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$
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I will build a custom invoice generator and pricing calculator business app
Zack
About this gig
A real app, not a spreadsheet. I will build you a custom business app that runs your whole business in ONE offline HTML file.
This all-in-one business app combines a pricing calculator, cost calculator and profit calculator, a live dashboard (revenue, costs, net profit and break-even), an invoice generator and a quote generator with PDF export, plus full inventory and stock management and expense and sales tracking.
Why you will love it: it works 100% offline in any browser (Windows, Mac, iPhone, Android), supports multi-currency and multi-language, and needs no subscription, so you buy once and own it forever. It is delivered as a single .html file with a quick-start PDF guide and the full source code.
Perfect for shops, makers, food and service businesses that want to price right, invoice fast and stop guessing their margins.
Message me before ordering with your business type and I will tailor the app perfectly for you.
Respect third-party rights
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Get to know Zack
Zack
Custom Web Apps, Quote Calculators, Invoice and Pricing Tools
- FromFrance
- Member sinceFeb 2021
- Last delivery4 years
Languages
English, French, Arabic, Italian, Spanish
I build custom offline business apps and web tools that help small businesses price right, invoice faster and stop guessing their margins. From pricing and profit calculators to invoice and quote generators, inventory dashboards and simple automations, I turn your spreadsheet chaos into one clean app you own forever. Delivered ready to use, in a single file, with no subscription. Tell me about your business and let's build the tool you need.
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Other Website Development Services I Offer
FAQ
Do I own the app forever?
Yes. It is a one-time purchase with no subscription, and every package includes the full source code, so you own it forever.
What do you need from me to start?
Just your business type plus your products and their costs. I will guide you through everything step by step.
Does it work offline and on mobile?
Yes. The app runs 100% offline in any browser on Windows, Mac, iPhone and Android. No internet or install needed.
Can you tailor it to my exact business?
Absolutely. Bakery, salon, food truck, agency and more - I build the app around your products, costs and workflow.
