fernsignalFind the product.
Check the working.
Explore products, compare niches and model the costs of selling. Keep the source, date and assumptions attached to every decision.
Import your data or search Keepa with your own API key. No invented sales estimates.
Seller Desk
Your research is stored in this browser.
DEMO WORKSPACE — synthetic examples for exploring the tools. These are not real products, prices, demand or research evidence.
Make your research searchable.
Add observations from a CSV, the Amazon capture helper or your Keepa account. Missing values stay unknown; a price or rank is not proof of demand.
Import product observations
Use the actual source of your data.
Required: asin, title. Optional: marketplace, price, currency, brand, category, rank, reviews, rating, monthly_bought_lower_bound, observed_at, source. You can supply the marketplace, timestamp and source above if the file does not include them.
Search the Keepa product database
Requires your own paid Keepa API subscription. Your key is sent to Keepa through our server for this request and is never saved. A keyword search uses a finder request plus up to 10 product lookups (typically 21 tokens); direct ASIN lookup uses up to 10. Keepa controls token costs and availability.
Niche summaries describe the products in your current filtered sample. They do not estimate total market size, future sales or profitability. Different currencies are never combined.
History with a timestamp.
See observed prices and rank changes. Import another capture to extend the history. Automatic Amazon refresh is not included.
Observed new price
Observed sales rank
What remains after the costs?
This is a scenario calculator. Enter every cost, including explicit zeros. Fee percentages apply to the gross sale price; VAT is removed from the VAT-inclusive price. Amounts use one currency throughout.
Confirm actual Amazon fees, taxes, category eligibility, returns and acquisition costs before purchasing inventory. Tax recovery and other business overhead are not modelled. A positive scenario is not evidence of customer demand.
Find the words in your evidence.
Explore terms in product titles or import a search-term report. Title frequency measures your sample; it is not Amazon search volume.
Import a search-term report
Columns: search_term, impressions, clicks, orders, spend, sales. Keep reports in one currency. Missing metrics remain unknown.
Draft a clearer listing.
Check word coverage and repetition using your chosen terms. This is a writing aid; you remain responsible for accurate claims and marketplace rules.
Compare actual supplier quotes.
Record suppliers and the quote terms you have obtained. These are your records, not verified supplier recommendations. No supplier is contacted automatically.
Plan replenishment.
Calculate a reorder point from your own sales rate and lead time. This uses a steady sales-rate assumption; it does not predict seasonality or place orders.
Learn from sales and reviews.
Analyse your own exported reports. Review themes are simple text frequencies, and financial results use the fields in your file.
Sales report
Review explorer
Your research.
Available across devices.
The free local workspace includes the research tools. Pro adds cloud saving. Keepa data requires your own separately paid API subscription.
Free local workspace
£0
- CSV and capture imports
- All research and calculation tools
- JSON backups and CSV exports
Seller Desk Pro
£19 / month
- Everything in the local workspace
- Save and load your research in the cloud
- Support through your account
Renews monthly until cancelled. Provider data charges are separate.
Before you start.
Is this a global Amazon database?
The local database contains observations you import. The Keepa connection searches Keepa's catalog using your own subscribed API key. Fernsignal does not provide an independently collected global dataset or Jungle Scout's proprietary sales estimates.
What does product tracking include?
It charts your timestamped snapshots and any Keepa history returned with your lookup. To refresh a product, import another capture or make another Keepa request. The current product does not refresh Amazon listings automatically.
What happens to my data?
The free workspace stays in this browser. Make backups before clearing site data. If you choose Pro and save to cloud, we store that workspace in your account. Keepa keys are used for a single request and never stored.