Know your flip profit
before you bid.
The second a coin or card hits your Whatnot stream, Ruby pulls the real sold price — live — and shows your flip profit. Buyers stop overpaying. Flippers stop missing the deal. You bid on numbers, not adrenaline.
Get Ruby — 1 year for $100
Everything costs more.
Your hobby shouldn't.
You get seconds to decide in a live Whatnot auction. Ruby shows the real sold price and your exact profit before you bid — so you never overpay, and never miss the flip.
Ruby just got a lot sharper.
Real sold prices on everything now — with proof it's the same item, and an ear on the stream so you never miss what's on camera.
Local AI Vision free
Reads the actual coin or card even when sellers hide it behind flashy banners and junk titles like “Fire item #52.” Runs 100% on your Mac — no account, no cost.
Real SOLD prices — every category
Not just cards. Coins, graded slabs, and collectible toys & merch — NeeDoh, Funko, Sonny Angel, Squishmallow, Labubu — all priced off real eBay SOLD comps.
Photo Match (1:1)
Ruby compares the live video frame to the comp photos and shows a “Photo match” badge — so you know the price is for the exact same item. On-device and free.
Listen to Seller beta
Optionally uses the stream's audio (never your mic) to catch item names the seller says out loud — transcribed right on your Mac.
Real graded-coin values
NGC/PCGS MS & PR grades priced to the correct tier — plus Japanese & Korean graded slabs (CGC/PSA/BGS).
Accurate-or-nothing
Shows a price only when it can confirm the item. If it can't, it says “no price” — never a fake number. 100% read-only, nothing uploaded.
One-click setup
A single Setup Ruby command and a first-run wizard get you running in about two minutes — no tinkering, no keys required.
Up and running in 3 steps
After checkout, keep the Ruby folder and double-click Setup Ruby.command once.
chrome://extensions → Developer mode → Load unpacked → the ruby-extension folder. The wizard opens itself.
Paste your RUBY- key, refresh a live stream, and Ruby appears on the right.
How Ruby reads a live auction in real time.
Five things happen in the second an item hits your stream — all on your Mac, all read-only, nothing uploaded.
Detects the item
Reads the on-screen title the moment a lot goes live — and can listen to the seller's audio (never your mic) to catch names said out loud.
Local AI vision
On-device vision compares the live video frame to real listing photos. Runs free on your Mac — 100% read-only.
ON-DEVICEPulls real SOLD comps
Fetches actual eBay SOLD prices for that exact item — cards, coins, graded slabs, collectibles. Not asking prices.
Photo-matches it
Shows a “Photo match” badge so you know the price is for the identical item — not a lookalike.
1:1 MATCHCalls it: GREEN or RED
Calculates realistic resale + your flip profit, then shows GREEN to buy or RED to pass — before the timer hits zero.
Accurate-or-nothing: if Ruby can't confirm the exact item, it says “no price” — never a fake number. Nothing is ever uploaded from your screen.
Get Ruby — 1 year $100guarantee
after checkout
no auto-renew
checkout
Turn your Whatnot habit into a
profit machine.
If you're already buying a dozen lots a week, Ruby makes sure every one of them makes money — not just the ones you got lucky on.
Ruby tells you WHEN to bid.
The playbooks teach you how to win everything else.
Add the Whatnot playbooks to your order — buying and selling, from people who live it.
Grab both and you've got the complete system for under $60.
Get the complete system
The Ruby app + the Buyer's and Seller's playbooks — everything to flip Whatnot for profit, in one download.