G FORCE vs APEX Pro (Legacy)
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
G FORCE
Transform your iPhone into a vehicle G-force meter to measure acceleration, braking, and cornering. Features real-time displays, adjustable alerts, and peak hold functionality for detailed analysis.
- Real-time G-force display
- Adjustable audio alerts
- Peak hold monitoring
- Quick calibration
- Session maximum records
- Customizable gauge scales
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G FORCE makes your iPhone or iPod Touch a handy vehicle G-Force meter. A nice looking enhancement to the dash of your car, too. Quantify the G-Force you experience in the vehicle (e.g. during acceleration, braking, drifting, cornering etc) or perform a quick dyno. Its unique "Sound Alert feature" provides alert sound when the g-value exceeded a user selected limit. FEATURES (1) "Quick & Simple Calibration" Simply press the start button and G FORCE takes only about 0.5 seconds to calibrate to your iPhone's tilt angle. (2) "Real Time Display" Two "Linear Gauges" and two "Digital Displays" show the real time lateral (e.g. cornering) and longitudinal (acceleration, braking) G values. (3) "Peak Hold" Adjustable "Peak Hold Duration" helps you monitor peak values. (4) "Graphical Peak Hold Indicators" Distinctive graphical peak hold indicator makes observing peak values a quick glance. (5) "Adjustable Audio Alert" Provides alert sound when the G-Forces exceeded a user preset "threshold". (6) "Adjustable Gauge Scale" "log Scale" and "Linear Scale" helps you utilize the "Linear Gauges" for different conditions. e.g. Use log Scale in "mild" acceleration conditions or use "Linear Scale" in "aggressive" acceleration conditions. (7) "Session Maximum Records" Shows all the maximum G values in the current session. (8) "Large Operation Buttons" Facilitates quick and easy operation. (9) "Theme Switch" Switch between the Classic and Graphite Theme to suit your taste. With its nice interface and unique features, you would like G FORCE even though you may have already got other g-meters like dynolicious or even a hardware equipment.
APEX Pro (Legacy)
This app provides powerful data acquisition for motorsports, offering real-time feedback and extensive post-driving analysis. It helps drivers improve their skills by modeling track and vehicle capabilities, with features for both hardware users and a standalone lap timer.
- Real-time LED feedback
- Extensive post-session analysis
- Machine learning track modeling
- Lap Timer Plus subscription
- OBDII engine data and diagnostics
- GPS lap timing and analysis
- Crew View live feed
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APEX Pro is powerful, cost effective, data acquisition for motorsports. APEX Pro's mission is to lower the barrier to quality data acquisition by providing simple to use standalone hardware, controlled by your Apple/ iOS device, and the NEW APEX Pro Lap Timer feature that does not require hardware. The APEX Pro Hardware uses a 9 Axis IMU, a 10HZ GPS and machine learning to model the track and your vehicle's capabilities. APEX provides real-time feedback via LED's while in car and extensive information on the app post driving session. Who is APEX Pro for? APEX helps drivers learn to drive the car at the limit of the tire's grip. Whether you are a racer, track day driver, or autocrosser, that is a valuable skill to have. It is a Grip Gauge that shows you where extra grip is being left on the table. APEX Pro customers participate in all types of four wheeled motorsports: Road Racing, Autocross, Rally, Track Days/ HPDE, Time Attack. What does APEX offer with the APEX Pro Hardware? 10 x GPS accuracy and frequency of the smartphone GPS, APEX’s proprietary machine learning model (APEX Score) for real-time, in-car analysis, MPH/KPH selection, Crew View: Access Live Feed posting of User Records, Ability to post laps to “Top Ten” record board, Extensive post-session analysis, Overlay APEX Score, Speed, Lat G, Long G, OBDII channels (with OBDII hardware), Yaw Rate on GPS image, histogram plots, X,Y chart, and Scatterplot, Lap Replay, Interactive Speedometer, Light Bar replay, AirDrop Data sharing, Overlay laps from different days or sessions at the same track. Gain/ Loss Time overlay on GPS Satellite image. What does the App offer with APEX Pro OBDII? For everyday use: Gage cluster for live engine data. Check engine light (MIL) diagnostic codes. Zero-to-sixty MPH timer. For racing: High quality GPS Lap Timing with Phone GPS, Access to Crew View Live feed, GPS Satellite image overlay with heat maps showing Speed and Long. G, Speed trace and histogram plots for further analysis, OBDII data channels recorded, Lap replay function with interactive speedometer, AirDrop data sharing for data overlay with other drivers on the same track, Auto track selection at hundreds of official tracks around the world. Toggle “Enable Phone GPS Logging” to use the app with no APEX Pro Hardware. What does the App offer with 'Lap Timer Plus' subscription? After your first lap on track, the timer can be used to show your predicted lap time or the delta between your current lap and your best so far. This allows competitive drivers to quickly identify the effect of changes in the driving line or the effect of traffic. For review, the track can be split into sectors and a theoretical best lap calculated to set goals for your next session. Video can be recorded during a driving session and then rendered with data overlays after the session. Please visit www.apextrackcoach.com for detailed information, FAQ’s / documentation, videos and more. Follow @officialapexpro on Facebook and Instagram!
Screenshots
Verdict
The clearest difference is price: APEX Pro (Legacy) at Free against G FORCE's $2.99. APEX Pro (Legacy) also leads on review sentiment (95% vs 60%) and ratings volume (120 vs 1). G FORCE's advantage is in-app purchases (none vs 4) and chart position (#169 vs unranked). On rating, 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
APEX Pro (Legacy) is free to download; G FORCE costs $2.99 up front. APEX Pro (Legacy) sells 4 in-app purchases, starting at $4.99 per month. G FORCE asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for G FORCE against 4.9 for APEX Pro (Legacy). That said, the two scores are not equally well evidenced: APEX Pro (Legacy) has 120 ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 60% of G FORCE's written reviews are positive against 95% of APEX Pro (Legacy)'s.
G FORCE ships an update monthly, APEX Pro (Legacy) every 5 weeks. The most recent releases landed on October 31, 2026 and November 3, 2026 respectively.
| Parameter | G FORCE | APEX Pro (Legacy) |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 5.0 (1 ratings) — better | 4.9 (120 ratings) |
| Positive reviews | 60.0% of reviews | 95.0% of reviews — better |
| Number of ratings | 1 | 120 — better |
| Update frequency | Monthly — better | Every 5 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Best chart rank | #169 — better | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 6.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 3 MB | 87 MB |
| Age rating | 4+ | 4+ |
| Developer | Y Lau | Apex Pro LLC |
Customer experience
G FORCE
APEX Pro (Legacy)
In-app purchases
G FORCE
No in-app purchases
APEX Pro (Legacy)
- Predictive$4.991 Month
- Video1 Month trial$9.991 Month
- Telemetry Streaming$14.991 Month
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- LTP Membership$98.991 Year









