Comparison

RaceChrono Pro vs Spark ECU

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

Head to head
About

RaceChrono Pro

This app serves as a comprehensive lap timer and data logger for motorsports, enabling users to record and analyze performance. It offers video recording with data overlays and supports a wide range of external GPS and OBD-II devices for enhanced accuracy.

Highlights
  • Lap timing with sectors and optimal lap
  • Track library with over 2600 pre-made tracks
  • Data analysis with synchronized graphs and maps
  • Predictive lap timing
  • Video recording with data overlay
  • Support for external GPS and OBD-II devices
  • Unlimited session length
Features
Currently charting
Read full description

RaceChrono Pro is a versatile lap timer, data logging and data analysis app designed especially for use in motorsports, replacing your traditional lap timers and data loggers. The RaceChrono Pro app also enables you to record videos and overlay them with the logged data. RaceChrono apps have a strong following, currently over 100000 active users. If you look around at pits during your race or track day, chances are that you’ll see someone using RaceChrono. Even many professionals, such as factory test drivers and race driving instructors, are known to use this app! No matter whether you ride motorbikes, drive go-karts or cars, on closed circuit or special stage tracks – this is the motorsports app for you. RaceChrono Pro has following major features: • Lap timing with sectors and optimal lap • Track library of over 2600 pre-made race tracks • Custom user defined circuit and point-to-point tracks • Smoothly scrolling data analysis with synchronised graph, X/Y graph, map, video and comparison video • Predictive lap timing and time delta graph • Hardware accelerated video export with configurable data overlay • Multiple camera recording and picture-in-picture video export • Video recording using internal camera • Linking and synchronising video files from almost all action cameras • Support for external GPS receivers; Dragy Pro/DRG70/DRG70-C/Lite, RaceBox Mini/Mini S/Micro, Qstarz BL-818GT/BL-1000GT/LT-8000GT, Columbus P-9 Race, Dual XGPS 150/160, VBOX Sport, Garmin GLO • Support for OBD-II readers; OBDLink MX+ Bluetooth, OBDLink CX Bluetooth, Dragy OBD, Vgate vLinker FS, Vgate vLinker/iCar BLE, PLX Kiwi 3/4, Carista OBD2 Bluetooth, Tonwon BLE 1/2/Pro, Veepeak OBDCheck BLE, UniCarScan UCSI-2000, OBDLink MX Wi-Fi, generic Wi-Fi OBD-II • Support for Bluetooth LE heart rate monitors • Unlimited session length, good for 24 hour races • Session data export in .ODS (session summary for Excel), .NMEA, .VBO and .CSV formats

About

Spark ECU

View live engine data from your vehicle in real-time. Connect your smartphone via Bluetooth to access telemetry, receive diagnostic alerts, and adjust fuel settings. Easily switch between engine maps with an intuitive interface.

Highlights
  • Live engine data telemetry
  • Diagnostic fault alerts
  • Fuel adjustment settings
  • Engine map switching
  • Bluetooth connectivity
  • Automatic device pairing
Features
Read full description

SPARK app gives you a smart, intuitive interface to view all the live data from your engine in real time. Connect your smartphone via Bluetooth to the Taipan and Yarara ECU in two ways: • Via the CAN-BT Module, for instant access to main engine data and real-time telemetry. • Using the XLog, if you want to collect data while driving as well. The app provides you with live dash telemetry, warning and alerts for diagnostic faults and fuel adjustments. Furthermore, with SPARK app you can switch maps just using the scrollbar on your phone. Thanks to the automatic pairing, you just need to connect your device once!

Screenshots

RaceChrono Pro4 screens
Spark ECU4 screens

Verdict

The call

The clearest difference is review sentiment: RaceChrono Pro at 58% against Spark ECU's 0%. RaceChrono Pro also leads on rating (4.7 vs 1.0) and update cadence (monthly vs every 7 months). Spark ECU's advantage is price (Free vs $19.99). On 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

Spark ECU is free to download; RaceChrono Pro costs $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

RaceChrono Pro holds the better App Store score, 4.7 against 1.0. That said, the two scores are not equally well evidenced: RaceChrono Pro has 184 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 58% of RaceChrono Pro's written reviews are positive against 0% of Spark ECU's.

UpkeepUpdate frequency

RaceChrono Pro ships an update monthly, Spark ECU every 7 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

Scorecard8 real differences · 3 level
RaceChrono Pro versus Spark ECU: the parameters behind the verdict, then further details
ParameterRaceChrono ProSpark ECU
Price$19.99Free — better
Rating4.7 (184 ratings) — better1.0 (1 ratings)
Positive reviews57.6% of reviews — better0.0% of reviews
Number of ratings184 — better1
Update frequencyMonthly — betterEvery 7 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreemiumFree — better
Best chart rank#11 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better18.0
Further details — not scored
Size43 MB129 MB
Age rating4+4+
DeveloperRaceChrono OyAIM tech SRL

Customer experience

RaceChrono Pro

All ratings184 ratings
Positive92.9%
Neutral2.2%
Negative4.9%
Written reviews144 reviews
Positive57.6%
Neutral11.8%
Negative30.6%

Spark ECU

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

RaceChrono Pro

No in-app purchases

None

Spark ECU

No in-app purchases

Questions

Is RaceChrono Pro free?
RaceChrono Pro costs $19.99, with no in-app purchases.
Is Spark ECU free?
Spark ECU is free to download, with no in-app purchases.
Which has better reviews, RaceChrono Pro or Spark ECU?
RaceChrono Pro is rated higher. RaceChrono Pro averages 4.7 out of 5 from 184 ratings, while Spark ECU averages 1.0 from 1 ratings.
Do RaceChrono Pro or Spark ECU have ads?
Neither RaceChrono Pro nor Spark ECU shows ads.
Which is updated more often, RaceChrono Pro or Spark ECU?
RaceChrono Pro ships an update monthly, and Spark ECU every 7 months. Most recently, RaceChrono Pro was updated on November 6, 2026 and Spark ECU on November 3, 2026.

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