Qastor vs CircumFlight

Qastor is a professional marine navigation and pilotage tool for maritime pilots. It combines high-precision positioning, live AIS traffic, and detailed nautical charts to support safe passage through harbors, ports, and confined waters. Built for the demands of real-time pilotage, Qastor gives you the situational awareness you need, accurate vessel position and heading, under-keel clearance, predicted tracks, and berth approach information, all on a portable display you can bring aboard any ship. Key features: Real-time AIS display of surrounding vessel traffic High-accuracy GPS positioning and heading Detailed nautical charts with depth and tidal information Docking and berth approach support Route and passage planning Works offline, independent of the ship's own systems Trusted by marine pilots for navigation in some of the world's busiest ports and waterways.

CircumFlight is an electronic flight bag supplement for general-aviation pilots: current FAA charts, approach plates, live weather and airspace on a fast moving map, with tools for planning the flight and reviewing it afterward. CHARTS AND PLATES • VFR sectional and IFR chart tiles for the continental US, downloaded by region for use without a connection • Georeferenced instrument approach plates with own-ship position • Airport diagrams, runway figures and pattern indicators • Airport detail with frequencies, runways, services and NOTAMs WEATHER * 3D tropical weather view and storm models. • NEXRAD radar with playback and a scrubber, storm cells and echo tops • Lightning, winds aloft, up to 48 hour forecast radar, echo tops and animated winds • TFRs, special-use airspace and obstacle lighting on the map IN FLIGHT • Moving map with terrain, an HSI and a synthetic-vision view with augmented reality • Route planning with per-leg details and an active-leg indicator • ADS-B traffic and weather from a compatible ADS-B receiver (Stratus Open, Stratux) • Automatic flight logging in the background, with playback of every flight PLANNING AND SAFETY • Aircraft weight-and-balance envelope COMMUNITY • Airport chat, user profiles with photos and flight sharing, behind a profile you activate when you want it FREE WITH SIGN IN WITH APPLE Base maps, the initial aviation database and the current radar frame. Chart, plate and data updates, full weather and flight tools are part of a membership. FOUNDING MEMBERSHIP For a limited introductory period, membership is offered at $24.99 per 6 months as a Founding Membership. Subscribe now and your price is locked for as long as your membership remains active without lapsing, and you receive every feature of the Pro individual membership as new features are added, at no change in price. Includes a one-week free trial for new subscribers on the US storefront. Membership is an auto-renewable subscription billed to your Apple ID; it renews unless cancelled at least 24 hours before the end of the current period, and can be managed in your App Store account settings. CircumFlight is a planning and situational-awareness aid. It is not a certified navigation or weather system and does not replace the equipment installed in your aircraft or the official sources of aeronautical information. Privacy policy: https://www.circumflight.com/privacy Terms of use: shown in the app under Terms of Use Support: https://www.circumflight.com/support