Decide before you buy
Photo identification, live eBay comps, and a sold-price estimate in one step, on your phone, so you have a read on an item's resale value while you are still standing in the aisle.
Comparison for eBay sellers
Strooply vs Underpriced AI for eBay sellers
Both apps let you photograph an item and see what it may sell for. Strooply is built around eBay end to end, from the scan to the listing to your profit and taxes. Here is how they compare at each step. This page covers Underpriced AI (underpricedai.com); a separate product called Underpriced (underpriced.app) is not covered.
Disclosure: Strooply is made by The Stroop LLC, the publisher of this page. Underpriced AI is a trademark of its respective owner. Strooply is not affiliated with or endorsed by Underpriced AI. Competitor details come from Underpriced AI's own website and App Store listing as of September 29, 2026 and are cited below. Plans and features change, so check their site before you decide.
The short answer
Why eBay sellers choose Strooply
Strooply covers the whole eBay workflow in one phone app: identify and price an item before you buy it, draft the eBay listing with AI on any plan, and see true net profit after fees and cost of goods, with mileage and receipts for tax time. Underpriced AI's strengths are pay-per-scan pricing and a crosslisting extension.
Step by step
The eBay workflow: Strooply vs Underpriced AI
Each row follows an item from the moment you find it to the moment you file taxes on the profit.
| Step | Strooply | Underpriced AI |
|---|---|---|
| Deciding what to buy | Point your phone at an item: Strooply identifies it, pulls live eBay comps, and gives a sold-price estimate before you type anything[S2][S3] | Photo identification that shows the sold listings behind a price; for US and UK scans it draws on an eBay sold-price API first, then a backup service and its own archive; barcode scanning for books, CDs, and vinyl[1][2] |
| Creating the eBay listing | AI drafts the title, description, category, condition guidance, and eBay item specifics from your photos, on every plan[S1][S2] | One-tap eBay listing from the scan screen[1][2] |
| Publishing to eBay | You review the draft, then Strooply publishes through eBay's official API with your photos and business policies[S2] | Lists on eBay from the app and joins your existing Promoted Listings campaign; a free browser extension crosslists to other marketplaces[1] |
| Knowing your real profit | Syncs eBay final value fees, ad fees, shipping, and refunds, and subtracts cost of goods, with lot cost allocation on Pro and Team, for true net profit[S1][S2][S3] | Profit and ROI calculator, inventory tracking, and analytics[2] |
| Mileage, receipts, and taxes | Sourcing trips, mileage, receipt scanning, and a tax summary on Pro and Team[S1] | Not described on the pages we reviewed |
| Working from your phone | Native iOS and Android apps: research, draft, and publish from your phone, plus a web app[S3] | iOS app and a web version; an Android app is linked from its site[1][2] |
| Price and free option | Free plan with no credit card, then $12.99/mo (Starter), $29.99/mo (Pro), $79.99/mo (Team)[S1] | One free scan with no card; scan packs from 5 for $3 up to 250 for $70 with credits that do not expire; subscriptions start at $5 a month[1] |
| Listing volume | Monthly publishes and lookups by plan: 5 and 15 on Free, 100 and 500 on Starter, 250 and 1.25k on Pro, 1k and 5k on Team[S1] | Priced per scan rather than per listing; no listing cap is described on the pages we reviewed[1] |
Built for eBay
Where Strooply stands out for eBay sellers
AI eBay drafts on every plan
Titles, descriptions, categories, and item specifics drafted from your photos. Nothing publishes until you review it.
Profit that matches your payout
eBay fees, ad fees, shipping, refunds, and cost of goods flow into one net profit number per item, with lot cost allocation on Pro and Team.
Sourcing to tax time in one app
Log sourcing trips and mileage, scan receipts into cost of goods, and pull a tax summary, without a second tool for the books.
Worth knowing about Underpriced AI: Underpriced AI sells scan packs whose credits do not expire, publishes weekly accuracy grading of its estimates, and offers a crosslisting extension. People who scan only now and then, or who sell across many marketplaces, may prefer it. A separate product named Underpriced (underpriced.app) says it is not affiliated with other services using that name; this page does not cover it.[1][3]
Underpriced AI may be the better choice if
Questions
Strooply vs Underpriced AI FAQ
Is Strooply or Underpriced AI better for eBay sellers?
For sellers who focus on eBay, Strooply covers more of the workflow in one place: photo identification with live comps and sold estimates, AI drafts on every plan, true net profit with cost of goods, and mileage and receipts. Underpriced AI centers on the scan and a one-tap listing, with pay-per-scan pricing.[1][2]
Are Underpriced and Underpriced AI the same product?
Not as far as we can tell. They are separate websites and separate App Store listings, and underpriced.app says it is not affiliated with other services using the name. This page covers Underpriced AI (underpricedai.com).[1][3]
Which one is cheaper to start?
Strooply has a free plan with no credit card and paid plans from $12.99 per month. Underpriced AI offers one free scan, then scan packs or subscriptions from $5 a month.[1]
Sources
Where these facts come from
- Underpriced AI website, underpricedai.com
- Underpriced AI on the App Store, apps.apple.com
- Underpriced (a separate product), underpriced.app
- S1. Strooply plans, strooply.com/#pricing
- S2. How Strooply works, strooply.com/how-strooply-works
- S3. Strooply features, strooply.com/#features
Last verified September 29, 2026. Spot an error? Email zach@strooply.com and we will correct it.
Built for eBay sellers. Free to start.
Snap a photo, check live comps and sold estimates, and see your real profit. No credit card required.