Comparison

XForce vs SmoothSwing

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

Head to head
About

XForce

Control your Varex exhaust system's sound and performance with this app. Adjust valve positions manually, set parameters to trigger changes, or create geofenced zones for automatic adjustments. An optional free account enhances functionality with cloud storage and diagnostics.

Highlights
  • Manual valve position control
  • Preset valve positions (Closed, 25%, 50%, 75%, Open)
  • Matrix mode for parameter-triggered valve changes
  • Geo mode for geofenced valve control
  • Cloud storage for profiles and regions
  • Diagnostic log submission
Features
Read full description

VAREX Smart Box control module for the Varex mufflers is one of XForce Performance Exhausts’ latest patent pending technologies. It brings the ultimate user experience of volume adjustable exhaust to the performance car enthusiasts. Through this technology, our users will be able to have full control of how their Varex exhaust systems sound and perform. This XForce Varex App is the user interface for the Varex Smart Box Control Module. ***This App will work exclusively with the VAREX Smart Box control module.*** This app features: XFORCE accounts: You can now sign up for an optional XFORCE account that will extend the power of your VAREX SMARTBOX. Accounts are 100% free but are not required to continue enjoying your VAREX SMARTBOX. With an XFORCE account, you can unlock these new features: - Store Matrix profiles to the cloud and quickly load them on to your VAREX SMARTBOX. - Store Geo regions to the cloud and quickly load them on to your VAREX SMARTBOX. - Send diagnostic logs straight to your account, for quick and convenient assistance by our support team. - Setup a new VAREX SMARTBOX or new phone in seconds! Just login and quickly load your Matrix and Geo cloud data. - With more to come in the future. Note: The VAREX SMARTBOX continues to be fully operational without an XFORCE account but we highly encourage you to check them out! ● Manual Mode: Manually adjust the valve position of the muffler to certain position/degree. Also features four preset positions which is Closed, 25%, 50%, 75%, Open. ● Matrix Mode: Set vehicle parameters range to trigger the Valve operation. Such vehicle parameter includes Engine RPM, Throttle Position and Vehicle Speed. Slider interface are utilized for the selection of those parameters range/band. Valve preset positions inside or outside the range/band can also be manually selected. ● Geo Mode: Create a geographic circle around an address of interest to trigger the valve to a certain position upon entering the circle. The valve can also be triggered to a certain position upon leaving the geographic circle and even trigger a change to Matrix Mode. VAREX muffler technology: The XForce VAREX muffler utilizes our patented technology to combine both the design of the stock muffler and the performance muffler into one single compact unit. A sophisticated butterfly valve mechanism is implemented to redirect the exhaust gas flow and vary between the two. For higher sound level, the exhaust flows are directed through the opening path and produces maximum power with a robust sound level (or the “sports car note”) and near-zero resistance. Whilst for lower sound level, the exhaust flows are directed through the chambered path (similar design with the stock muffler), and produces minimum sound level that gives you the best in-car comfort. Angle of the valve is also controllable, which can be adjusted to stop at various points between sports mode and silence mode. This gives you further freedom to set the optimal sound level according to your desired preference. The latest VAREX Smart Box Control Module serves as a bridge between the users and the Varex mufflers. Through the App and the Module, the user will be able to fine tune the exhaust sounds and performance levels to suit different occasions and the user’s preferred driving styles.

About

SmoothSwing

This app offers a real-time golf shot tracer that visually tracks your ball's flight path. It also provides advanced GPS features, including club distance assistance and slope-adjusted yardage, to help you play smarter on the course.

Highlights
  • Real-time shot tracer
  • 360 Golf GPS
  • Club Assistant
  • PLAYS LIKE Distance (Slope Adjusted Distance)
  • Elevation Change measurement
Read full description

SmoothSwing • The Only Golf Shot Tracer That Works Like Magic! • The Original 360 Golf GPS ™ ► GOLF SHOT TRACER • World's First Real-Time Golf Shot Tracer! • Must use white color golf balls. • Exposure to direct sunlight on a hot day for a long period of time can eventually cause device to become warm. UNSUPPORTED DEVICES *iPhone8, *iPhone 8 Plus, *iPhone X ► GOLF GPS • Club Assistant Set how far you hit each club in your bag. Every time you zoom in Club Assistant shows you where you should expect the ball to end up for each club (based on the PLAYS LIKE Distance). • PLAYS LIKE Distance PLAYS LIKE Distance provides a measurement which compensates for uphill and downhill shots. (PLAYS LIKE Distance is also known as Slope Adjusted Distance.) • ↑/↓ Elevation Change ↑/↓ Elevation Change provides a measurement of the vertical distance, up or down, from where you are standing to the target. Terms Of Service https://www.smoothswingapp.com/terms-of-service Privacy Policy https://www.smoothswingapp.com/privacy-policy

Screenshots

XForce4 screens
SmoothSwing4 screens

Verdict

The call

The clearest difference is rating: SmoothSwing at 4.8 against XForce's 3.6. SmoothSwing also leads on ads (none vs shown) and ratings volume (12K vs 10). XForce's advantage is in-app purchases (none vs 1) and iOS requirement (11.0 vs 16.0). On price, review sentiment, monetization model 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. SmoothSwing sells 1 one-off in-app purchase. XForce asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

SmoothSwing holds the better App Store score, 4.8 against 3.6. That said, the two scores are not equally well evidenced: SmoothSwing has 12K ratings behind it against 10, so its average is the more settled of the two. Written reviews point the same way: 47% of XForce's written reviews are positive against 50% of SmoothSwing's.

UpkeepUpdate frequency

XForce ships an update every 5 months, SmoothSwing monthly. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.

Scorecard6 real differences · 4 level
XForce versus SmoothSwing: the parameters behind the verdict, then further details
ParameterXForceSmoothSwing
PriceFreeFree
Rating3.6 (10 ratings)4.8 (12K ratings) — better
Positive reviews47.1% of reviews50.2% of reviews — better
Number of ratings1012K — better
Update frequencyEvery 5 monthsMonthly — better
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS11.0 — better16.0
Further details — not scored
Size12 MB106 MB
Age rating4+4+
DeveloperXForceThomas Turnbull

Customer experience

XForce

All ratings9 ratings
Positive66.7%
Neutral11.1%
Negative22.2%
Written reviews17 reviews
Positive47.1%
Neutral41.2%
Negative11.8%

SmoothSwing

All ratings11,294 ratings
Positive96.6%
Neutral1.3%
Negative2.1%
Written reviews277 reviews
Positive50.2%
Neutral8.7%
Negative41.2%

Bugs and requests

XForce

Not enough reviews yet to summarise bugs or requests.

SmoothSwing

Reported bugs

4 issues
  • Shot tracer not working after purchasing pro version
  • GPS and map features not functioning properly
  • App crashing or freezing during use
  • Inability to track certain ball colors

Requested features

4 requests
  • Ability to upload and trace pre-recorded videos
  • Landscape mode support
  • More customization options for the shot tracer
  • Improved range finder with clearer visuals

In-app purchases

None

XForce

No in-app purchases

1 purchases

SmoothSwing

One-time1
  • SmoothSwing Pro$9.99

Questions

Is XForce free?
XForce is free to download, with no in-app purchases.
Is SmoothSwing free?
SmoothSwing is free to download, with in-app purchases available.
Which has better reviews, XForce or SmoothSwing?
SmoothSwing is rated higher. XForce averages 3.6 out of 5 from 10 ratings, while SmoothSwing averages 4.8 from 12K ratings.
Do XForce or SmoothSwing have ads?
XForce shows ads; SmoothSwing does not.
Which is updated more often, XForce or SmoothSwing?
XForce ships an update every 5 months, and SmoothSwing monthly. Most recently, XForce was updated on October 24, 2026 and SmoothSwing on October 29, 2026.

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