Updated May 2026
Best Whatnot apps for sellers
Honest picks. We make one of these (AfterShows, the analytics one) and we're upfront about it. The rest are real, recommendable tools we've used or seen sellers swear by. Pricing accurate as of May 2026.
Analytics and profit tracking
See your real numbers. Fees, costs, profit per show, top buyers, retention. Whatnot's native dashboard is estimates.
AfterShows
That's usGood for: Sellers who want real profit (after fees and inventory cost) plus a Schedule C export
Pros
- Built for Whatnot first, not a generic reseller tool
- Tracks what you paid for inventory, with bulk lot distribution
- One-click Schedule C-ready CSV at year-end
- Per-show drill-down, multi-week trends, lapsed buyer alerts
- Boost ROI tracker (manual entry today, auto in v2)
Cons
- Whatnot only in v1, eBay and Mercari coming
- Manual cost entry today, eBay or Mercari import in v1.1
SellDeck
Good for: Sellers who want one app to do many things
Pros
- Strong SEO presence
- Listing helpers and inventory features
Cons
- Generalist, doesn't go deep on any one thing
- Light public review footprint
- Doesn't own selldeck.com (parked)
Seller Ledger
Good for: Multi-platform resellers who want accounting plus inventory in one tool
Pros
- Mature product
- Chrome extension auto-sync
- Multi-platform (Whatnot, eBay, Mercari, Etsy)
Cons
- Bookkeeping, inventory, tax, and COGS in one UI can feel busy
- UI shows its age
- Not Whatnot-native, Whatnot is one of many
Bookkeeping and tax
Schedule C, 1099-K reconciliation, year-end exports.
QuickBooks Self-Employed
Good for: Sellers who want a generalist accounting tool
Pros
- Industry-standard
- Tax-prep integrations
- Mileage tracking
Cons
- Doesn't understand Whatnot CSVs out of the box
- Manual mapping required
- Overkill if you only sell on Whatnot
Spreadsheets (Google or Excel)
Good for: DIY-ers comfortable with formulas
Pros
- Free
- Total control
- 13 of 38 r/whatnotapp poll respondents already do this
Cons
- Hours per week
- Easy to make mistakes at scale
- No automation
Inventory and cross-listing
Manage listings across Whatnot, eBay, Mercari, Poshmark.
Vendoo
Good for: Cross-listers between Whatnot, eBay, Mercari, and Poshmark
Pros
- Listing automation across platforms
- Inventory tracking
Cons
- Listing-focused, not analytics
- Whatnot integration newer than eBay or Mercari
List Perfectly
Good for: High-volume cross-listers
Pros
- Mature cross-listing tool
- Bulk operations
Cons
- Pricing tiers scale fast
- Whatnot less prominent than eBay
Streaming and production
Camera, overlays, multi-source setups for power streamers.
Streamlabs / OBS
Good for: Custom overlays and multi-source streaming setups
Pros
- Industry-standard streaming software
- Big plugin ecosystem
Cons
- Not Whatnot-specific
- Steep learning curve if you've never streamed
Whatnot's native streamer
Good for: Most sellers, especially when starting out
Pros
- No setup
- Mobile-first
- Built into the Whatnot flow
Cons
- Limited customization
- No multi-camera
Card and item pricing lookup
Comping cards before listing. PSA, TCG, recent eBay sales.
PSA price guide
Good for: Pricing slabbed sports cards
Pros
- Authoritative for slabbed cards
- Population reports
Cons
- Sports cards only
- Lookup-only, no Whatnot integration
TCGPlayer
Good for: Pokemon, Magic, Yu-Gi-Oh pricing
Pros
- Real-time market data
- Card-by-card lookup
Cons
- TCG only
- Not integrated with Whatnot inventory
130point
Good for: Comping recent eBay sales for sports cards
Pros
- Sold prices, not asking prices
- Fast lookup
Cons
- eBay-centric
- Sports cards only
Boost ROI tracking
Whatnot's Boost feature lets you pay to promote shows. But sellers consistently report not knowing if it's actually working. There's no native ROI dashboard. Sellers track manually or give up. AfterShows's Boost ROI tracker lets you log a Boost window and spend, then shows the lift versus prior same-time windows. Auto-detection from the Whatnot Ledger CSV ships in v2.
Want AfterShows specifically?
Free for 2 uploads. Pro is $19/mo. Built for Whatnot sellers who want real profit (after fees and inventory cost) plus a Schedule C export at year-end.