Browser application with real subscriptions
Masterproof
Built from an empty folder into a paid browser app, with accounts, credit packs and an annual plan.
11checks on an audio file, run entirely in the browser
Built as a Flagship
What changed
Before
Nothing. This one started from an empty folder, which makes it the honest answer to whether I can build something that does not exist yet.
Now
- Eleven technical checks on an audio file in about thirty seconds
- All analysis inside the browser, so no file is ever uploaded anywhere
- Plain answers naming what is wrong and how to fix it
- A free tier, a $9 credit pack and a $79 a year unlimited plan
- Accounts, self-serve billing, upgrades and cancellation
Underneath it
The architecture, named plainly, for anyone who wants to check it.
- WebAssembly doing the signal processing on the client, which is what makes the privacy claim true rather than marketing
- Stripe subscriptions and one-time credit packs behind the same account system
- Supabase for accounts, entitlements and check history
- Resend for receipts, plan changes and reports
- A free tier deliberately wired to feed the Born Creative Audio email list
How it was built
It started at zero
No existing site to migrate, no audience on the domain, no template to fill in. Every part of this one, from the audio analysis to the billing portal, was built from an empty folder.
The audio never leaves the device
Analysis runs in the browser through WebAssembly. Nothing is uploaded, transmitted or stored. That is a privacy claim the architecture actually backs, which is the only reason the site is willing to print it.
Real subscriptions, not a donate button
A free tier, a one-time credit pack and an annual plan, with accounts, billing management, upgrades, downgrades and cancellation. Metered billing is where most small products quietly fall apart, so it is worth saying that this one does not.
Proof the offer is not just booking sites
If a build needs real application logic, client-side processing, subscriptions and account management, that has been done, and you can open it in a browser tab right now.
Yours starts with a thirty-minute call
A standard codebase in your accounts, with a perpetual license to everything delivered. Nothing is locked to me.
Book a call