Shipline
Seller shipping calculator
USPS, UPS, FedEx - side-by-side in seconds. No account, no scraping. Built for solo sellers who pack their own. Now with Profit Lens, so you can see whether a sale actually makes money before you ship it.
What it does
Compare baked-in USPS, UPS, and FedEx rate estimates from parcel weight, dimensions, and ZIP zones.
The Results screen now shows whether you'll actually make money on a sale. From the cheapest computed rate plus your saved selling costs - item cost, marketplace fee, payment fee, packaging - it gives you the free-shipping price threshold, your break-even price, and a slider to see your margin at any sale price. All on-device, with Etsy, eBay, and Mercari fee presets.
Saved parcels, quote history, default origin ZIP, units, and preferences are stored locally in UserDefaults. No developer backend is included.
$0.99 paid app. No subscription is required.