Finally know how much you really make.
No more guesswork in Excel spreadsheets: Chatven calculates your net margins in real time, centralizes purchases, stock and sales, and keeps you below the tax thresholds. Run your reselling like a real business.
- Free to get started
- No installation required
- Secure data
- Mobile & desktop
iPhone 12 Pro · + 215 €
Vinted · vendu en 7 jours
iPhone 13 Pro 256 Go
Paris 11e · Particulier
480 €
↓ −40 € (−7,7 %)
100%
of margins visible in real time
1 click
to follow a listing
0
Excel spreadsheet needed
∞
categories and items
You're selling. But are you actually making money?
Most resellers fly blind. Do you recognize any of these three traps?
Margins by gut feeling
You add up in your head, forget the fees, mix up revenue and profit. The result: you never really know what you're earning.
A spreadsheet that fails you
Twelve Excel tabs, broken formulas, nothing synced with your listings. You spend more time counting than selling.
Fear of the taxman
You don't know whether you're nearing the reporting thresholds. Every year you cross your fingers and hope you're in the clear.
Chatven answers all three — in real time, effortlessly.
Three steps to run your business.
No installation. You're up and running in under 2 minutes.
Create your categories
Phones, sneakers, video games… Pick an icon, a color. All your stats are filed there automatically.
Record your purchases
A single item or a lot to break down. Purchase price, source, date. Import in 1 click from the browser extension.
Track your sales
List items and mark them sold. Net profit, ROI and margin are calculated automatically — by category or overall.
Track your listings from the marketplace, without switching tabs.
Chrome, Edge or Firefox. A floating button on every product page. One click, and Chatven takes over.
1-click tracking
The listing lands in your dashboard with photos, price, seller and date.
One-click listing check
Re-check your tracked listings in one click to spot a price or status change — you decide when, with no automatic monitoring.
Batch check
Re-run the check on all your active listings. Status « online / sold / removed » reported instantly.
Supported sites
iPhone 13 Pro 256 Go Sierra Blue
iPhone 13 Pro 256 Go
Paris 11e · Antoine_75011
480 €
↓ −40 € · 7 j
Buy a lot. Resell item by item.
Break a lot down into as many items as you need. Purchase price per piece or total. Margin calculated on every sale and on the whole lot.
- Break down into several distinct items
- Convert lot ↔ single purchase in 1 click
- Multi-instances : 3 copies of the same item = 3 tracked units
Pack PS5 complet
Bought 350,00 € · 4 items
Your KPIs at a glance. No math required.
Invested, collected, net profit, margin %. Everything calculated in real time, by category or across all categories. Monthly trend chart and margin distribution.
- Real-time KPIs by category
- Monthly sales trend
- Margin distribution (Loss → Excellent)
- Best and worst deals
Statistics · Video games
Invested
1 240,00 €
Collected
1 890,00 €
Profit
+ 650,00 €
Margin
+ 52 %
Margin distribution
Resell with a clear mind.
Above a certain volume, reselling may have to be declared. Chatven tracks your revenue and number of sales in real time, shows where you stand against the legal thresholds, and simulates your taxes. No more nasty surprises.
- Live tracking of revenue and number of sales
- Gauges that turn red before you cross a threshold
- Built-in Micro-BIC tax simulator
- Advice tailored to your situation, automatically
Indicative information — Chatven is not a tax advisor, but gives you the right figures to plan ahead.
Taxes · Year 2026
Below thresholdsEverything you need, nothing you don't.
Designed for occasional resellers and professionals alike.
1-click Chrome extension
Follow a listing from LeBonCoin, Vinted or eBay without leaving the page.
Tracked-listing check
Re-check all your tracked listings in one click to spot a price or status change. You decide when to check.
Batch check
Refresh all your listings at once. Status « online / removed / sold » reported.
Custom categories
Own icon, color and stats. Free organization — as many as you like.
Single or lot purchases
A single item or a lot to break down. Each piece manages its own price and status.
Single ↔ lot conversion
Changed your mind after buying? Switch from a single purchase to a lot (or vice versa) in 1 click.
Stock tracking
Overview of in stock / for sale / sold. Filters by category or by tag.
Profitability stats
Invested, collected, net profit, margin %. All in real time.
Monthly charts
Month-by-month trend, top deals, worst deals, margin distribution.
Global search & tags
Find any purchase or item instantly. Label your pieces with colored tags.
Multilingual · Mobile
FR · EN · ES · DE. Fully responsive interface for phone, tablet and computer.
GDPR export
Download your data as JSON at any time. Delete your account in 1 click.
Three profiles, one tool.
The occasional reseller
You buy and resell games, consoles or clothes from time to time. Chatven tells you how much you've earned, effortlessly.
The lot buyer
You buy in bulk to resell by the unit. Break down each lot, track each item, calculate your margin piece by piece.
The active reseller
You have dozens of items in circulation across several platforms. Centralize everything and stay in control.
Sovereignty, security, transparency.
European hosting
Servers in Europe (Vercel + Supabase), standard contractual clauses applied.
End-to-end encryption
Encrypted passwords. HTTPS everywhere. Per-user isolation via Row Level Security.
GDPR export
Full download in JSON format at any time. Articles 17 and 20 respected.
1-click deletion
Leave Chatven whenever you want. All your data erased, permanently.
Ready to know your real margins?
Free sign-up, no credit card. Up and running in under 2 minutes.
Free · No credit card · < 2 min · Data secured in Europe