Handoff Check

Verify delivered software
before approving payment.

Independent proof that the software you received actually works.

Not another general uptime or synthetic-monitoring check. A real headless browser completes the actual workflow you tell it to test, waits a real delay, then confirms your data genuinely survived — the exact thing a five-minute look at a delivered app can't catch.

"I paid for this app. How do I know it isn't fake, fragile, or losing my data?"

Download for Windows — free to run See pricing See a sample report

Runs locally on your machine. Private, internal, and loopback addresses are refused — it only ever checks apps you point it at.

What it actually checks

  1. Launch the delivered application.
  2. Complete a real user workflow — the one you tell it to test.
  3. Create or change a test record through it.
  4. The run ends here — this is the moment a five-minute demo look stops too.
    5. — a real delay happens: a free-tier host sleeping and waking, a redeploy, or you just checking back later —
  5. Confirm the saved data still exists, from a completely fresh page load.
  6. Get screenshots, logs, and a plain pass/fail report — real evidence, not another AI opinion.

Built for people receiving software, not QA teams

If you already run Checkly, BrowserStack, or QA Wolf, this isn't replacing that. This is for the moment right after you've paid for something and have no way to know if it's real.

Buyers of AI-app-builder output
Freelancer & agency clients
No-code app buyers
Offshore-contractor clients
Marketplace template buyers
Anyone handed a "finished" internal tool

Pricing

Critical Workflow Check
$49
One promised requirement, one workflow, delayed persistence verification, screenshots, logs, and a mapped evidence report. Assisted setup — identifying the right fields to test is part of what you're paying for.

Buy — $49

Delivery Acceptance Review
$199
Multiple promised requirements, test setup completed by Endstorm, deeper evidence, reviewed findings, and a report suitable for requesting revisions or making a payment decision.

Buy — $199

Running the tool itself is free. Buy directly above, or download and use the same payment link built into the app.

If it fails

A failed test isn't a dead end — it's the start of the actual fix. If your delivered app has real, documented defects, Endstorm can repair and reverify them for a fixed price. If the build is too broken to patch reliably, Endstorm can rebuild the workflow from scratch through its commercial software factory instead of trying to save something structurally bad.

Download

Windows only right now. Downloads and runs locally — the first launch installs a real browser engine automatically (one-time, a couple of minutes), then it's ready.

Download for Windows (.zip)

Unzip, run "Handoff Check.exe" — no install wizard, nothing written outside its own folder and your browser-engine cache. First launch also creates a plain-text payment_link.txt next to it — paste your Stripe Payment Link in and restart to enable checkout.