Small, single-purpose tools built on public data. Each one answers a single question and shows the official source behind the answer.
What an item actually sold for on Vinted, not what sellers are asking: the median, the typical range and the number of sales behind it, with the sold listings themselves so you can check them. Covers 7 countries. Variants are kept apart (iPhone 13, 13 Pro and 13 mini are three answers), and replicas and box-only listings are left out. Free during the beta, with an API.
Popular: Vinted sold prices · browse tracked items · API docs
Track new mobile games in soft launch on iOS and Android — which countries a game is testing in, which ones are expanding their soft launch, and which are about to go global, often weeks before anyone else notices. Free weekly report, no signup required.
Popular: This week's top soft launches · Sample report
Write down one task, pick 15 to 90 minutes, and a quiet companion works beside you with rain or brown noise in the background. No video, no strangers, no account — it runs in your browser.
Pick a product and a country of origin and get the HTS code and the total US duty on it today, layer by layer: the normal (MFN) rate, Section 301 and Section 232, each with the tariff schedule heading it comes from. Covers 107 common products from China, Vietnam, India, Mexico and the EU, recomputed every week.
Popular: duty by country — report and data · solar panels from China · laptops from China · t-shirts from Vietnam · steel screws from China · classify a whole list
swanum is a small independent studio. The tools have no ads and no third-party trackers, and a number with no source behind it does not go on a page. If something is wrong, write to contact@swanum.com — it is read by the person who fixes it. Terms.