Best apps for resellers to track inventory and profit

If you have ever stared at a pile of thrift finds and wondered which ones actually made money, you are the person these apps are built for. The most common setup in the r/Flipping thread that ranks for this search is still "a very basic excel sheet," followed quickly by "but id love something easier."

The problem is that almost every list of reseller apps is written by a company selling one. So this page does three things. It splits profit trackers (which answer "what did I make?") from crosslisters (which answer "where is it listed?"). It prices each one from its own pricing page, as of November 2026. And it gives you the cheap physical habit that matters more than the app you pick.

What does a reseller inventory app need to track?

A good tracker records, for every single item, what you paid, where it is, where it is listed, and what you kept after fees and shipping. If an app cannot show that last number per item, it is a listing tool, not a profit tracker.

Here are the fields that matter, in plain terms:

• Cost of goods: what you paid for the item, including its share of a lot.
• Location: the shelf, bin or bag where it physically sits.
• Platforms: where it is listed right now.
• Net profit: sale price minus platform fees, shipping label, supplies and cost.
• Days listed: how long it has sat. Old stock is cash you cannot spend.
• Expenses and mileage: the costs that are not tied to one item.

A reply in an r/InventoryManagement thread named the real pain well: the same kind of item bought at different prices on different days, and no clean way to see which copy made what. Every app below solves that in its own way.

Quick picks: the best reseller trackers compared

The short answer: Flippd for phone-first beginners, Flipwise for eBay-heavy sellers, Vendoo if you crosslist widely, and a spreadsheet if you sell fewer than about 20 items a month.

Watch out: Prices change often. Check each pricing page before you pay, and cancel trials you do not plan to keep. Vendoo, for example, says a charge after the trial ends is non-refundable.

Flippd: the easiest phone-first tracker

Flippd is an inventory and profit tracker built for your phone, and its free tier gives every feature for up to 20 items. That makes it the lowest-risk way to stop guessing.

You snap photos, enter what you paid, and mark which platforms the item is listed on. When it sells, you pick the platform and enter the price, and Flippd applies that platform's fee structure to show true profit. It also logs receipts, mileage and storage locations, and it splits a bulk purchase across items. Pro is $9.99 a month or $99.99 a year, and it covers iPhone, Android and the web.

The limits are clear on Flippd's own FAQ: it is not a crosslister, and its only marketplace connection is a one-way eBay import. Poshmark and Mercari sales you log yourself. For a beginner that is fine, because typing the sale price takes ten seconds and forces you to look at the number.

Flipwise: best for eBay-heavy sellers

Flipwise connects to eBay and fills in your sales, fees, shipping labels and refunds automatically, so you only add what eBay cannot see: your cost, where you bought it, and where it sits.

Its standout features for resellers are bulk buys (enter a storage unit or pallet price once and it splits the cost across every item, then shows the whole buy's ROI), a running profit and loss statement, Schedule C expense categories and mileage. It also adds automations like ending and relisting before auto-renew and dropping prices on old stock. You can record Poshmark, Mercari, Etsy or offline sales alongside eBay.

Pricing is based on your store size (active listings plus sales in the last 30 days), with a free plan for new members up to 24 listings and a 7-day money-back guarantee. One r/reselling seller said of it: "would never have started without that kind of data. I have to see the progress." If eBay is not your main channel, you lose most of the automatic sync, and Flippd is simpler.

Vendoo and other crosslisters: do they track profit?

Yes, but tracking is a side feature. Vendoo includes profit tracking and analytics on every plan, yet you are mostly paying for posting one listing to 10 or more marketplaces and auto delisting it when it sells.

Vendoo's plans run $14.99, $29.99 and $59.99 a month (or $12.49, $24.99 and $49.99 billed yearly), each with a 14-day free trial. In the r/reselling tools thread, one seller called Vendoo "leaps and bounds better than list perfectly," and another said List Perfectly "feels really outdated." Treat that as opinion, not a test.

The honest rule: a crosslister earns its fee when you list on three or more platforms. If you sell on eBay and Facebook Marketplace only, you will pay more for features you do not use. Our eBay vs Facebook Marketplace vs Mercari comparison helps you decide how many platforms you need in the first place.

Is a spreadsheet good enough?

For a beginner, often yes. The top replies in the r/Flipping thread were "Google Sheets" and a seller who downloads the sales CSV from eBay and Etsy and crunches it. Another found QuickBooks "not beginner friendly."

Set up one row per item with these columns:

Item # | Date bought | Source | Lot ID | Cost | Location | Listed on | Date sold | Sale price | Fees | Shipping | Supplies | Profit | Days to sell

Profit is Sale price - Fees - Shipping - Supplies - Cost. Days to sell is Date sold - Date bought. Sort by days listed once a week and you have the same aging report the paid apps sell.

A spreadsheet breaks down in three places: splitting lot costs by hand, keeping multiple platforms in sync, and remembering to update rows on busy days. When those start costing you more than about $10 a month in mistakes or time, move to an app.

The habit that matters more than any app: number every unit

Write a number on every item, or its bag, the day you buy it, and put that same number in your tracker. No app can fix a garage where nobody knows which box is which.

This comes straight from the Reselling pack's playbook. A seasonal flipper on r/Flipping blamed his worst loss on mixing vent kits across about 40 portable AC units in a basement. The fix was masking tape, a marker and one bag per unit. Here is the routine:

1. Before you leave the store or sale, photograph the receipt.
2. At home, give each item the next number (for example R-0142) on tape or a tag.
3. Bag loose parts, cables and manuals with the same number.
4. Enter the number, cost, source and bin location in your tracker before you list.
5. Put the number in the listing's private SKU or custom label field so a sale points you to the right shelf.
6. When it sells, mark it sold with the real fees and label cost, not estimates.

Tip: For a lot, number each piece separately but give them a shared lot ID. That is how you find out whether a $240 storage unit actually paid, not just the one drill that sold fast.

The Reselling pack turns this into a checklist along with the sourcing and shipping steps, so the habit is set up before your pile grows.

Is a paid tracker worth it? The break-even math

A tracker pays for itself when it saves or finds more than its monthly cost. At $9.99 a month, that is small, but it is not zero.

Take a part-time seller with 30 sales a month at about $15 average profit each, so $450 a month. A $9.99 app costs about 2% of that profit, roughly 33 cents per sale. If tracking shows you that one category sells at a loss after shipping, or catches one missed $8 shipping adjustment and one underpriced lot, it has covered itself.

Now take a beginner with 8 sales a month. The same app costs about $1.25 per sale, and a free tier or a spreadsheet does the job. For a fuller view of what part-timers really keep, see how much you can make reselling part time. If you are still on a tight budget, starting reselling with no money shows how to stay on free tools.

Mistakes resellers make with tracking apps

Most tracking failures are habits, not software. These came up again and again in the threads:

• Logging sales but not costs. Revenue looks great until you subtract what you paid. If cost is blank, the profit number is fiction.
• Using estimated fees. Enter the actual fee and label cost. Shipping adjustments for wrong box sizes are a common quiet loss in the pack's research.
• Stacking subscriptions. A crosslister, a tracker and a listing tool can top $50 a month before you have consistent sales. One reply in r/InventoryManagement framed it as choosing what to spend now versus later; for a beginner, spend almost nothing.
• Trusting a vendor's roundup. Most threads and lists recommending apps are written by the people who built them. Use the free tier and decide from your own data.
• Forgetting the death pile. Unlisted inventory is still money spent. Log items when you buy them, not when you list them.
• Ignoring days to sell. A $40 profit item that sits for six months is often worse than a $12 item that sells in a week.

Where to go from here

1. This week, start a free tracker (Flippd's free tier or a Google Sheet) and enter everything you currently own.
2. Number every unit and bag its parts, and match the numbers to your tracker.
3. Log real fees and shipping on every sale for one month.
4. Sort by profit and days to sell, and source more of what wins.
5. Only then pay for an app, and only for the gap you actually have: eBay sync, lot splitting or crosslisting.

The Rushilo Reselling pack adds the full 24 lessons across 6 modules, with the sourcing math, comp checklists and the record keeping routine above, for $19, or get all 16 Money Printer packs for $39. Results vary with your buys and your hours, and no app makes a bad buy profitable.