SkewTLogPro vs WingCalc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SkewTLogPro
Access powerful skew-t log-p charts with one touch. View atmospheric data like temperature, dew point, and winds aloft at various altitudes. Supports current GPS location, airport codes, or lat/lon for detailed weather analysis.
- One-touch skew-t log-p chart access
- View charts by GPS, airport ID, or lat/lon
- Visual indication of temperature, dew point, winds aloft
- Support for International Airport ICAO codes
- View charts along your route
- Save charts for offline use
- Scroll forward/backward for past and forecast charts
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SkewTLogPro gives you one-touch access to powerful skew-t log-p charts. View charts using your current GPS location, airport ID code or lat/lon. Each skew-t log-p chart provides a visual indication of temperature, dew point, winds aloft, and wind speed at various altitudes, as well as Current Radar, Airmets, Sigmets, and SkewT data charted, filtered by altitude. FEATURES: • NEW! View all Sigmet/Airmet on a map and filter by altitude • NEW! View SkewT data charted on a map with altitude filtering, shows potential warnings of Icing, Wind, and Visibility • Ability to view the lifted parcel line • Support for International Airport ICAO codes • View charts along your route using 'View Route' • Support for GFS for all locations outside the continental United States (Option in Settings) • View many values such as CAPE, LI, LCL, and many other options through settings • Save charts for offline use • View Skew T Log soundings by touching a location on a map • View skew-t log(p) charts using your current GPS location, airport identifier or latitude and longitude. • Scroll forward and backward to view past and forecast charts. • History list allows easy access to previously viewed locations. • Select how many previous and forecast hours are charted • Drag on the graph to view each point value • Double-tap to zoom in for more detail on the soundings. • Great for aviators, glider pilots and weather enthusiasts. An annual subscription is required to access these graphs and to use SkewTLogPro for $12.99 per year. Cancel anytime. Please view the End User License Agreement here: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
WingCalc
This aviation calculator provides essential flight calculations for pilots, from preflight planning to in-flight decisions. It offers instant results for density altitude, runway wind components, and navigation planning, with a dashboard for all flight parameters.
- Density altitude and pressure altitude calculations
- Runway wind component determination
- Navigation planning with wind correction
- Flight parameters dashboard
- Live GPS with real-time coordinates
- Automatic magnetic variation detection
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WingCalc - Aviation Calculator Essential flight calculations for pilots, right in your pocket. WingCalc is the aviation calculator companion designed for student pilots, private pilots, and flight enthusiasts. Get instant results for the calculations you need most - from preflight planning to in-flight decisions. DENSITY ALTITUDE Calculate density altitude and pressure altitude with real-time performance warnings. Know when conditions will affect your aircraft's climb rate, takeoff roll, and overall performance. RUNWAY WIND Instantly determine headwind and crosswind components for any runway. Enter wind direction, speed, and runway heading to get the numbers you need for safe takeoffs and landings. NAVIGATION Plan your cross-country flights with wind correction angle, true heading, magnetic heading, compass heading, and ground speed calculations. Optional compass deviation input for precise navigation. DASHBOARD View all your flight parameters at a glance. WCA, headings, ground speed, wind components, and altitude calculations - all in one place. PRO FEATURES - Live GPS: Real-time coordinates, altitude, ground speed, and heading - Automatic magnetic variation detection based on your location - Ad-free experience Perfect for flight training, cross-country planning, or quick calculations on the ramp. Simple, fast, and reliable.
Screenshots
Verdict
The clearest difference is rating: SkewTLogPro at 2.7 against WingCalc's 2.0. SkewTLogPro also leads on ratings volume (97 vs 1) and review sentiment (47% vs 33%). WingCalc's advantage is monetization model (free with in-app purchases vs subscription) and update cadence (weekly vs every 2 months). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. SkewTLogPro sells 1 in-app purchase, starting at $12.99 per year and WingCalc sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
SkewTLogPro holds the better App Store score, 2.7 against 2.0. That said, the two scores are not equally well evidenced: SkewTLogPro has 97 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 47% of SkewTLogPro's written reviews are positive against 33% of WingCalc's.
SkewTLogPro ships an update every 2 months, WingCalc weekly. The most recent releases landed on September 23, 2026 and June 1, 2026 respectively.
| Parameter | SkewTLogPro | WingCalc |
|---|---|---|
| Price | Free | Free |
| Rating | 2.7 (97 ratings) — better | 2.0 (1 ratings) |
| Positive reviews | 46.7% of reviews — better | 33.3% of reviews |
| Number of ratings | 97 — better | 1 |
| Update frequency | Every 2 months | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Subscription | Free with in-app purchases — better |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 79 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Chad Sandstedt | App4Life Sweden AB |
Customer experience
SkewTLogPro
WingCalc
Bugs and requests
SkewTLogPro
Reported bugs
7 issues- App crashes when selecting locations
- Data timeout errors after updates
- App becomes non-functional when data source API changes
- Slow performance and lag when flipping through hourly forecasts on iPad
- Crashes when manually changing parameters on iPad
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- Graphics appear coarse and need sharpening
- Resolution doesn't refresh when zooming in
Requested features
13 requests- Interactive charts like rucsoundings with exact value selection
- Extended forecast range beyond 18 hours using GFS data
- Remember last input locations for route planning
- Display CAPE, LFC, EL, and adiabatic lines graphically on chart
- Show weather model being used in the app
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- Better orientation support for iPad use in landscape mode
- More detailed in-app tutorial on reading Skew-T charts
- Integration with ForeFlight for in-flight real-time data
- Rawinsonde location map for station selection
- Display valid times and data source station on charts
- Expansion of coverage outside CONUS
- Higher resolution graphics when zoomed in
- Ability to plot current altitude and temperature like online version
WingCalc
Not enough reviews yet to summarise bugs or requests.
In-app purchases
SkewTLogPro
- Annual Subscription7 Days trial$12.991 Year
WingCalc
- WingCalc Pro$0.99
Questions
Is SkewTLogPro free?
Is WingCalc free?
Which has better reviews, SkewTLogPro or WingCalc?
Do SkewTLogPro or WingCalc have ads?
Which is updated more often, SkewTLogPro or WingCalc?
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