Independent software studio

Most software never pays for itself.

It gets bought, rolled out, and then quietly costs more than it returns. We build the other kind. Every product here starts with a problem you can say in one sentence: a file that won't cross from a Mac to a Windows box, a draft that reads like a chatbot wrote it, a language you can read but freeze up speaking. Then the question is whether fixing it is worth more than it costs to run. Some of that uses AI. Plenty of it doesn't.

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One problem, in one sentence.

If it takes a paragraph to explain what's wrong, we don't understand it yet. Every product here started as somebody's one-line complaint.

Return, not activity.

Pointing AI at a job is easy and it looks like progress. What came back is the harder question, and it's the one that decides what gets built. If a tool doesn't save more than it costs to run, there's no reason for it to exist.

AI where it earns it.

Liquid Relay never calls a model. Ezsay and Language Match do, because nothing else does that job. Models are metered and they aren't cheap, so they go where they pay for themselves. The rest is ordinary software.

Shipping now.

What you can use today. Anything still being built stays on byzyb.ai until it's ready.

SaaS · Live

Ezsay

Find the AI tell before your reader does.

AI writing has a tell, a flatness you can spot even when you can't name it. Readers notice it, and it's quietly costing people grades, credibility and deals. Ezsay scans your draft across six dimensions - detectability, AI artifacts, quality, plagiarism, citations and tone - and flags each one with a plain-language reason instead of a score you can't act on. It isn't there to help you hide the machine; it shows you the habits that give it away, so the next draft starts cleaner. It also checks that your citations are real and converts them between eight academic styles, from APA to Bluebook.

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iOS App · Live

Language Match

Practise on real people, with a coach inside the chat.

Flashcards teach you words. They don't teach you the nerve to use them on a stranger, which is where most people stall after a year of apps. Language Match pairs you with real people to talk to, matched the way a dating app does it, then puts a coach inside the conversation. Swipe right on any message for an instant translation, left for grammar fixes and better phrasing, so you can keep the conversation going instead of leaving it to look something up. It tracks the vocabulary you actually use, adapts to your level, and reads messages back to you so you hear the words before you have to say them.

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Desktop App · Live

Liquid Relay

Move files between Mac and Windows without the network noticing.

Two machines on the same desk, and moving a file between them still means a cloud upload, a cable, or a shared drive somebody has to administer. Film editors bouncing a cut between systems and developers compiling on one box and testing on another hit this constantly, and so does anyone whose corporate network blocks the obvious route. Liquid Relay moves files, clipboard content and screenshots directly between Mac and Windows machines. No cables, no cloud upload, no NAS, nothing for the network to catch. Copy on one machine, paste on the other.

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Who makes this.

PainKiller Labs is the company behind all three products. It signs the terms, answers the support mail and carries the refund promise, which is the part that counts on the day something goes wrong. One person runs it, and still writes the code.

About PainKiller Labs→