Is Ozydo really free?

Yes. Ozydo's free plan lets you create 5 invoices and 3 estimates every month at zero cost, forever. No credit card is required. The Pro plan (₹199/month) removes the monthly limits and adds unlimited invoices, premium PDF templates, GSTR-1 export, and priority support.

How do I create a GST invoice for free in India?

Sign up free at ozydo.com, add your GSTIN in settings, create a new invoice, add your client and line items, choose the GST rate (5%, 12%, 18%, or 28%), and tap Send. The PDF invoice is generated instantly with CGST/SGST or IGST calculated automatically. Share via WhatsApp or email.

What is the mandatory format for a GST invoice in India?

A valid GST tax invoice must include: supplier name, address, and GSTIN; unique sequential invoice number; invoice date; recipient name, address, and GSTIN (for B2B); HSN/SAC code; description of goods or services; taxable value; GST rate; CGST and SGST or IGST amounts separately; place of supply; and total value in words and figures.

Can I send a GST invoice on WhatsApp?

Yes. Ozydo generates a professional GST invoice PDF and lets you share it directly on WhatsApp with one tap — without downloading and re-uploading the file. This is the fastest way to send invoices to clients in India.

What is the difference between CGST, SGST, and IGST?

CGST (Central GST) and SGST (State GST) apply to intra-state sales — within the same state. They are each half of the total GST rate (e.g., 18% GST = 9% CGST + 9% SGST). IGST (Integrated GST) applies to inter-state sales — between two different states — and equals the full rate.

Do freelancers need to charge GST on invoices?

Only if your annual service income exceeds ₹20 lakh (₹10 lakh in some North-East states). Below this threshold, you do not need to register for GST and can invoice without charging GST. Above the threshold, GST registration is mandatory and you must charge 18% GST on most services.

What is the best free invoice app for small businesses in India?

Ozydo is designed specifically for Indian small businesses — it creates GST-compliant invoices in 30 seconds, shares them via WhatsApp, adds a UPI QR code for instant payment, and supports Hindi language. The free plan includes 5 invoices/month with no credit card required.

How do I collect payment via UPI on an invoice?

Add your UPI ID (e.g., yourname@okaxis) in your Ozydo business settings. Every invoice you create will automatically include a UPI QR code and direct payment links for GPay, PhonePe, and Paytm. Clients scan the QR or tap the link to pay instantly.

Tools6 min read·18 May 2026

Best Mobile Invoice App India 2026 — Free GST Billing on Your Phone

The best mobile invoice app for India in 2026 should be free, work offline, generate GST-compliant invoices in seconds, and let you share on WhatsApp. Here's how the top apps compare — and why Ozydo wins for small businesses.

Whether you're an electrician finishing a job on a client's rooftop, a freelance designer wrapping up a project meeting, or a small shop owner who just completed a sale — the ability to create and send a professional GST invoice from your phone on the spot is a genuine business superpower. You get paid faster, look more professional, and keep your records clean without waiting until you're back at a desk.

In 2026, there are dozens of mobile invoice apps available in India. But most either cost money for the features you actually need, are bloated with accounting features you'll never use, or simply don't work well on a phone. This guide compares the best mobile billing apps for India and helps you find the right one for your business.

What Makes a Great Mobile Invoice App for India?

GST-compliant — auto-calculates CGST, SGST, and IGST based on supplier and client states
Truly free — not a 'free trial' or 'free for 5 invoices'; fully free with no hidden charges
Works offline — create invoices even without internet connection on a job site
Fast — create a complete invoice in under 60 seconds on a phone
WhatsApp sharing — send the PDF invoice directly on WhatsApp (not just email)
PDF download — professional PDF that looks great on any device
UPI payment link — add your UPI ID so clients can pay instantly from the invoice
Multi-device — works on both Android and iPhone without separate app versions
No login wall — don't lock basic features behind registration

Best Mobile Invoice Apps India 2026 — Comparison

App	Free Plan	GST Auto-Calc	WhatsApp Share	Offline	Best For
Ozydo	Fully free	Yes — CGST/SGST/IGST	Yes — 1 tap	Yes (PWA)	Freelancers, contractors, small businesses
Zoho Invoice	Free (5 clients)	Yes	Manual PDF share	No	Growing businesses needing CRM integration
Invoice Maker — Vyapar	Limited free	Yes	Yes	Yes	Small retailers, traders
ClearTax GST	Partly free	Yes	Limited	No	Businesses focused on GST filing
Simple Invoice — Google Play	Ads-supported	Basic	Manual	Partially	Very occasional invoicing

Why Ozydo Stands Out

Most invoice apps in India are either expensive, ad-supported, or limit free use to a handful of invoices. Ozydo is 100% free with no invoice limits, auto-GST calculation, offline support as a PWA (Progressive Web App), and direct WhatsApp sharing — all without requiring an app store download.

How to Use Ozydo as a Mobile Invoice App (No App Download Needed)

1Open Ozydo.com in your phone's browser (Chrome on Android, Safari on iPhone).
2Tap the 'Share' or menu icon in your browser and select 'Add to Home Screen'.
3Ozydo is now installed as an app icon on your phone — no Play Store or App Store needed.
4Open it like any app. It works offline too — data is stored on your device.
5Tap 'New Invoice', add client and item details, pick the GST rate.
6CGST + SGST (or IGST) is auto-calculated. Add your UPI ID for instant payment.
7Tap Share → WhatsApp to send the PDF invoice to your client instantly.

Invoice App for Specific Professions in India

Different businesses have different invoicing needs. Here's how Ozydo serves each use case from a mobile phone:

Electricians & Plumbers — create invoices on the job site, add materials and labour separately, include both HSN (goods) and SAC (services) codes on the same invoice.
Freelancers (design, writing, development) — bill clients for projects and milestones with SAC codes, 18% GST, and professional PDF invoices.
Contractors & Builders — generate contractor invoices with work completion descriptions, payment terms, and GST at 12% or 18% for construction services.
Shop Owners & Traders — create quick retail invoices with HSN codes and multiple GST rates for different products on the same bill.
Consultants & Coaches — bill for consulting sessions, workshops, or retainer agreements with proper service descriptions and GST.
Landlords — generate monthly rent invoices with GST for commercial tenants.

Mobile Invoice App Features You Actually Need

Feature	Why It Matters
Auto GST calculation	Eliminates manual errors on CGST/SGST split
WhatsApp invoice sharing	90%+ of Indian clients prefer WhatsApp over email
UPI payment link on invoice	Get paid instantly — clients tap and pay from the invoice
PDF download	Professional format for records and audit trail
Offline mode	Work on job sites, travel, or poor connectivity areas
Multi-client storage	Save client details so you don't re-enter every time
Invoice numbering	Auto-sequential numbering for GST filing compliance
Business logo on invoice	Looks professional; builds brand trust with clients

Invoice Banane Ka App — Ozydo in Simple Terms

If you've been searching for 'invoice banane ka app' or 'billing app free India', Ozydo is the answer. It's a free bill making app that works on any Android or iPhone without a download. You create a GST invoice in under a minute, download it as a PDF, and send it directly on WhatsApp to your client. It handles all the GST maths — CGST, SGST, IGST — automatically. Your business name and logo appear on every invoice. It's everything a small business owner needs to get paid professionally.

Try India's Simplest Free Mobile Invoice App

No Play Store download. No credit card. No subscription. Open Ozydo.com on your phone, add it to your home screen, and create your first GST invoice in under 60 seconds.

Create Free Invoice Now →

Frequently Asked Questions

Which is the best free invoice app for Android in India?

Ozydo is the best free invoice app for Android in India in 2026. It works directly in your Android browser (no Play Store download needed), auto-calculates CGST and SGST, shares invoices on WhatsApp in one tap, and supports offline use. It's completely free with no invoice limits.

Is there a free GST billing app for mobile in India?

Yes — Ozydo is a completely free GST billing app that works on any phone. It auto-calculates CGST, SGST, and IGST, generates professional PDF invoices with your logo, and lets you share on WhatsApp. Open Ozydo.com on your phone and add it to your home screen like an app.

Can I create an invoice on my phone without internet?

Yes. Ozydo is a Progressive Web App (PWA) that works offline. After you first visit Ozydo.com and add it to your home screen, you can create and save invoices even without an internet connection. Your data is stored locally on your device.

What is invoice banane ka app in Hindi?

Invoice banane ka app (invoice making app) jo India mein free aur best hai woh Ozydo hai. Phone ke browser mein Ozydo.com open karein, home screen pe add karein, aur 30 second mein GST invoice banayein. WhatsApp par directly client ko bhejein — bilkul free.

📚 Related Guides

ToolsProfessional Invoice Template India — Free Download 2026 GSTContractor Invoice Template India — Labour & Construction Invoice Format 2026 GSTHow to Make a GST Invoice in India — Step-by-Step Free Guide 2026

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Written by the Ozydo Team

Ozydo is India's simplest free GST invoice app for small businesses and freelancers. We write practical guides on invoicing, GST, and business finance to help you get paid faster.