Whimsyware independent software, one product at a time

For eBay & Amazon sellers

Untangle the research,
so selling stays simple.

A browser extension that reads seller and buyer history for you, filters the listings you don't want to see, and gives you a plain read on risk — no verdicts, just the facts you'd have dug up yourself.

Not live yet — leave your email and we'll let you know the day it is.

No spam — one email, when it's actually ready.

What it untangles

Four things that used to mean ten browser tabs.

Seller research, on the page

Hover a search result or open a seller's page and get feedback history, tenure, and a plain-language risk read — without leaving the listing.

Buyer history, before you ship

Look up a buyer's feedback pattern before you commit to a sale. Descriptive, not a verdict — you decide what it means.

Hide what you don't want to see

Keyword filters for search results on both eBay and Amazon — separate lists per platform, so hiding one doesn't hide the other.

A second look at review patterns

On Amazon, a structural scan flags star-distribution skew, verified-purchase ratio, and unusual review timing — context, not an accusation.

How it works

Install it, then forget it's there until you need it.

01

Add it to your browser

Untangle sits quietly on eBay and Amazon. It only does anything when you ask it to.

02

Hover, click, or scan

Research a seller, look up a buyer, or filter a search — each is one click from where you already are.

03

Get a plain read

Facts and a risk read, not a yes/no verdict. You're still the one making the call.

Pricing

Pick a tier. Switch or cancel whenever — nothing's hidden.

Free $0 2 lookups / day
  • Hide & filter listings
  • Capped seller research
  • Buyer history (quick read)
  • Full buyer history
7-Day Trial $0 8 / day, one-time
  • Everything in Pro Seller
  • Rate-limited instead of unlimited
  • No card required
Pro Seller $16.99/mo billed annually or semi-annually
  • Everything in Pro Buyer
  • Full buyer history & risk read (eBay)
FeatureFreeTrialPro BuyerPro Seller
Daily analysis cap2/day8/day, 7 daysUnlimitedUnlimited
eBay & Amazon supportYesYesYesYes
Hide & filter listingsYesYesYesYes
Seller research (AI read)CappedFullFullFull
Buyer history & risk readQuick read onlyFullFull
Bring your own API keyFree toggleFree toggleFree toggleFree toggle

Bringing your own Anthropic key is a free toggle on any tier — it raises your usage ceiling on your own key's cost, it doesn't unlock a paid tier's features by itself. A 14-day refund window applies to any purchase or renewal.

FAQ

Questions people actually ask.

What does Untangle actually do?

It reads the seller/buyer/review data that's already public on eBay and Amazon and turns it into a plain-language read — feedback history, tenure, review patterns, that kind of thing — without you having to click through five different pages yourself. It's a research aggregator, not a judge: it presents facts and hedged observations ("this suggests," "this may indicate"), never a flat "safe" or "scam" verdict. You still make the call.

Does it work on both eBay and Amazon?

Yes, but the feature sets aren't identical, because the two platforms don't expose the same public data. eBay has a public buyer identity (feedback left/received, tenure) that Amazon simply doesn't have — Amazon has no page where you can look up a specific customer's history. So Buyer Analysis and the Full Buyer History Scan are eBay-only. Seller research, review analysis, and keyword filtering work on both.

What's the difference between the four tiers?

Free gets you hide/filter listings plus a couple of capped lookups a day, so you can try the real thing before paying for it. 7-Day Trial is a one-time, no-card taste of the full Pro Seller feature set, just rate-limited instead of unlimited. Pro Buyer ($7.99/mo) is unlimited seller research on both platforms — the right tier if you're mainly buying. Pro Seller ($16.99/mo) adds unlimited Buyer Analysis and the Full Buyer History Scan on eBay, for sellers who want to vet who they're shipping to. See the full comparison table above.

Can I bring my own Anthropic API key?

Yes — it's a free toggle in Settings on any tier, including Free. Turning it on routes analysis calls through your own key instead of ours, which raises your usage ceiling at your own key's cost. It's a usage-cap workaround, not a backdoor into paid features — turning it on doesn't unlock Pro Buyer or Pro Seller functionality if you're on Free.

Does Untangle ever call someone a scammer?

No. It never uses words like "scam," "fraud," "trusted," or "safe" as a flat label. Where there's a real, specific concern in the data, it says exactly what that concern is and lets you weigh it — and it explicitly separates things outside a seller's or buyer's control (a slow carrier, a one-off complaint) from things that are actually their doing, rather than lumping every negative together.

What happens to the data it reads?

Your request goes to our backend, which calls Anthropic's API to generate the read and sends the result straight back to you — we don't keep a copy of the seller, buyer, or review data afterward. Keyword filtering happens entirely on your own device and never gets sent anywhere. Full detail is in the Privacy Policy.

What if I want to upgrade or downgrade my plan?

Upgrading (Pro Buyer → Pro Seller) takes effect immediately — you're charged a prorated amount for the remainder of your current term at the new tier's rate, and you get Pro Seller access right away.

Downgrading (Pro Seller → Pro Buyer, or either tier → Free) takes effect at your next renewal, not immediately — you keep your current tier's access through the rest of what you've already paid for, then renew into the lower tier. No partial refund or credit for the unused time on the higher tier, consistent with the refund policy above.

Can I cancel anytime?

You can cancel anytime — but cancelling and getting a refund are two different things. Refunds only apply within the first 14 days of a purchase or renewal. Cancel after that window and you keep full access to your current plan's features until that paid period actually runs out; you just won't be billed again after it ends.

Annual or semi-annual — what's the actual difference?

Same features either way — it's purely billing cadence. Annual is billed once a year at a modest discount over paying semi-annually twice; semi-annual means two smaller charges over the same year. Pick whichever matches how you'd rather budget for it.

Which browsers does it support?

Chrome and Opera, both on the Manifest V3 extension platform.

I think it got something wrong about a seller or buyer — now what?

Everything Untangle shows you is sourced from that account's own public feedback/review history — it's summarizing, not independently verifying. If something reads oddly, the popover always has a link back to the real feedback page so you can check the source yourself, and there's a feedback form in Settings if you want to flag it to us directly.

Worth knowing

What it reads, and what it doesn't.

Only eBay & Amazon pages

Untangle only reads the page you're already looking at, on ebay.com or amazon.com — nothing runs in the background on other sites.

Built to describe, not judge

Risk reads are plain-language summaries of public feedback data — never a fabricated reason, never a fraud accusation.

Your key, your data, if you want

Bring your own Anthropic API key and that call never touches our cost or our logs — it's yours end to end.

Real support. No phone tree.

No call center, no hold music, no "your call may be recorded." Submit a ticket and you'll hear back from the person who actually wrote the code.

Submit a request

About

Untangle by Whimsyware

Whimsyware is a one-person software shop.

Untangle is its first product — started as a tool for one seller's own research, before it was anything else. Checking a buyer's history before shipping, sorting out which sellers were worth a second look, filtering out listings that didn't matter.

One person building and supporting it means replies come from someone who actually understands the question, and features ship when they're genuinely ready, not on a roadmap built for a boardroom. Untangle is the first thing Whimsyware has made — it won't be the last.

— Whimsyware