SkyLogger vs Vario One

SkyLogger is a program for obtaining and storing flight data. The program is especially adapted for the usage by glider, hangglider and paraglider pilots. 
SkyLogger obtains the geodetic positions of the pilot during the flight and stores the data. Furthermore, the pilot is able to see during the flight the elapsed time, the distance to the take-off as well as the current ground speed and climb rate. A compass rose is indicating the current flight direction.
 For competitions the pilot's and the aircraft's name, the aircraft's ID and the to be flown route can be entered.
 During the flight the direction and distance to the next waypoint are shown on the display. After finishing the flight the stored geodetic data together with the data for the competition can be converted into the common IGC file format. Additionally, also other popular formats like GPX and KML are supported. The created files are stored on the iPhone or can be sent to servers or other computers. SkyLogger supports besides others the following features: - control by Apple Watch; - main data visualization on Apple Watch; - cockpit / instrument view; - 2D & 3D flight data visualization; - downloadable map data; - large and individually adaptable instruments on a moving map allow best viewing comfort; - north or in flight direction orientation of moving map; - live tracking support for Leonardo or Vgps servers - visualization of previously flown flights as track traces on moving map; - visualization of airspaces with user defined colors; - instrument showing the distance and direction to the closest airspace; - 3 axis acceleration measurements; - tracked flights are stored in highly efficient internal database; - default flight parameters can be stored and retrieved to make flight information entering for competitions easier; - SkyLoggerXXL supports common file formats like IGC, CSV, GPX and KML; - IGC files created by SkyLoggerXXL are OLC conform and can directly be sent to Leonardo, XCCup, XContest and XC globe based OLC servers; - calculation of XC points for FAI triangle, triangle and free distance over 5 points; - XC analysis (determination of FAI triangle areas); - printing of flightbooks, flight information and statistics - all diagrams, maps or charts can either be e-mailed or copied for incorporation into other apps; - integration of SkyView database for exchanging waypoints; - support of FlyNet accessories; - support of SensBox; - weather data history of selected weather stations for the last 48 hours; - online wind speed and direction visualization on maps for selected weather stations; - visualization of hotspots; - visualization of regions with thermals; - visualization of climb rate traces; - and much much more! Warning: Continued use of GPS running in the background can dramatically decrease battery life.

VARIO One – Your smart variometer for iPhone and Apple Watch. As precise as a pro vario. As simple as an app. No extra hardware. VARIO One combines a pressure sensor, an accelerometer and GPS into a full-featured variometer — right on your iPhone and Apple Watch. Both apps work independently and signal lift with acoustic beeps. Optionally connect an external Bluetooth vario for even more precision. Try all features free for 14 days. VARIOMETER - Instantly audible lift by combining pressure and acceleration sensors. - Internal barometer (baro + IMU fusion) — a calmer, more precise signal. - Display of altitude, speed and glide ratio. - Barometric altitude with QNH — set directly on the flight screen. - Climb tone threshold freely configurable (down to −0.5 m/s). - Rotating wind direction indicator. FLIGHT RECORDING - Automatic recording as GPS and IGC track. - Digital logbook with map view and statistics. - Automatic upload to DHV-XC and XContest. - Automatic take-off and landing detection. MAP - Airspaces downloadable per country or importable as OpenAir files. - Current wind from thousands of weather stations. - Take-off and landing sites — permanently free to view. AIRSPACE MAP & ALERTS Download airspace maps for any country right in the app from OpenAIP. Or import your own OpenAir files (classic as well as Naviter 1.0/2.0). All airspaces are shown as a vector map; tap for details, altitude profile and legend. As you approach, VARIO One warns you with a voice announcement and a configurable lead time — including a snooze function and automatic escalation. REAL-TIME AIR TRAFFIC WITH SAFESKY See nearby aircraft — paragliders, hang gliders, sailplanes, helicopters — using SafeSky, including other SafeSky users on the map. ADS-B, FLARM, OGN, PilotAware, and other supported traffic sources — all in one real-time view. Coverage depends on the availability of compatible transmitters and network reception. BUDDY FLYING – FLY TOGETHER, EVERYONE IN VIEW With Buddy Flying you see your flying partners live on the map — perfect for a shared cross-country flight or a day at your local mountain. One person creates a group and shares the code, the others join. As soon as "Sharing" is active, you all see each other in real time. For each buddy you see position with distance and bearing, absolute altitude and altitude relative to you, current climb and an 8-second average, plus speed. When a buddy is climbing, you see it in their climb rate — and know where the thermal is. A colour scale shows how their climb compares to yours. EXTERNAL BLUETOOTH VARIOS Connect your device wirelessly to use it as your vario signal source: BlueFly Vario (multiple protocols), Mipfly MipBipX & MipTrack, Stodeus BlueBip & UltraBip, Skytraxx (BLE). Connect any time from the settings — no onboarding needed. THERMAL ASSISTANT Your flight track is coloured live by climb and sink values — so you instantly see where the best thermal is in the turn. The app automatically detects circling and switches to the thermal view. Including wind direction and speed. IMPORT FLIGHTS Import previously flown flights as GPX or IGC files straight into the logbook — via the + button or via "Open with" from the Files app. APPLE WATCH - Standalone vario with precise pressure sensors. - Ideal for hike & fly, as a backup or when there's no room in the cockpit. - Flight recording in GPX and IGC format. New features are added regularly. Try everything free for 14 days. Take-off and landing sites remain free afterwards too. The subscription renews automatically and can be cancelled any time.