BillCalc helps plumbers, electricians, contractors, shop owners, and small businesses write text and math together, calculate totals instantly, and turn notes into professional quotations, invoices, PDFs, and WhatsApp-ready bill images on Android.
Every interaction is designed to save you time when you're standing in front of a client.
Write text descriptions and math on the same line. `Labour 3 * 800` instantly calculates to `2,400`. Use variables like `$1` or `Ans`, and type `ST` for an automatic subtotal.
Swipe a row left or right to temporarily exclude it from the grand total. Long-press for a quick context menu to Copy, Delete, or Select All.
Choose between Plain, Ruled, or Notebook backgrounds. The app fully respects your system's Dark Mode, giving you perfect contrast day or night.
Never lose your data. Securely backup your documents to your private Google Drive folder. Switch devices seamlessly and restore your entire history in seconds.
See how professionals across different industries use BillCalc to speed up their daily workflows.
Estimate materials and labour instantly on site.
Itemised billing for events and tent houses.
Calculate per-plate costs with advance deductions.
Manage heavy material quantities and daily wages.
Quote projects, revisions, and tax seamlessly.
Rapid counter calculations for multiple items.
Price out repair jobs and spare parts quickly.
Calculate stitching and material charges clearly.
Break down multi-day shoots and album deliverables.
Switch seamlessly between your device's native keyboard for long text, and our custom engineering keyboard for rapid math.
Use keyboard arrow keys to jump exactly where you need to edit an expression. No more fat-fingering text selection.
Master the app with one-by-one sequential tips. Learn about power features like `ST` (Subtotal), `Ans`, and swipe gestures as you go.
Choose between **Classic** and **Full** layouts. Switch seamlessly between your device's native keyboard and our custom engineering pad.
Set up your business profile once. BillCalc automatically formats your notes into beautiful PDFs and Images ready for WhatsApp.
Professional layouts with your **Logo, GST details**, and Bank accounts. Perfect for official emails.
Share your document instantly as a high-quality image or PDF via WhatsApp or any messaging app.
Build trust with clean, professional invoices that include your business name and contact details.
These are the core questions users search when comparing calculators, quotation apps, and invoice makers on Google Play.
BillCalc is an offline Android notepad calculator that lets you write text and math together, calculate totals instantly, and turn notes into professional quotations, invoices, PDFs, and bill images.
BillCalc is built for plumbers, electricians, contractors, carpenters, traders, shop owners, and small businesses that need fast on-site calculation and simple professional billing.
Yes. Core calculations, document history, quotations, invoices, PDF export, and image sharing work offline. Google Drive backup is optional.
You can install BillCalc on Android from Google Play. Search for BillCalc, notepad calculator, quotation app, invoice maker, or offline bill maker, then open the official listing by Dipen Parmar.
Install the offline notepad calculator and invoice maker from Google Play. Ideal for plumbers, electricians, contractors, shop owners, and small businesses.
Requires Android 8.0 (Oreo) or later