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Last updated: 3 April 2026

Best Apps for Resellers in 2026: Tracking Inventory, Sales, and Profit

3 April 2026 Comparison 8 min read

Most resellers start with Google Sheets or Excel, but many switch to a dedicated app within 6 months. If you resell from car boot sales, charity shops, or flea markets, you need a way to track what you buy, where you list it, and what you actually make after all expenses.

Here's an honest comparison of what's available in 2026 — with real pros, cons, and who each tool is best for.

"The best tracking system is the one you'll actually use at 7am in the rain. Features don't matter if the app stays in your pocket." — Oleksandr Prudnikov, FlipperHelper developer and active reseller

Is Google Sheets good enough for tracking reselling?

Google Sheets works for under 20 items per month but breaks down at scale. It's free, completely customisable, and works on every device. Most resellers start here.

What are the pros of using spreadsheets?

Completely free and familiar to most people
Build exactly the layout and formulas you want
Works on every device with a browser
Easy to share with a business partner
Powerful custom calculations with formulas

What are the cons of spreadsheets for reselling?

Painful on mobile — opening a spreadsheet at a car boot at 7am kills consistency. Many resellers cite this as the main reason they stop tracking
No photo support — images end up in a disconnected folder
Manual formulas — profit calculations, expense breakdowns, and days-to-sell all need custom formulas that break
Gets unwieldy — past 200+ items, spreadsheets become slow and error-prone
No expense tracking built in — entry fees, transport, and packaging need separate sheets

Best for: Casual resellers selling fewer than 20 items per month who are comfortable with spreadsheets.

Is inFlow Inventory worth it for resellers?

inFlow is a full inventory management system built for traditional retail — not individual resellers. It starts at $89/month after a 100-product free tier. That's over £1,000/year.

What does inFlow do well?

Full inventory management with barcode scanning and stock levels
Multi-location support and warehouse tracking
Reporting, analytics, and B2B features (invoicing, customer management)

Why is inFlow not ideal for flippers?

Price: $89+/month is hard to justify for most side-hustle resellers
Overkill: Purchase orders, warehouse management, and supplier tracking aren't relevant for car boot sourcing
Missing reseller features: No platform tracking, no entry fee/transport expense tracking, no market-specific analytics
100-product free tier is limiting — most active resellers exceed that in 2-3 months

Best for: Resellers running a proper warehouse business with wholesale stock, not market/boot sale flippers.

Can you use My Inventory for reselling?

My Inventory is a general-purpose cataloguing app — it tracks what you own, not what you buy and sell. It has photo support and barcode scanning, which helps with organisation.

What does My Inventory offer?

Simple personal inventory tracking with photos
Barcode scanning and category organisation
Available on iOS and Android

What is My Inventory missing for resellers?

No profit tracking — no way to record sales or calculate margins
No expense tracking — entry fees, transport, and platform fees are invisible
No listing management — can't track which platforms items are listed on
Limited reporting — no sell-through rate, days-to-sell, or profitability metrics

Best for: People who need to catalogue what they own, not track buying and selling for profit.

What makes FlipperHelper different from other reseller apps?

FlipperHelper is the only app built specifically for the market-sourcing reseller workflow — from the moment you pick up an item at a car boot sale to the moment it sells. It's free to download with no ads.

What features does FlipperHelper have?

Photo capture at point of purchase — snap and log in under 10 seconds
16 selling platforms — track listings on eBay, Vinted, Facebook, Depop, Shpock, and more, plus Private Sale for hand-to-hand sales
Full expense tracking — entry fees (with smart previous-amount suggestions), 6 transport types, packaging, and other costs
Automatic profit calculation — real profit after ALL expenses, not just buy vs. sell
Hauls (sourcing trip tracking) — group items and expenses by trip dates, track per-trip profitability as items sell over time
Stock value on Home screen — see total invested in unsold inventory, items grouped by purchase date, percentage already listed
Top Flips & share cards — see your most profitable sales and share visual cards to social media (sold items, top flips, daily purchases, full stock)
Money Flow dashboard — revenue, costs, profit, and stock investment viewable by week, month, or custom date range
Multi-currency support — daily exchange rates for cross-border selling
Market and seller tracking — GPS auto-detection, per-market analytics
Search — find items by name or SKU across your entire inventory
Works 100% offline — critical for markets with no signal
Backup & export — automatic backup (iCloud on iPhone, folder backup on Android) and a portable ZIP file for backup; plus optional Google Drive photo sync and Google Sheets export to view and work with your data on a PC. Data survives even if the app is deleted

What are FlipperHelper's limitations?

No web app — mobile only (iOS and Android)
No direct platform API integration — listings are marked manually
Newer app — smaller community compared to established tools

Best for: Resellers sourcing at markets, car boot sales, and charity shops who sell across multiple platforms and want to know their real profit.

Can eBay Seller Hub or Vinted dashboard replace a tracking app?

No — platform dashboards track sales on one platform but can't show your real profit. Every selling platform has analytics: eBay Seller Hub, Vinted stats, Facebook Marketplace insights. But they all share the same 4 blind spots:

No cross-platform view: If you list on 3 platforms, you need 3 dashboards. Most UK resellers use 2+ platforms
No purchase tracking: They know what you sold, not what you paid
No expense tracking: Entry fees, transport, packaging — completely invisible
No real profit: Without knowing your full costs, the "sales total" is meaningless

Platform dashboards are useful for managing listings but cannot tell you if your reselling is profitable.

How do you choose the right reseller tracking tool?

Match the tool to your volume and sourcing style. The best tool depends on how many items you move and where you source them:

Under 10 items/month, casual: Google Sheets is fine. Don't overcomplicate it
10-100 items/month, regular market sourcing: A dedicated reseller app saves 2-3 hours/week and shows your real numbers
100+ items/month, running a business: Reseller app for sourcing + accounting tool for tax (some full-time resellers use this combination)
Warehouse/wholesale operation: Enterprise inventory system like inFlow

The key question isn't "which app has the most features" — it's "will I actually use it at 7am at a rainy car boot sale?" Consistency beats features every time.

Frequently asked questions

What is the best app for resellers in 2026?

There isn't one universal answer — it depends on your volume and how you source. For casual resellers moving under 20 items a month, a Google Sheet is genuinely fine; the overhead of a dedicated app isn't worth it yet. For regular market sourcing in the 10-to-100-items-a-month range — the sweet spot for most car boot, charity shop, and flea market resellers — a dedicated app like FlipperHelper earns its place: it handles photo capture at the point of purchase, expense tracking, multi-platform listing tracking across up to 16 marketplaces, and automatic profit calculation after every cost, all fast enough to use standing in a car park. For warehouse-scale operations moving 100+ items with staff and physical inventory locations, enterprise tools like inFlow are built for that scale of stock control and are the better fit. The honest answer is to match the tool to your actual volume.

Should resellers use a spreadsheet or a dedicated app?

Most resellers start with a spreadsheet, and many switch to a dedicated app within about six months — not because spreadsheets can't technically do the job, but because they stop getting used. Spreadsheets are painful to fill in on a phone at a market with cold hands and patchy signal, they have no native photo support, formulas break silently when a column gets inserted in the wrong place, and past roughly 200 items the file gets slow and unwieldy on mobile. A dedicated app trades some of that flexibility for speed: snap a photo, enter a price, move to the next item, all in under ten seconds. That speed is what actually determines whether tracking happens consistently — a perfect spreadsheet template you stop filling in after three weeks is worth less than a basic app you actually use every market day.

Can eBay Seller Hub track my real reselling profit?

No, not on its own — and this catches out a lot of resellers who assume their platform's built-in dashboard is tracking profit when it's actually only tracking sales. eBay Seller Hub and similar platform dashboards are genuinely useful for managing active listings and watching gross sales on that specific platform, but none of them know what you originally paid for an item, so they can't calculate real profit — only revenue. They also can't see expenses that happen outside the platform, like a car boot pitch fee or transport, and if you sell across multiple platforms, each dashboard only shows its own slice, never the combined picture. You need a separate tool that captures purchase price and every expense alongside what each platform reports as sold.

What features should a reseller tracking app have?

Six things matter most, in roughly this order. First, speed — the app needs to be fast enough to use standing at a market stall, or you'll stop using it within weeks. Second, photo capture at the point of purchase, so every item has a picture attached from the moment you buy it. Third, full expense tracking beyond just purchase price — entry fees, transport, and packaging all eat into real profit and need their own fields, not one vague "costs" box. Fourth, multi-platform listing tracking, since most resellers sell across more than one marketplace. Fifth, automatic profit calculation that does the math for you instead of a mental estimate. Sixth, offline support and export/backup — markets often have no signal, and your inventory history needs to survive a lost or replaced phone. Speed is the one factor that determines whether the other five ever get used.

Try FlipperHelper free

Built for resellers who source at markets, boots, and charity shops. Track purchases with photos, manage listings across 16 platforms, log all expenses, and see your real profit. No signup required, works offline.

Download Free on the App Store Get it Free on Google Play