is built with the same promise — clean design, accurate results and zero friction. Here's what's available right now.
Online EMI, Tax, SIP, Loan and a full range of utility calculators — built to be quick, accurate and mobile-friendly.
A unified converter for units, currencies, files and formats — designed to handle the everyday conversions you actually need.
Lightning fast notes and lists that sync across your devices — no signup needed to get started, just open and write.
We obsess over the small details so you don't have to. Every app shares the same DNA — fast, focused and friendly.
No signups, no paywalls. Just open and use — every tool loads in a blink.
Your data stays on your device. We never sell, share or track without consent.
Mobile, tablet, desktop — every BigBro app is fully responsive out of the box.
We continuously refine our apps based on real user feedback and modern standards.
Consistent design and experience across every app in the BigBro ecosystem.
Every feature is shaped by feedback. Have an idea? We're listening.
We're just getting started. Here's a peek at what we're building next.
Our flagship calculator suite for finance, tax, investments and utilities.
One converter for everything — units, currencies, files and formats.
Fast, private, beautifully simple notes with markdown and sync.
Productivity, finance, learning — tell us what should come next.
20+ calculators in one clean interface. No signup. No clutter. Just answers.
