Comparison

Xavion vs ParkingDrop

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Xavion

This app provides critical in-flight guidance for engine failures, calculating safe glide routes to airports. It also offers 3D instrument approaches, tracks aircraft and their wake turbulence, and displays real-time weather data. Additionally, it assists with pre-flight planning, weight and balance calculations, and takeoff performance analysis.

Highlights
  • Engine-out glide path calculation
  • 3D instrument approaches
  • ADS-B aircraft and wake turbulence tracking
  • Real-time ADS-B weather display
  • Weight and balance calculations
  • Takeoff distance estimation
  • Enroute time and fuel burn estimation
Features
Read full description

In flight, Xavion constantly imagines engine-failed glides to every runway in gliding range, and then shows you the safest-possible route as a Highway-In-The-Sky to take to an airport in the event of engine failure. This, finally, gives you guidance after an engine failure that is based on energy-management all the way down. Xavion also has instrument approaches in 3-D for the United States, so you can simply select any approach and then fly through the hoops to fly it! As well, Xavion tracks other airplanes via ADS-B, and memorizes their location to track their WAKE TURBULENCE, moving the wake turbulence down and with the wind over time, showing the wake turbulence as little spiraling tornados. Finally, an App that tracks and shows you the wake turbulence of other airplanes. As well, Xavion gets ADS-B weather if you have a portable receiver, and displays it, including the new icing, turbulence, and lightning products. Xavion also gets METARS and winds aloft from the internet if you have a WIFI or cell signal to help you plan before a flight! Also, Xavion checks your weight and balance, and even estimates your takeoff distance and compares that to the length of the runway that you are about to take off on to warn you if the available runway length from your current location is marginal for a safe take-off. Also, Xavion estimates time and fuel burn at all different altitudes to any destination, showing you the time and fuel burn required for each altitude enroute, so you can pick the best altitude. All USA VFR and IFR charts and plates are included with base subscription. Terms of use and Privacy Policy can be found at: http://xavion.com/xavion-privacy-policy-and-terms-of-service/ Continued use of GPS running in the background can dramatically decrease battery life.

About

ParkingDrop

Features
Read full description

ParkingDrop helps drivers find available parking spots, save their parked car location, and share the parking spots they are leaving with others in real time. Features: • Find nearby parking spots on the map. • Save your parked car location and easily navigate back to it. • Share the parking spot you're leaving. • See when a parking spot is expected to become available. • Navigate directly to a selected parking spot. • Available in multiple languages. • Fast, simple, and privacy-focused. ParkingDrop helps reduce the time spent searching for parking, saves fuel, and makes city driving easier through community participation.

Screenshots

Xavion4 screens
ParkingDrop4 screens

Verdict

The call

The clearest difference is in-app purchases: ParkingDrop at none against Xavion's 2. Xavion's advantage is iOS requirement (15.0 vs 17.0). On price, update cadence, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Xavion sells 2 in-app purchases, starting at $9.99 per month. ParkingDrop asks for nothing beyond the download.

UpkeepUpdate frequency

Xavion ships an update every 4 days, ParkingDrop every 8 days. The most recent releases landed on October 20, 2026 and October 15, 2026 respectively.

Scorecard2 real differences · 8 level
Xavion versus ParkingDrop: the parameters behind the verdict, then further details
ParameterXavionParkingDrop
PriceFreeFree
Rating4.3 (100 ratings) — better—
Positive reviews69.5% of reviews—
Number of ratings100 — better—
Update frequencyEvery 4 days — betterEvery 8 days
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.0
Further details — not scored
Size3.5 GB16 MB
Age rating4+4+
DeveloperX-Avionics, LLCFurkan Caliskan

Bugs and requests

Xavion

Reported bugs

12 issues
  • App crashes when adding new airports
  • Flight recording stops during touch-and-go landings
  • Runway guidance sometimes hidden by terrain or trees
  • Approach procedure turn opposite of plate indication
  • App freezes entire iPad when trial period expires
Show 7 more
  • Incompatibility with X-Plane 11 connection
  • Ghost hijacking of other apps after trial expiration
  • App fails to open after updates
  • Display issues on iPad mini 6
  • Inconsistent airport database with generic runway lengths outside USA
  • Altimeter takes QNH from distant airport causing altitude errors
  • App behaves like virus during trial period

Requested features

19 requests
  • Support for EU, UK, and international regions
  • Canadian VFR charts and airport data
  • iPhone X and newer device compatibility
  • Custom waypoint addition for VFR flight plans
  • Multiple flight plan legs support
Show 14 more
  • Manual altimeter adjustment capability
  • Negative coordinate input support
  • Integration with Seattle Avionics existing subscriptions
  • Fixed-pitch propeller glide calculations
  • 3D airspace visualization
  • Cloud storage for backup and device transfer
  • Runway-specific lateral guidance (not just airport center)
  • User waypoint database
  • Improved user interface design
  • Lock runway feature to prevent approach switching
  • Better terrain view visualization
  • Stratus/Scout GPS receiver support
  • Free chart integration from FAA
  • Certified panel replacement option

ParkingDrop

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

Xavion

Subscriptions2
  • Airport, Chart, and Plate Data$9.991 Month
  • Airport, Chart, and Plate Data$99.991 Year
None

ParkingDrop

No in-app purchases

Questions

Is Xavion free?
Xavion is free to download, with in-app purchases available.
Is ParkingDrop free?
ParkingDrop is free to download, with no in-app purchases.
Do Xavion or ParkingDrop have ads?
Neither Xavion nor ParkingDrop shows ads.
Which is updated more often, Xavion or ParkingDrop?
Xavion ships an update every 4 days, and ParkingDrop every 8 days. Most recently, Xavion was updated on October 20, 2026 and ParkingDrop on October 15, 2026.

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