SnagFind profitable deals, faster.
SnagSonar watches Facebook Marketplace around you and pings your phone the moment something worth flipping is listed, so you message the seller before anyone else.
7-day free trial for every new member · full access · cancel anytime
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Watch a deal get caught.
The real app, start to finish: a search goes live, the alert hits the phone, and the message is on its way to the seller in under a minute.
The best deals go in minutes.
Be the first to know.
Stop refreshing the app all day. SnagSonar does the watching and tells you when something's worth your time.
Instant deal alerts
Checks as often as every 15 seconds and pings your phone the moment a match goes live, with the price, distance and a link to message the seller.
Powerful filters
Price, distance, year, mileage and skip words. Junk like “broken”, “wanted” posts, scams and shipped listings from far away get hidden for you.
More profit, less effort
See what similar items usually sell for nearby, your estimated profit after fees, and get a heads-up when a seller drops their price.
Set it once. Get pinged. Flip it.
From signing up to your first alert takes about two minutes.
Say what you're hunting
Type it like you'd text a friend. “pc parts” even catches GPUs, CPUs, SSDs and RAM on its own.
We watch 24/7
SnagSonar scans new listings around you day and night, spots the ones priced well under similar items, and filters out the junk.
Message first, win the deal
Tap the alert, send a ready-made message in one tap, and lock it in while other buyers are still scrolling.
Everything you need to spot a deal.
Know a good price when you see it.
SnagSonar compares every listing with similar ones near you and flags the ones priced well below normal, even if they're just outside your filters.
- Typical local price on every listing
- Estimated profit after eBay fees and shipping
- Alerts when a seller drops their price
Only the listings worth your time.
Facebook mixes in junk, repeat posts and sellers from other states who only ship. SnagSonar cleans your feed so every alert is something you could actually go buy.
- Skip words like “cracked” or “mining”
- Catches common typos sellers make
- Cars: year, mileage, no salvage titles
Alerts that fit how you flip.
Pick how fast each search checks, how loud the alert is, and where you shop. Track every flip from first message to sale and watch your monthly profit climb.
- 15 sec to 5 min checks, per search
- Loud alarm for the deals you can't miss
- Flip tracker with a monthly profit goal
Tell us what you flip.
We'll build your searches with you.
Tap Get help inside the app, tell us what you hunt and how far you'll drive, and we'll set up your first searches so the right alerts start on day one. Stuck later? [email protected] usually replies within a day.
Try everything free for 7 days.
Full access to every feature during your trial, no card needed. After that, pick a weekly or monthly plan. Cancel anytime.
Starter
- Up to 10 saved searches
- Checks as often as every 1 minute
- Phone push alerts, loud alarm option
- Smart deal & price-drop alerts
- Flip tracker & profit goals
- Facebook Marketplace (more coming)
Pro
- Up to 10 saved searches
- Checks as often as every 15 seconds
- Phone push alerts, loud alarm option
- Smart deal & price-drop alerts
- Flip tracker & profit goals
- Facebook Marketplace (more coming)
Sign-ups are by invitation right now: request an invite and we'll send you an access code to start your 7-day free trial.
Request an invite
Tell us a bit about what you flip and we'll email you when a spot opens.
Good questions, straight answers.
What is SnagSonar?
SnagSonar is a deal-alert app for people who flip and resell. You set up searches for what you buy, and SnagSonar watches new listings around you and alerts you the moment a match (or an unusually good deal) appears.
Which marketplaces does it watch?
Facebook Marketplace today. OfferUp and Craigslist are next on the list.
How fast are the alerts?
Each search can check as often as every 15 seconds. Facebook reviews new posts for a few minutes before anyone can see them, so an alert that says “posted 7 minutes ago” usually means you're among the very first people to see it.
How do I get notifications on my phone?
SnagSonar works in your phone's browser and can be added to your Home Screen like an app. Alerts arrive as push notifications through the free ntfy app. Setup takes about a minute in Settings → Notifications.
How does it know what's a good deal?
It compares each listing with similar items listed near you and shows the typical price, how far under it the listing is, and your estimated profit after fees and shipping. It's an estimate, so always take a look before you buy.
How much does it cost?
Your first 7 days are free, with full access. After that, plans start at $4.99 a week or $14.99 a month. Cancel anytime; you keep access until the end of what you paid for.
Is SnagSonar part of Facebook?
No. SnagSonar is independent and isn't affiliated with Facebook, Meta or any marketplace. Every purchase is between you and the seller.