This update sharpens the interface: the iPad layout now uses a centered, comfortable reading width instead of stretching edge to edge, plus small display fixes. iPhone is unchanged.

Shiplines 2.0 — a pro upgrade for sellers, still 100% offline. • Service Verdict: one clear "best service" recommendation across USPS, UPS, and FedEx, with the reason and the runner-up. • Target-Margin Pricer: price for the margin or markup you choose (20/30/40/keystone) — not just break-even. • Box Optimizer: spot dim-weight overage and the exact volume to shed to bill on real weight. • Packing Advisor: every flat-rate box your parcel fits, snuggest-first, with headroom. • Zone Spread: the cheapest cost to all 9 zones, for setting one flat shipping charge. No account, no network — every rate is computed on your device.

Profit Lens: 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, no network. Set your costs under Settings → Profit Lens → Selling costs (Etsy/eBay/Mercari presets included), or tap "Edit fees" right on the card. Plus five reliability fixes: surcharge estimates now match the actual shipping zone, Compare requires complete

Version 1.1 adds four substantive new features: Cubic Pricing Advisor — Many small, dense packages qualify for USPS cubic pricing, which bills by box volume instead of weight and can save $2–12 per shipment. After every calculation, Shipline now checks whether your parcel is eligible (≤ 20 lb, no side over 18 in, volume ≤ 1 cu ft for Ground Advantage or ≤ 0.5 cu ft for Priority Mail) and shows the cubic rate and exact savings when it beats the weight-based rate. Retail GA cubic rates are from the USPS Notice 123 effective April 26, 2026 and require no online account. Flat Rate Advisor — After every calculation, Shipline now checks whether a USPS flat rate envelope or box is cheaper than the zone-based Priority Mail price for that parcel. If the item physically fits inside a flat rate container and the price beats the computed rate, the alternative is shown directly on the results screen with exact dimensions and the dollar savings. Based on the USPS retail price schedule effective April 26, 2026. Surcharge Risk Warning — UPS and FedEx charge hidden "Additional Handling" and "Large Package" surcharges on parcels that exceed size or weight thresholds — fees that can range from $30 to over $270 and are not included in the base rate table. Shipline now automatically detects when your parcel crosses any of the 2026 trigger thresholds (longest side, second side, length-plus-girth, cubic volume, weight) and displays a visible warning with the triggering reason and an approximate surcharge amount, so you know before you buy the label. Share Quote — A share button on the results screen lets you export the full rate comparison as a plain-text summary for pasting into a message, listing DM, or email. The summary includes all four carrier rates, the cheapest marker, delivery windows, flat rate alternatives, and any cubic pricing savings found.

Version 1.1 adds three substantive new features: Flat Rate Advisor — After every calculation, Shipline now checks whether a USPS flat rate envelope or box is cheaper than the zone-based Priority Mail price for that parcel. If the item physically fits inside a flat rate container and the price beats the computed rate, the alternative is shown directly on the results screen with exact dimensions and the dollar savings. Based on the USPS retail price schedule effective April 26, 2026. Surcharge Risk Warning — UPS and FedEx charge hidden "Additional Handling" and "Large Package" surcharges on parcels that exceed size or weight thresholds — fees that can range from $30 to over $270 and are not included in the base rate table. Shipline now automatically detects when your parcel crosses any of the 2026 trigger thresholds (longest side, second side, length-plus-girth, cubic volume, weight) and displays a visible warning with the triggering reason and an approximate surcharge amount, so you know before you buy the label. Share Quote — A share button on the results screen lets you export the full rate comparison as a plain-text summary for pasting into a message, listing DM, or email. The summary includes all four carrier rates, the cheapest marker, delivery windows, and any flat rate alternatives found.