Your complete billing & WhatsApp business toolkit — now available as a native app. Works offline too. Free to download.
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Android Downloads
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Windows Downloads
4.8 ★
User Rating
Android
APK · 48 MB · v2.3.2
Android 7.0+ required. Native Jetpack Compose app with Bluetooth Thermal Printing & Offline POS.
Download APKFree forever · No account needed to install
Windows
.exe Installer · 77 MB
Windows 10 / 11 required. Full desktop experience.
Download .exeRequires Grahbook account · Cloud sync included
Everything you need, built in
Create & send invoices instantly
WhatsApp billing & reminders
Customer ledger & reports
Track payments & outstanding dues
AI assistant in Hinglish
Your data, fully encrypted
Step-by-step guide for your platform
Download APK
Tap the download button and save the APK to your phone.
Allow Unknown Sources
Go to Settings → Security → enable 'Install from unknown sources' (one-time only).
Install & Open
Tap the downloaded file, install, and you're live in 30 seconds.
Create a bill on your phone, check it on your laptop, receive the payment notification on WhatsApp. Everything stays in sync instantly across all your devices.
Today
₹24,560
3 invoices sent
Ramesh Sarees
Invoice
₹4,200
paid
Gupta Kirana
Invoice
₹1,800
unpaid
Sharma Cloth
Invoice
₹18,560
paid
Synced
✓ All devices
Is the app free?
✕Android pe Play Store se download hoga?
✕Will my data be safe on the APK?
✕Windows app mein internet chahiye?
✕Kya ek account multiple devices pe use kar sakte hain?
✕Join 500+ merchants using Grahbook to run their billing on WhatsApp.
Also available at web.grahbook.com