A2Plus vs HamSat

A2+ is an application dedicated to the measurement of land area, perimeter and distance. The moderate grounds can be situated all over the world. A2+ can measure and display the surface and the perimeter of several land on the same plan with intermediate distances. The measurement can be displayed in feet, Inch, Yard or Feet. The application displays the French land registry superimposed on the map. Thus, the measurement accuracy of the plots is greatly improved (useful for a geometrician). A2+ can save plans, edit them and export them via e-mail with the format "KML" (for use with software like Google Earth, Google Maps, World Wind, Sketchup ...) and "DXF" (AutoCAD). The application allows you to import KML files and view fully customizable and cumulative WMS layers. Multilingual: English, French, German, Spanish, Italian, Portuguese, Japanese. A2+ has 4 ways of functioning: - GPS: The user is located on the field. He then confirms a succession of points describing at best the ground thanks to the position supplied by the GPS. - GPS AUTO : The user is located on the field. The application automatically takes the points with a regular time interval. Just move yourself along the ground so that its outline is drawn. The time interval is adjustable from 5 to 120 seconds. The automatic mode can be stopped and restarted at any time. - Manual: the user seizes points manually without moving by finding a way on the map. - Mixed: the user is on the ground and seizes points via the GPS, then can add it manually (for difficult access for example). The calculation of the surface is effected and displayed at each input. The result can be stated in m2 square feet, square yard, are, ha. Features : - Automatic recording of points with a regular time interval. - Measurement of several surfaces on the same plane. - Measure of cumulative distance. - Viewing the perimeter and intermediate distances. - Viewing a compass and altitude for better geolocation. - Points Informations: At any time, the user can know the seized coordinates of the seized points - Movement of the seized points: Every seized point can be moved with the finger to adjust its position. - Deleting a point: A point can be deleted individually. - Manually inserting a new point between two existing points: You can insert a new point between two existing points to refine the tracing of the plan. - Ability to manually enter the coordinates of a point. - Display of the surface: The surface is calculated and shown in every new seized point. - Archiving of the measures: Every moderate ground can be archived with a personalized name. Every archive can be opened again and then again be edited. - GPS reception indicator. - GPS Information: The button "information" allows to show the information of localization of the GPS. - Export plans to KML and DXF format : To export a plan with KML and DXF format, you must go to the backup list and press the icon 'email'. A2+ adds, in the e-mail, the plan attached. You simply write the recipient and send the message. - Import KML file. - Fully customizable and cumulative WMS layer visualization. - Function "undo" and "redo" to undo or redo the last action performed. - Search address to center the map. - Several options of measures are available: Unit of measure: meter, inch, feet and yards. Unity of measure of the surface: m2 square feet, square yard, are, ha. Type of map: Map, Satellite, Hybrid (map + satellite). Other map : OSM, MapBox, Google Map. Custom WMS layers (cumulative). Accuracy in GPS mode: 100m, 10m, 5m. This option allows to forbid the seizure of a point if the precision of the GPS is lower than the instruction. Possibility to display the French Land registry with overlay on the map.

HamSat is the satellite tracker built for amateur radio operators — with an Apple Watch companion on your wrist and, new in 2.1, a sked planner that finds the passes you and another operator can work together. NEW — SKED PLANNER (Pro) • Plan a contact, not just a pass: enter another operator's grid square and find every window where a satellite sees you both • Set a minimum elevation for each end of the link — a window only counts if it's workable at both stations • One tap adds the sked to your calendar with the overlap times, a 10-minute reminder, and the radio setup PLAN AHEAD • Pass predictions up to 7 days out • Add any pass to Apple Calendar — times, reminder, and frequencies in the notes. HamSat never reads your calendar. • Choose your pass-alert tone — including a CW "HI" in Morse APPLE WATCH (Pro) • Your next favorite pass on your wrist: live azimuth, elevation, Doppler-corrected frequencies, and a countdown to AOS • Guided wrist-aim — follow an arrow straight to the satellite and feel a haptic tap the instant you're locked on. Aim your antenna without looking at a screen, hands free for the radio. • Propagated on the watch itself, so it keeps tracking even when your phone is out of range PASS TRACKING • Live sky dome with the satellite's arc and a glyph riding it in real time • Fullscreen Live tracker — big AZ/EL, Doppler-corrected frequencies, landscape split-pane • Aim mode uses your phone's compass to show where you're pointing — no forced figure-8 calibration, just point and go • Apple Maps ground track with horizon footprint OPERATING DURING A PASS • Doppler-corrected RX (and TX for SSB/linear) dial frequencies, updated every second • 10-minute and AOS notifications that deep-link straight to the pass • Live Activity + Dynamic Island on the lock screen, elevation and azimuth ticking live • Bell badge on any pass you've set an alert for ROVER PROOF PHOTOS • Stamp a photo at your site with your callsign, grid, satellite, and UTC time — proof of where you were on the air • Fresh photo or one from your library; share to X, Messages, AirDrop — or submit for the AMSAT Rover Award ALWAYS OVERHEAD (free) • Lists any geostationary satellite in your sky — QO-100 (Es'hail 2) for Europe, Africa, and the Middle East • "Find it in the sky" — point your phone and check your line-of-sight to the bird is clear • No Pro required for geostationary satellites SATELLITE CATALOG • Friendly designations everywhere — SO-50, AO-91, RS-44, JO-97 — with launch names as subtitles • Search by name or NORAD ID • Curated radio data for the most-worked birds, plus live SatNOGS for the long tail — kept fresh by HamSat's catalog service • Filter by mode (FM, linear, beacon, data, telemetry) ACCURATE & OFFLINE • Full SGP4 propagation on-device — the model the pros use, so times and positions match apps like ISS Detector • Works completely offline — every pass, sky dome, ground track, and Doppler computed locally. No API keys, no rate limits. • Always-fresh orbital data via HamSat's catalog service, with direct CelesTrak/AMSAT fallback — or pin a source • Settings shows how fresh your orbital data is PRIVACY-FIRST • Your location stays on-device — nothing about you is sent to any server • Orbital data from public sources (CelesTrak, AMSAT, SatNOGS) • No accounts, no tracking, no ads HamSat Pro — the field operator's toolkit • Sked planner — mutual passes with any partner grid • Apple Watch tracking & guided wrist-aim • Fullscreen Live tracker with second-by-second Doppler (landscape split-pane) • Live in-pass Doppler — corrected RX/TX at AOS, max, and LOS • Overhead-now live tracker for your favorites • Unlimited scheduled alerts — not just three • Shareable Rover proof photos One-time purchase, no subscription. 73 — and good DX!