Business software
Custom invoicing software for your business
In short
Weras Labs is a software company that builds invoicing software covering the whole cycle in one place, from quote to invoice to payment to reporting. E-invoicing integration, recurring billing, payment tracking and a customer portal are part of the scope. After a discovery call you get a written quote and talk directly to the developer.
Sending an invoice shouldn't take longer than the work behind it. Weras Labs builds invoicing software that covers the whole cycle, from quote to invoice to payment to reporting, in one place. Because it talks to your orders, stock and customer records, your team stops copying data between tools.
- Free intro call
- Written proposal
- You own the code and accounts
Who it's for
Subscription businesses
Monthly or yearly fees go out on time as recurring invoices, with no manual work.
Quote-led sales teams
An accepted quote becomes an invoice in one step, so nobody retypes the same details.
Teams chasing payments
Due and overdue invoices sit in one list, and payment links help clients pay faster.
Businesses with foreign clients
Invoice in several currencies and still see clear totals in your reports.
Who needs custom invoicing software?
Standard invoice generators are fine for simple needs. A custom build usually pays off when:
- You bill the same customers every month for subscriptions or retainers.
- Invoices should be created automatically from orders, stock or project data.
- Pricing varies by customer, contract or usage.
- Customers or resellers want a portal to view and download their invoices.
- You invoice on behalf of several companies or branches.
Instead of bending those rules to fit a generic tool, we build the rules into the software.
E-invoicing integration
Many countries now require or encourage electronic invoices sent through approved networks or service providers. We don't act as an e-invoicing provider ourselves; we connect your invoicing software to the provider you already use, or help you choose one, through its API.
You create invoices in your own system, while sending, status tracking and archiving run automatically through the provider. Compliance stays with a specialist, and you keep control of your workflow. For businesses that trade with Turkey, we have hands-on experience integrating with the local e-invoice and e-archive providers authorised by the Turkish Revenue Administration.
Typical features
The modules we build most often:
- Customer records with tax details and addresses
- Quotes that turn into invoices with one click once approved
- Recurring billing for subscriptions and retainers, sent automatically
- Multi-currency invoices with exchange-rate support
- Payment tracking and automatic reminders for overdue invoices
- Payment links so customers can pay by card
- VAT, withholding and discount calculations
- Revenue, collections and per-customer reports
Price, timeline and tech stack
Cost depends on which e-invoicing provider we integrate with, your recurring billing rules, the payment gateway and any stock or accounting integrations, plus reporting needs. We send a free quote tailored to you and suggest starting with the most important piece so the project fits your budget.
Core invoicing and payment tracking usually take 4–6 weeks. Adding e-invoicing, subscription management and a customer portal typically extends that to 6–10 weeks. We build with Next.js, React, TypeScript and Node.js, store data securely in Firebase or a relational database, and deploy on reliable infrastructure such as Vercel.
Why Weras Labs
You work with a small senior team led by founder Habip Dayan and talk directly to the developer building your system. We've built payment and billing flows for our own software products, so we know every amount has to be right to the cent. We're based in Turkey and work with clients internationally.
What's included
What a typical project delivers. We always narrow or widen the scope together to fit what you need.
E-invoicing integration
Automatic sending and status tracking through your e-invoicing provider's API.
Recurring billing
Subscription and monthly invoices created and sent on schedule.
Quote to invoice
Turn an approved quote into an invoice in one click, with no retyping.
Payment tracking
Paid, pending and overdue invoices, with automatic reminder emails.
Payment links
Customers pay by card straight from the invoice.
Multi-currency
Exchange-rate support and templates suited to international customers.
Customer portal
A place for customers to view and download their own invoices.
Reports
Monthly revenue, collection rate and per-customer turnover.
How we work
- 1
Discovery call
We go through your billing rules, e-invoicing provider and current tools.
- 2
Scope and quote
Modules, integrations, timeline and a fixed price, in writing.
- 3
Build and test
We validate the whole flow with test invoices in the provider's sandbox first.
- 4
Go live
We switch to production and check the first real invoices together.
- 5
Ongoing support
We keep the software current as regulations or provider APIs change.
Frequently asked questions
Can your invoicing software send e-invoices?
Yes, through an approved e-invoicing provider's API. We aren't a provider ourselves; we connect your software to the one you use or help you choose one. Sending, status tracking and PDF retrieval happen automatically.
Why build custom invoicing software instead of using an invoice generator?
If invoices should come automatically from orders, stock or subscriptions, if pricing varies per customer, or if you need a customer portal, custom software saves real time. For simple needs we'll happily point you to an existing tool.
How much does custom invoicing software cost?
It depends on the e-invoicing integration, recurring billing, payment gateway and other integrations. After a short call we send a free, fixed-price quote.
Can it integrate with our inventory and accounting software?
Yes. We build integrations so issuing an invoice deducts stock and the entries flow into your accounting software. The same information is entered only once.
Can recurring invoices be sent automatically?
Yes. You set a billing cycle per customer or contract; when it's due, the invoice is created, sent and added to payment tracking. A card payment link can be included as well.
Do you support invoices in multiple currencies?
Yes. We add multi-currency support with exchange rates and prepare invoice templates suited to customers in different countries.
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Let's talk about your project
Describe what you need in a few sentences. We'll pin down the scope together and send a free quote within one business day. You talk directly to the developer.