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

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
• Full expense tracking — entry fees, 6 transport types, packaging, and other costs
• Automatic profit calculation — real profit after ALL expenses, not just buy vs. sell
• Multi-currency support — daily exchange rates for cross-border selling
• Market and seller tracking — GPS auto-detection, per-market analytics
• Works 100% offline — critical for markets with no signal
• Google Drive backup — automatic image sync and Sheets export

What are FlipperHelper's limitations?

• iOS only — no Android version yet
• 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?

For casual resellers (under 20 items/month), Google Sheets works. For regular market sourcing (10-100 items/month), a dedicated app like FlipperHelper handles photos, expenses, multi-platform tracking, and profit calculation. For warehouse operations (100+ items), enterprise tools like inFlow are more appropriate.

Should resellers use a spreadsheet or a dedicated app?

Most resellers start with spreadsheets but many switch within 6 months. Spreadsheets are painful on mobile, have no photo support, and get unwieldy past 200+ items. A dedicated app lets you log items in under 10 seconds — consistency matters more than customisation.

Can eBay Seller Hub track my real reselling profit?

No. eBay Seller Hub and similar platform dashboards don't know what you paid for items, can't track expenses (entry fees, transport, packaging), and provide no cross-platform view. You need a separate tool to calculate real profit after all costs.

What features should a reseller tracking app have?

Essential: photo capture at purchase, multi-platform listing tracking, full expense tracking (entry fees, transport, packaging), automatic profit calculation, offline support, and export/backup. The most important factor is speed — it needs to be fast enough to use consistently at the market.