Stop bad watch data from spreading.
Buyers forgive scratches. They don't forgive wrong references or mixed specs. WatchReactor checks your listings and flags mismatches before disputes or returns.
What you get
Check a listing two ways. Paste a live URL, or upload photos with your draft specs. We flag likely mismatches between the photos and the claimed reference or movement.
Build portfolios on verified data. Attach receipts and service history, see value changes and export insurer or resale-ready PDFs and CSVs.
APIs for specs, images and price estimates. Versioned endpoints so your integrations stay stable.
Who It's For
🏪 Professional dealers
Catch mismatches before they turn into returns, disputes, or repeated mistakes across channels.
⌚ Collectors
Track what you own with clean specs, receipts, service history and exports for insurance.
🔧 Developers & API users
Plug clean watch data into your stack with a versioned API with data attribution and changelogs.
Frequently Asked Questions
How does a listing check work from a URL?
Paste a live listing link. We fetch the photos and stated specs, then match dial, bezel and case details against 50,000+ references. If the photos don't fit the declared reference or movement, we flag it so you can correct the listing and avoid copying the same mistake to other channels.
Can I check a listing before publishing it?
Yes. Upload photos and/or enter your draft specs. This is the pre-publish flow. URL checks are for listings that are already live.
What kind of data is available?
Each reference includes structured specs: brand, model, reference number, case size, materials, movement, production years, photos, plus price ranges with source attribution.
The same data is available via API.
Where do specs and prices come from?
We combine vetted catalogs and manufacturer data where available. Every field lists sources and last updated timestamps so you know what changed and why.
Can I track my own collection?
Absolutely. You can add watches to a private dashboard. Track value changes with your own receipts and notes attached and export insurer or resale-ready PDFs and CSVs. Your data stays yours; delete it anytime.
How is my data protected?
We store only what you submit for a check. You choose what stays and you can export or delete everything at any time.
Is there an API for developers?
Yes. Pull specs, images and price estimates through a versioned API. Use it to validate listings, sync inventory, or power internal tools. Enterprise tiers will support high-volume access.
How is WatchReactor different from Chrono24?
Chrono24 is optimized for selling. WatchReactor is optimized for correctness before selling. We flag inconsistencies with sources and context. We don't rank, promote, or monetize listings. Use us alongside any marketplace or your own site.
Get early access.
Request a beta invite. Tell us your use case and we will invite you in waves.
- 🚀 Get a beta invite
- 🧩 Provide feedback
- 📈 Shape the product
What's Coming
- 🔎 Listing checks: URL checks and pre-publish uploads.
- 📄 Reports: exportable PDFs for internal use and insurers.
- 💾 Portfolios: receipts, service history and clean exports.
- 🔌 API: clean watch data with versioning and data sources attribution.
Product roadmap shaped by early users.