Design and diagrams decision

UI SFX

Do not rebuild: the project is open-source (MIT) and the repository is available, so a technical user should self-host or import it rather than reimplementing the product.

Visit website

You pay

Not priced

No pricing page we fetched carried a figure, so there is nothing to compare against. The build side is still real.

You’d pay instead

$20one-off6 h to build

$0/mo1 h/mo upkeep

No published price to break even against.

Open-source builds that already do this

Every project below is open source and already does this job today. Fork one, self-host it, or take the parts you need - the build prompt further down assumes an empty file, and this is the shortcut past that. Licences differ; check the one on each card before you ship. All UI SFX alternatives, with the arithmetic →

romainsimon/uisfxthe vendor’s own source391MITUI Sound Effects for your interfacesOpen on GitHub

What a replacement has to do

Serve the sound asset files and a tiny JS player that maps semantic cues (hover, press, success, error, etc.) to MP3/Ogg files and exposes ui.play('cue') and ui.stop('loop').

What it still won’t have

Hosted demo site and sponsor-managed landing pages
Sponsor-funded continuous sound updates (if you don't sync with upstream)
Any curated sponsorship placement or discovery provided on the official site

What remains hard

Content rightsCC0 audio license
Execution qualityZero dependencies

Read the build prompt

First-year cost

No published price

UI SFX does not publish a price we could read, so there is nothing to compare against. What building costs is below.

Money you would actually spend

Keep paying

—

Subscription price × seats × 12

Build it

—

AI build —APIs + hosting —

Time you would spend

—

What you would spend

Your monthly price$/moAI to build it$ onceAPIs + hosting$/mo

What we assumed

Initial buildhrsMonthly upkeephrsYour rate$/hr

The verdict above measures whether you could build it. This one is only about money.

Runnable build prompt

Not run yet

Build a self-hostable UI sound library using Node.js + static hosting (Vercel/Netlify) and a tiny client JS module. Scope in: import the repository of 936 MP3/Ogg files, generate a JSON manifest mapping 78 semantic cues × 12 feels, implement a createUISFX({pack}) API that preloads sounds, exposes ui.play('cue') and ui.stop('loop'), and a demo page with feel selector and cue browser. Out of scope: authoring new sounds or training models. Include error handling for missing assets, graceful fallback when audio is blocked, automated manifest tests, and a small CI step that validates all files referenced in the manifest exist.

How we checked2 sources · 3/3 runs agreed · evidence score 99

How the score was reached

Self-host verdict base92
An open-source build was found+5
2 cited sources+1
3/3 assessment runs agreed+4
Hard moats found in the evidence-3
Evidence score99

The base comes from the verdict. Everything under it is a check that either happened or did not, and each one is a fact frozen in this record rather than a judgement made at render time - so the same evidence always produces the same number.

How scoring works →

Cited sources · 2

Every page the run actually retrieved.

official productUI SFX — official site
open sourceUISFX repository

Integrity checks

What held up, and what did not.

✓ 3 independent runs, one answer✓ Citations limited to fetched pages! 2 moats quoted from the page