
All your money, one calm view
Spending, books and what you are owed, the moment you open the app.
HomeExtraby keeps your spending, shared books, chits, daily lending and documents in one calm place. Split any bill, see who’s paid, and settle in a tap.

Every rupee you spend, share, lend or collect — in one calm place, always up to date.
01Inside the app

Spending, books and what you are owed, the moment you open the app.
Home
Extraby works out the fewest payments. Record one and every balance updates.
Settle up
Share from any payment app or snap a photo. Amount, shop and category read for you.
Scan
Every book has its own address. Forward a bill and the entry is added.
Email
Each book offers categories that fit: cement, sand and steel for a site.
Books
Auctions, dividends and who has paid this month, for every member.
Chits
Collect loans line by line. Cash in hand updates as you go.
Daily finance
Receipts, bills, warranties and IDs in private or shared folders.
Documents02Try it
Move the amount, pick who’s in, then mark people as paid. This is how a book feels.
A demo on this page — nothing is saved.
03Why Extraby
Spending is easy. Remembering who owes what — and following up until it’s actually settled — is the hard part.
Bank SMS, payment apps, cash and notes — never in one place.
By the fifth bill, memory isn’t a ledger.
Dividing four ways, then checking it again.
Chasing the same person for the same amount.
04Security
What we do today — stated plainly.
Everything between the app and our servers travels over HTTPS.
On Android, lock Extraby behind your fingerprint or device PIN.
Decide who can add, edit or only view — person by person, book by book.
Entries show who added or changed them, so edits don’t happen silently.
You can ask us to delete your account and its data.
We do not sell your personal information.
05Get the app
Extraby is free to download on Android. The iPhone app is being built — we’ll list it here when it’s on the App Store.
Opens Extraby on Google Play.
06Questions
Yes, the Android app is free to download from Google Play.
Not yet. It’s being built, and the App Store button on this page will go live when it’s published.
No. Extraby is a record of who owes what. You pay each other however you usually do, then mark the share as paid in the book.
To see their share and get notified in the app, yes — invite them to the book. You can still record an expense for someone before they join.
This website is available in English, हिन्दी, తెలుగు, தமிழ், ಕನ್ನಡ and मराठी. The app itself is in English today.
Email us at byjanbooks@gmail.com.