Comparison

SmoothTrack vs X

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

Head to head
About

SmoothTrack

Enhance your simulation gaming experience with phone-based head and eye tracking. This app allows for intuitive, 6-degrees-of-freedom head movements to control your in-game perspective without any extra hardware. Seamlessly look around cockpits, check blind spots, or zoom in on details with natural head gestures.

Highlights
  • 6DoF head tracking
  • Optional eye tracking
  • No extra hardware required
  • Works with FreeTrack/TrackIR games
  • Customizable view presets
  • Exaggerated head movements for control
Features
Read full description

SmoothTrack 2.0 uses the head and eye tracking AR capabilities of your phone to provide the simplest and best head tracker for 6 degrees-of-freedom head movements in your sim games. ----- "The best new controller on the market." - Charlie Hall, Polygon Customer reviews: "SmoothTrack just works. Less than 5 minutes to install, setup and fly. Love not being tethered to my desk! 5 stars!!" "This worked perfectly and way better than expected! Totally enhanced my experience with MFS 2020!" --- It's a near magical experience to seamlessly slightly move your head and have your game perspective immediately play along (the movements in the game are exaggerated so that you only have to make slight movements of your head to control the camera). Additionally, since version 2, your eyes are also optionally tracked and will nudge the camera based on where you're glancing on screen! - Simply lean forward to get a closer look at your Flight Simulator cockpit! - Look a bit up to see the overhead panel of your A320! - Simply shift your head a bit to the right to see the direction of the space station you're approaching in Elite: Dangerous! - Look a bit left before a hard left turn in Euro Truck Simulator 2! No headset or extra equipment of any kind is required! Simply set up your device so that it can see your face. Using simple camera gestures, you can shift your perspective in-game. Also, if you want, you can store views (say, a copilot angle, or a cockpit closeup) as Quick Views for easy access later. Your head movements are slightly exaggerated which enables you to look out of a cockpit side window with just a slight movement of your head to the left. Any game that supports the FreeTrack or TrackIR protocol will work with this, including: - Microsoft Flight Simulator - Microsoft FSX - DCS World - Elite: Dangerous - IL2: Sturmovik - Euro Truck Simulator 2 - Kerbal Space Program - ...and many, many others! Email and Discord support is provided if there are any issues (or if you have any ideas for new features!).

About

X

Control your desktop flight simulator from your mobile device. Connect wirelessly over your local network to manage X-Plane 12 with pro-level precision. Experience a new way to interact with your flight simulation.

Highlights
  • Local LAN control
  • X-Plane 12 integration
  • Pro-level precision
  • Mobile device interface
  • Wireless connectivity
Features
Read full description

Run X-Plane 12 for desktop Mac, Windows or Linux on your local LAN. Run this App on your iPad or iPhone on the same LAN! Choose the copy of X-Plane you want to control on the opening screen and viola: You've got Pro-Level control of X-Plane 12!

Screenshots

SmoothTrack4 screens
X4 screens

Verdict

The call

The clearest difference is review sentiment: SmoothTrack at 86% against X's 37%. SmoothTrack also leads on rating (4.7 vs 3.6) and ratings volume (250 vs 23). X's advantage is price (Free vs $14.99) and iOS requirement (12.0 vs 26.0). On update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

X is free to download; SmoothTrack costs $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

SmoothTrack holds the better App Store score, 4.7 against 3.6. That said, the two scores are not equally well evidenced: SmoothTrack has 250 ratings behind it against 23, so its average is the more settled of the two. Written reviews point the same way: 86% of SmoothTrack's written reviews are positive against 37% of X's.

UpkeepUpdate frequency

SmoothTrack ships an update every 4 months, X every 5 months. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

Scorecard6 real differences · 4 level
SmoothTrack versus X: the parameters behind the verdict, then further details
ParameterSmoothTrackX
Price$14.99Free — better
Rating4.7 (250 ratings) — better3.6 (23 ratings)
Positive reviews85.7% of reviews — better36.7% of reviews
Number of ratings250 — better23
Update frequencyEvery 4 months — betterEvery 5 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS26.012.0 — better
Further details — not scored
Size3 MB3.0 GB
Age rating4+4+
DeveloperJohn GoeringLaminar Research

Customer experience

SmoothTrack

All ratings250 ratings
Positive90.4%
Neutral2.8%
Negative6.8%
Written reviews266 reviews
Positive85.7%
Neutral4.9%
Negative9.4%

X

All ratings23 ratings
Positive69.6%
Neutral0.0%
Negative30.4%
Written reviews30 reviews
Positive36.7%
Neutral6.7%
Negative56.7%

Bugs and requests

SmoothTrack

Reported bugs

2 issues
  • Tracking issues with certain phone positions
  • Compatibility problems with some devices/OSes

Requested features

3 requests
  • Background mode support
  • Ability to use rear camera
  • Improved UI and customization options

X

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

SmoothTrack

No in-app purchases

None

X

No in-app purchases

Questions

Is SmoothTrack free?
SmoothTrack costs $14.99, with no in-app purchases.
Is X free?
X is free to download, with no in-app purchases.
Which has better reviews, SmoothTrack or X?
SmoothTrack is rated higher. SmoothTrack averages 4.7 out of 5 from 250 ratings, while X averages 3.6 from 23 ratings.
Do SmoothTrack or X have ads?
Neither SmoothTrack nor X shows ads.
Which is updated more often, SmoothTrack or X?
SmoothTrack ships an update every 4 months, and X every 5 months. Most recently, SmoothTrack was updated on October 27, 2026 and X on October 24, 2026.

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