Build Directory
JustFixMe
A one-shortcut AI typo fixer, priced two ways so the AI bill does not eat the product.
Fix typos anywhere, instantly. The interesting part is the pricing: pay monthly and he covers the AI, or pay once and bring your own key.
- Format
- AI browser extension, Chrome, with a Mac app coming
- Pricing
- $9/mo with AI included, or $29 one-time bring-your-own-key
- Trial
- 7-day free trial
- For
- Heavy browser typists
Who it’s for
People who type all day in the browser and want fast, system-wide typo fixing without pasting into a chatbot.
Where the money comes from
JustFixMe is a browser extension that fixes spelling and typos in any text field with a keyboard shortcut, across Gmail, Notion, Slack, GitHub, and anywhere else you type. The promise is "fix typos anywhere, instantly." It runs a 7-day free trial, and then it charges in two different ways, which is the part worth studying.
How it makes money
The obvious layer is a $9 a month subscription with the AI included. The interesting layer is the alternative: a $29 one-time purchase where you bring your own AI key. That second option exists because of the one problem every AI product has and older software did not. Every single fix calls a model, and every call costs the founder money. On a flat $9 a month plan, a heavy user can quietly cost more than they pay. Selling a one-time license and pushing the API cost onto the buyer's own key removes that risk entirely, at the price of a smaller, one-off payment.
The honest catch is that a typo fixer is a nice-to-have competing with free built-in autocorrect and browser spellcheck, so the hard part is not the pricing, it is convincing enough people the shortcut is worth paying for at all. But as a piece of pricing, it is a clean, real example of the choice every AI builder faces. See the rest of what its builder is shipping.
What a builder can learn
Every AI product has a problem cheap SaaS never did: each use costs the founder money. JustFixMe shows the two honest answers side by side. Charge a subscription and eat the API bill, or sell a one-time license and make the buyer bring their own key. The bring-your-own-key option is how a solo dev sells an AI tool without a heavy user quietly turning into a loss.
Read: How to Price an AI Product When You Have Real Usage CostsIs this your product?
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