Comparison

RALLYSTREAM Tracking vs QUAD

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

Head to head
About

RALLYSTREAM Tracking

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RallyStreamトラッキングは、ラリー競技用トラッキングアプリです。 ソフトウェアによる自動検出とエンジニアによる二重の監視体制で競技の進行を見守り、万一の事故発生時にはいち早くラリーコントロールへ正確な情報を提供します。RallyStreamトラッキングはラリーコントロールと連携し、迅速な初動対応をサポートします。 RallyStreamトラッキングは専用のハードウェアを必要としません。参加者のスマートフォンに専用アプリをインストールし、かんたんな設定をするだけでセットアップが完了します。

About

QUAD

This app uses your phone's sensors and GPS to provide real-time lap timing, sector splits, and vehicle dynamics data like G-forces and four-wheel weight transfer. It also includes a data logger for post-drive analysis and alerts for understeer and oversteer.

Highlights
  • GPS lap and sector timing
  • Four-wheel load monitoring
  • Real-time G-G diagram
  • Understeer/oversteer alerts
  • Data logging and playback
  • Customizable UI themes and units
Read full description

A GPS lap timer that works anywhere on Earth, and an integrated vehicle-dynamics G-force meter. Using nothing but your phone's sensors and GPS, it times laps and sectors while showing four-wheel weight transfer, G-forces and chassis attitude in real time. No extra sensors. ■ GPS lap timer Circuits, of course — but you can set a course anywhere in the world. Long-press the map to place start, finish and sector lines, and every crossing splits a lap and a sector automatically. Best lap, last lap and every sector time stay on the main screen, so you can see where you are finding time while you drive. Closed circuits and open point-to-point courses are both supported, so rally and hill-climb stages work too. Save as many courses as you like, set which direction counts as a crossing, and add as many sectors as you need. With no course set, the LAP button still times from where you stand. ■ One integrated meter Four-wheel load, the G-G diagram, yaw rate and roll/pitch on a single screen, right alongside the lap display. Everything you need while driving, in one place. ■ Four-wheel load monitoring Weight transfer is computed from G-forces and your vehicle specs, then shown at each corner as colour and numbers, so you can see whether you are using all of the tyre. Load falling shifts blue, load building shifts red. Delta/absolute and %/kgf are both switchable. ■ G-G diagram Lateral against longitudinal G, with the trail you actually drove and the envelope of the limit you reached. The envelope is where your car's grip runs out, drawn for you. ■ Understeer and oversteer alerts Measured yaw rate is compared against the theoretical neutral-steer reference to catch sharp yaw-rate changes in the transient, and the app calls them out by voice and colour. The axle that is losing cornering force is boxed, so you can tell instantly which end is going. Tune it with a scene (circuit / winding road) × sensitivity profile. ■ Data logger and viewer Record a session and review times, racing line and vehicle data afterwards. A track map coloured by speed, time-series charts of G, yaw rate and attitude, and the G-G diagram all follow one playhead. Understeer and oversteer segments are marked on the charts. Export to CSV to analyse the data in external tools. ■ Customisation Theme (dark / light) and accent colour, which channels appear in the readout column, the range of each meter, load display units, render rate and more. ■ Three steps to start 1. Enter your vehicle info (weight, CG height, wheelbase, track, weight distribution). It works on the defaults, but the more accurate you are, the closer the load readout gets to your real car. 2. Mount the phone rigidly, screen upright. 3. Run calibration once before you drive. No sensors handy? Settings has a "Play demo" mode that replays real recorded track data through every feature. ■ About the in-app purchase Lap timing, the data logger and viewer, understeer/oversteer alerts and UI customisation are Premium features, unlocked with a single payment. There is no subscription and nothing auto-renews. ■ Please read This app is a simulated monitor that estimates and displays vehicle attitude, load, G-forces and understeer/oversteer tendency from phone sensors and GPS. It is not a certified measuring instrument or a safety device. All values shown are approximate and are not guaranteed to be accurate real-world measurements. Load is not a load-cell reading; it is a computed estimate. Timing accuracy depends on your device's. This app is intended for competition use in closed environments such as race circuits. Watching the screen while driving is distracted driving and is illegal and punishable under applicable traffic laws. Never watch the screen while driving on public roads. If you use it on public roads you must comply with all applicable laws and do so entirely at your own risk.

Screenshots

RALLYSTREAM Tracking4 screens
QUAD4 screens

Verdict

The call

The clearest difference is update cadence: QUAD at every 2 weeks against RALLYSTREAM Tracking's every 6 weeks. 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

RALLYSTREAM Tracking ships an update every 6 weeks, QUAD every 2 weeks. The most recent releases landed on October 14, 2026 and October 11, 2026 respectively.

Scorecard1 real difference · 7 level
RALLYSTREAM Tracking versus QUAD: the parameters behind the verdict, then further details
ParameterRALLYSTREAM TrackingQUAD
PriceFreeFree
Positive reviews—100.0% of reviews
Update frequencyEvery 6 weeksEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size2 MB49 MB
Age rating4+4+
DeveloperRallyStream inc.SYNSETECH LTD

In-app purchases

None

RALLYSTREAM Tracking

No in-app purchases

None

QUAD

No in-app purchases

Questions

Is RALLYSTREAM Tracking free?
RALLYSTREAM Tracking is free to download, with no in-app purchases.
Is QUAD free?
QUAD is free to download, with no in-app purchases.
Do RALLYSTREAM Tracking or QUAD have ads?
Neither RALLYSTREAM Tracking nor QUAD shows ads.
Which is updated more often, RALLYSTREAM Tracking or QUAD?
RALLYSTREAM Tracking ships an update every 6 weeks, and QUAD every 2 weeks. Most recently, RALLYSTREAM Tracking was updated on October 14, 2026 and QUAD on October 11, 2026.

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