We build invoicing apps around your products, customers, price lists and approval steps, so your team stops retyping spreadsheets and your invoices look like your brand. Developer-led, for Dubai, Sharjah, Abu Dhabi and the rest of the UAE.
A custom invoicing app is software built around your billing process: customer and product records, VAT-ready tax invoices, branded PDFs, payment status and sharing by WhatsApp or email. A quotation and invoice app from S R Tech Studio starts from AED 1,400 ($380 or ₹32,000), quoted fixed after a scoping call.
A custom invoicing app is a web application designed around your company's own billing rules instead of a generic accounting package.
Most UAE businesses start invoicing in Excel or Word. That works until the product list grows, two people edit the same file, or a customer asks for a copy of an invoice from last March. Ready-made accounting tools fix some of this, but they ask you to fit their menus, their invoice layout and their per-user pricing.
A custom invoicing app flips that. You decide the fields on the invoice, how prices and discounts calculate, who is allowed to see cost and margin, and how the PDF looks. The app is a normal website with a secure login, so it runs on a laptop, a tablet or a phone without installing anything.
We have built this kind of system before: a tax-invoice generator with separate logins and branded PDFs for a Sharjah engineering supplier, and a quotation and inventory app for a UAE sanitary-ware supplier. If you want the wider picture, read our overview of custom business app development in the UAE or the page on custom software development.
These are the building blocks we configure. Your quote lists exactly which ones are in scope.
| Feature | What it does | Problem it solves |
|---|---|---|
| Branded PDF invoices | Generates a PDF with your logo, address, TRN, bank details and terms, in English or bilingual English and Arabic. | Mismatched layouts and broken Excel formatting. |
| VAT-ready tax invoices | Calculates VAT per line or per invoice, with standard rate, zero-rated and exempt options, and shows the tax breakdown. | Manual VAT arithmetic and rounding mistakes. |
| Sequential numbering | Issues invoice numbers in order, such as INV-2026-0001, and keeps an audit log of changes. | Duplicate or missing invoice numbers. |
| Customer database | Stores contacts, billing and delivery addresses, TRN, credit terms and a full billing history. | Details scattered across phones and inboxes. |
| Product and price lists | Item codes, units, price tiers and discounts that staff pick from instead of typing. | Wrong prices and slow invoice entry. |
| Payment tracking | Statuses such as draft, issued, partially paid, paid and overdue, with outstanding balance per customer. | Chasing payments from memory. |
| Recurring invoices | Repeats retainer, rent or subscription invoices on a schedule you set, for review before sending. | Rebuilding the same invoice every month. |
| Multi-currency | Invoices in USD, EUR or GBP with the exchange rate stored on the invoice and the AED value shown. | Conversion errors on export orders. |
| WhatsApp and email sharing | Sends the PDF or a share link from the app, where the channel allows it. | Saving, attaching and forwarding by hand. |
| Role-based access | Owners see cost and margin, staff see selling prices only, accounts see payments. | Sensitive figures visible to everyone. |
| Reports and exports | Sales by customer, outstanding balances and VAT summaries as CSV or PDF. | Month-end copy and paste for your accountant. |
Features are configured to your process. Anything not listed in your written quote is not included.
Off-the-shelf software is the right answer for many companies. This table helps you decide whether yours is one of them.
| Factor | Off-the-shelf accounting software | Custom invoicing app |
|---|---|---|
| Fit to your workflow | You adapt to its menus and fields. | Screens and fields follow your steps. |
| Cost pattern | Recurring subscription, often priced per user or per module. | One-time build cost, with hosting and optional support on top. |
| Invoice layout | Templates with limited changes. | PDF designed to your exact brand and document rules. |
| Cost and margin privacy | Often all-or-nothing permissions. | Roles set field by field. |
| Special billing rules | Workarounds or higher tiers for tiers, units, delivery notes or progress billing. | Built in from the start. |
| Full accounting (ledger, bank feeds, payroll) | Included in the product. | Not included unless you scope it, or we connect to your accounting tool. |
| Data and ownership | Held on the vendor's platform under their terms. | Held in a database set up for you; hosting and ownership terms are written in your quote. |
| Speed to start | Quick to sign up. | Needs scoping and a build before first use. |
A custom app usually sits next to your accounting package, not instead of it. Many firms keep their accountant's tool for the ledger and use the app for fast, branded billing.
We build the fields and logic a UAE tax invoice normally needs. We do not give tax advice or promise compliance, so confirm your rules with your accountant.
UAE VAT is charged at 5% on most supplies, with zero-rated and exempt categories. A tax invoice normally shows the words Tax Invoice, your name and TRN, the customer details, a unique number, the date, a description of the goods or services, the taxable amount, the VAT amount and the total in AED. The Federal Tax Authority publishes the current requirements, so check its latest guidance before you finalise a template.
The UAE has also announced a national e-invoicing framework. The technical formats and dates are set by the authorities and may change, so we treat this as readiness, not compliance. In practice that means storing invoice data in structured fields, keeping clean customer and tax records and building the app so an e-invoicing connection can be added when your requirements are confirmed.
Choose your market to see prices in AED, USD or INR. Most invoicing projects start with the quotation and invoice package.
UAE (AED)
Branded quotes, tax invoices and payment tracking in one app.
Best for: Trading companies, contractors, B2B suppliers
Get this quoteA tool built around how your team actually works.
Best for: Internal tools, portals and workflow automation
Get this quoteUnited States (USD)
Branded quotes, tax invoices and payment tracking in one app.
Best for: Trading companies, contractors, B2B suppliers
Get this quoteA tool built around how your team actually works.
Best for: Internal tools, portals and workflow automation
Get this quoteIndia (INR)
Branded quotes, tax invoices and payment tracking in one app.
Best for: Trading companies, contractors, B2B suppliers
Get this quoteA tool built around how your team actually works.
Best for: Internal tools, portals and workflow automation
Get this quotePrices are starting points for a clearly scoped project and exclude domain, hosting, third-party licences and VAT or GST where applicable. You get a fixed written quote after a short scoping call.
These are illustrations of where custom billing rules pay off, not claims about particular clients.
High-volume orders, tiered price lists and credit limits per customer, with delivery notes converted into invoices.
Supplier cost kept private, margin visible to management, invoices in AED or a foreign currency.
Part numbers, specifications and customer PO references printed on every line.
Milestone and progress billing, retention and change orders that standard tools handle awkwardly.
Recurring retainers, time-based billing and itemised project scopes sent as clean PDFs.
Units such as metres, tons, bags and crates, with site-specific delivery details.
Dubai billing is fast, multi-currency and often tied to a quotation.
A trading firm in Deira, a consultancy in Business Bay or a logistics company in a free zone each bills differently, but they share a need: speed and a professional document. Typical Dubai requirements include quotation-to-invoice conversion, invoices in USD or EUR with the AED equivalent, customer PO references and bilingual headers.
We scope and demo Dubai projects remotely, by video call and screen share, using your real invoices and price lists. You test a working version on a staging site before it goes live. See our Dubai page for how we work with Dubai teams, or the UAE overview.
Sharjah's industrial and trading firms usually need long line lists, dynamic units and delivery notes.
Across the industrial areas and free zones, suppliers of building materials, electrical gear, fasteners and spare parts raise invoices with dozens of lines, split shipments and delivery orders. Generic tools slow the order desk down. A custom app can use quick search and autocomplete so staff build a long invoice fast, and it can turn one or several delivery orders into a single tax invoice.
We delivered a tax-invoice generator with separate logins and branded PDFs for a Sharjah engineering supplier, so we know the shape of this work. Read the Sharjah page for local detail.
Abu Dhabi firms often bill larger organisations that expect structured, consistent paperwork.
Contractors, facilities firms, technical suppliers and consultancies in Abu Dhabi often invoice corporate and government-linked buyers. Those buyers tend to want clear purchase order references, itemised scopes, approved formats and reliable payment tracking. A custom app lets you hold all of that in one place and produce the same document every time.
We work with Abu Dhabi companies remotely, the same way as in Dubai and Sharjah. See the Abu Dhabi page for the wider service picture.
The people who scope your app are the people who write it.
Share a current invoice, your product list format and the number of users. That is enough to start.
We review the invoice fields, VAT cases, price tiers, approvals and who should see what.
You get a scope and price in writing. Hosting, support and schedule details are stated in the quote.
You test a working version on a staging site with your real data and give feedback on screens and PDFs.
We deploy the app, set up logins and run a short walkthrough. Ongoing support is optional and agreed in advance.
A quotation and invoice app starts from AED 1,400 in the UAE, $380 in the US and ₹32,000 in India. A wider custom web app starts from AED 2,000. The final figure depends on users, document types, price rules and integrations, and you receive it as a fixed written quote after a scoping call. See pricing.
An invoicing app focuses on creating, sending and tracking invoices in the format you need. Accounting software also handles the general ledger, bank reconciliation and payroll. Many UAE firms use both: the app for fast branded billing, and an accounting tool for the books. We can scope an export so your accountant receives clean data.
It can include the fields a UAE tax invoice normally needs, such as your TRN, customer details, a sequential number, the VAT amount and the AED total, with standard, zero-rated and exempt options. We do not give tax advice or promise compliance, so confirm the template with your accountant and the current Federal Tax Authority guidance.
We can build for readiness: structured invoice data, clean tax fields and a design that lets an e-invoicing connection be added later. The UAE's formats and dates are set by the authorities and can change, so we do not claim compliance today. Confirm the current requirements with your accountant before relying on any tool.
Yes. Multi-currency invoicing stores the foreign currency, the exchange rate used and the AED equivalent on each invoice, so export and import sales stay traceable. You decide whether rates are entered by hand or set by your finance team.
Where the channel allows it, yes. Staff can share the PDF or a link by WhatsApp or email straight from the app. Automatic WhatsApp messaging depends on the provider's rules and costs, which we explain during scoping.
Yes. Our quotation app and invoicing app can share one database, so an accepted quote converts into a draft invoice with items, prices and terms carried over. Staff review it, then issue it.
Yes. Role-based access hides cost and margin from sales and dispatch staff while owners and managers can see them. Permissions are set per role and per field, so you can also limit who may delete, cancel or edit issued invoices.
Send us a sample invoice, a short description of your products and customers and the number of users, through the contact page or WhatsApp. We review it, hold a scoping call and send a fixed written quote.
Send a sample invoice and tell us how your team bills. You get a clear written scope and price, and honest advice if off-the-shelf software would serve you better.
