When we started Flexprice, we didn’t want to create just another billing SaaS. We knew the problem wasn’t just about invoicing; it was about giving companies the flexibility to monetize however they want. Billing isn’t just finance—it’s core to growth, pricing strategy, and user experience.

That’s why we built Flexprice: an open, programmable, and developer-first approach to metering and billing.

Open Architecture

Traditional billing platforms claim to be the source of financial truth, but they’re walled gardens. They dictate how you integrate, how you structure pricing, and in some cases, even who you process payments with (Stripe Billing, anyone?). This lack of flexibility forces companies into brittle setups that don’t scale with their evolving needs.

Billing sits at the core of every B2B company, and no two companies have the same tech stack. Whether you use Stripe, Razorpay, Paddle, or an internal ledger, you should have the freedom to define how billing fits into your workflow—not the other way around.

That’s why Flexprice is open-source. You can integrate it with your existing tools, extend it as needed, and avoid vendor lock-in. We’re making monetization infrastructure as composable as modern software should be.

Developers First

Billing has always been an engineering nightmare. It’s high-stakes, high-complexity, and deeply intertwined with finance, yet most tools are built for accountants—not engineers.

Think about it: Every other critical system—authentication, analytics, payments—has developer-friendly options. Why not billing?

Flexprice is built API-first, designed for developers. Want usage-based billing? Dynamic metering? Hybrid pricing? You can configure it however you need. No more battling closed dashboards or hacking together billing logic with spreadsheets.

Plus, we’re fully transparent. Found a bug? Report it on GitHub. Need a new feature? Contribute or request it. Got feedback? Join our Slack. We’re building this in the open, with and for developers.

Fair Pricing

Most billing SaaS companies operate like rent-seeking middlemen—taking a percentage of your hard-earned revenue. The idea that a billing provider deserves a cut of your business just for processing invoices is ridiculous.

At our previous companies, we built in-house billing systems just to avoid these predatory fees. But maintaining them was a massive drain on engineering resources.

Flexprice is different. It’s open-source and forever free to self-host. For teams that don’t want to manage infrastructure, we’ll offer a cloud version at a fair price—without charging a percentage of revenue.