Comparison

Lapster Racing vs G

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

Head to head
About

Lapster Racing

Features
Read full description

Lapster turns your RaceBox into a complete lap timer and telemetry system. And if you don't own one yet, your iPhone can time your laps too. RACEBOX — ALL THREE MODELS RaceBox Mini S, RaceBox Micro and RaceBox Pro. Connect over Bluetooth or Wi-Fi, pull the sessions stored on the device, and every lap is timed, mapped and saved automatically. NO RACEBOX? USE YOUR PHONE Start a session with your iPhone's GPS and get real lap times on any circuit. Live map, predictive delta, lean angle, and a separate 0-100 acceleration mode with its own personal bests. EVERY LAP, IN DETAIL • Replay any lap on the map at 1x, 3x or 5x • Speed, position and time for every corner • Put your lap next to a friend's and see where the time went • Sector splits, top speed, G-forces and lean angle TRACKS Official circuits with verified records, plus tracks you build yourself — drop the start/finish line and sectors straight onto the map. Every track keeps a leaderboard of the riders on it. TRACK DAYS Find track days, book your spot, and read reviews from riders who were actually there — with their photos and lap times attached. SHARE IT Send a lap or a whole session with a link, post a story, or export a poster for Instagram. Your profile keeps every stat and badge you have earned. MESSAGES Direct and group chats with other riders, including voice messages. ALSO INSIDE • Import your existing rides from the RaceBox app (CSV) • Weather recorded automatically for every session • Your garage: cars and bikes, with photos • Available in 14 languages Free to use. Optional donations if you want to support development. Lapster is not affiliated with RaceBox. RaceBox is a trademark of its respective owner.

About

G

This app transforms your iPhone into a GPS lap timer and driving coach. Analyze your performance with detailed telemetry, compare laps, and identify areas for improvement to shave seconds off your track times.

Highlights
  • Automatic GPS lap timing
  • Live sector and delta analysis
  • Speed and G-force telemetry
  • Friction circle visualization
  • Lap comparison and analysis
  • Onboard video with telemetry overlay
Features
Read full description

SEE WHERE YOUR LAP TIME GOES Created by a professional racing driver and instructor, G-Box turns the iPhone you already own into a track-day lap timer and telemetry tool. Start free with iPhone GPS Standard. Unlock G-Box Pro for 25 Hz Fusion and advanced lap analysis. 25 HZ FUSION. JUST YOUR IPHONE. G-Box Pro combines the iPhone's built-in GPS and motion sensors (IMU) to calculate your driving line at 25 Hz. No external GPS receiver is required for Fusion. Review a smoother estimated trajectory between GPS fixes, then compare braking zones, corner speed and acceleration on exit. These are calculated position updates, not 25 Hz satellite measurements. Results depend on GPS reception, phone mounting and sensor calibration. TIME EVERY LAP • Automatic lap timing with current, previous and best lap • Live delta, sectors and predicted lap time • Create or load tracks and organize your sessions • Metric and imperial units FIND THE DIFFERENCE BETWEEN TWO LAPS Compare speed, lateral and longitudinal G, available RPM and lap delta on synchronized maps and graphs. Inspect braking, turn-in, apex and exit speed. Explore the Friction Circle and a theoretical best lap assembled from your strongest sectors. BRING YOUR EXISTING DATA Import supported telemetry from RaceChrono, Harry's LapTimer, VBOX, Race Navigator, MoTeC and AiM. Connect compatible external GPS receivers, including supported G-Box, RaceBox and selected Dragy models. Add speed and RPM from compatible OBD hardware. Available channels depend on your equipment and source files. PUT VIDEO AND DATA TOGETHER Record with iPhone cameras or connect a compatible GoPro. Synchronize video with telemetry, compare laps during playback, and export overlays with lap time, speed, G-forces, map and available RPM. Replay sessions on 2D and 3D maps. PLAN YOUR NEXT STINT Review local corner-by-corner analysis of braking and corner exit. Optional AI analysis offers another perspective on your telemetry. Export your calculated Fusion route and supported telemetry formats, including GBO, CSV, VBO, GPX, KML and NMEA. Start now with the included Nürburgring Nordschleife BTG demo lap (8:06), or bring your previous sessions. Supported imports include RaceChrono RCZ/VBO, Harry’s LapTimer HLPTRL/CSV and RaceBox VBO exports. Save your export to Files, then open Sessions > Load in G-Box. FREE TO START. PRO WHEN YOU NEED MORE. FREE: Record laps with iPhone GPS Standard, view maps and speed graphs, import supported sessions, and connect and log compatible OBD data. Overlay templates remain available to preview. PRO: Calculated 25 Hz Fusion, external GPS receivers, lap comparison, additional channels (G-forces, RPM and pedal position), corner analysis, advanced OBD power analysis and AI analysis. Video recording, import, playback, synchronization and overlay export require Pro. Cloud AI uses separate credits. Choose a one-time Lifetime purchase or a monthly subscription. Existing purchases and annual subscriptions remain supported. Location access is required for GPS lap timing and telemetry. For closed race tracks only. Mount and set up your phone before driving. Never operate it while driving. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Lapster Racing4 screens
G4 screens

Verdict

The call

The clearest difference is update cadence: G at every 4 days against Lapster Racing's fortnightly. 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Lapster Racing ships an update fortnightly, G every 4 days. The most recent releases landed on September 30, 2026 and October 8, 2026 respectively.

Scorecard1 real difference · 9 level
Lapster Racing versus G: the parameters behind the verdict, then further details
ParameterLapster RacingG
PriceFreeFree
Rating—5.0 (2 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—2 — better
Update frequencyFortnightlyEvery 4 days — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad — betteriPhone
Requires iOS17.017.0
Further details — not scored
Size39 MB59 MB
Age rating4+4+
DeveloperRoman MilushovRaceMeasure LLC

In-app purchases

None

Lapster Racing

No in-app purchases

None

G

No in-app purchases

Questions

Is Lapster Racing free?
Lapster Racing is free to download, with no in-app purchases.
Is G free?
G is free to download, with no in-app purchases.
Do Lapster Racing or G have ads?
Neither Lapster Racing nor G shows ads.
Which is updated more often, Lapster Racing or G?
Lapster Racing ships an update fortnightly, and G every 4 days. Most recently, Lapster Racing was updated on September 30, 2026 and G on October 8, 2026.

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