Tutorials


Frequently asked questions

  • Can I transfer my RaceChrono Pro purchase from Android to iOS? Or vice versa?
    • Unfortunately this is not possible. There are technical reasons and contract reasons. License systems in iTunes App Store and Play Store are completely separate, and not in control of the app developer. Also both stores require in their contracts that not a single app is sold without them getting their fee.

  • I haven’t received My RaceChrono or Forum confirmation e-mail, please help?
    • Unfortunately due to spammers, e-mail does not work too well. Please check your spam folder. If the confirmation is in your spam folder, please mark it NOT SPAM, to help the spam filter to right direction for future email exchange.

      Also make sure you entered a valid e-mail address. I see often typos in the addresses of bounced e-mails, such as “@hotmail.con”…

      Then there’s the less common case where emails cannot be sent at all, due to RaceChrono’s mail server being blocked. Feel free to contact us through support page if your problem is not solved.

  • I haven’t received any reply to my support request. What’s going on?
    • My aim is to answer all support requests within 36 hours. Usual response time is within 24 hours. Sometimes the recipient email address is invalid, and sometimes the request is just lost. Please re-send if no response within acceptable time.

      Unfortunately due to spammers, e-mail does not work too well. Please check your spam folder for response from RaceChrono team, before resending your request. If the response is in your spam folder, please mark it NOT SPAM, to help the spam filter to right direction for future email exchange.

  • I want RaceChrono stickers to my motorbike and/or car. Could you send me some, please?
  • I want to connect my DIY sensor or data source to RaceChrono, is that possible?
    • Yes you can connect your DIY-devices through Bluetooth RFCOMM, with special $RC2 and $RC3 data formats. The device you need to select in RaceChrono settings is “RaceDAC” or “RaceDAC with GPS” depending if you mix $GPxxx sentences in the data stream or not. This protocol is currently supported in RaceChrono Pro for Android only, unfortunately not in iOS. This is because iOS does not support Bluetooth RFCOMM.

      Data format description (pick either $RC2 or $RC3 format, not both):
      $RC2,[time],[count],[xacc],[yacc],[zacc],[rpm/d1],[d2],[a1],[a2],[a3],[a4],[a5],[a6],[a7],[a8]*checksum
      $RC3,[time],[count],[xacc],[yacc],[zacc],[gyrox],[gyroy],[gyroz],[rpm/d1],[d2],[a1],[a2],[a3],[a4],[a5],[a6],[a7],[a8],[a9],[a10],[a11],[a12],[a13],[a14],[a15]*checksum

      1. $ is message start character
      2. RC2 and RC3 are message identifiers
      3a. Timestamp field is not used (empty), if your device doesn’t have GPS and does not output $GPxxx sentenced mixed with $RCx sentences
      3b. Timestamp in NMEA 0183 format if mixed output with $GPxxx sentences
      3a. Count is an overflowing line counter 0-65535
      3b. Count field is empty if if mixed output with $GPxxx sentences
      4. acc fields: -1.000 = -1G, 1.000 = +1G
      5. gyro fields: degrees per second, -1.000 = -1 deg/s, 1.000 = +1 deg/s
      6. dx are digital channel fields, range -2000000.000 – 2000000.000
      7. ax are analog channel fields, range -2000000.000 – 2000000.000
      8. * is message separator character
      9. NMEA 0183 type checksum, with two uppercase hexadecimal digits (one byte)
      10. each line is terminated with CR plus LF

      Notice: If you’re not using mixed $GPxxx sentenced, a steady update rate is needed for this format due to the algorithm that RaceChrono uses to synchronize with GPS time. So pick update rate that is close as possible to 1/5/10/20/30/40/50/100 Hz. If you have to skip an update due to data overflow, make sure you add the ‘count’ field even for the skipped updates.

  • Which OBD-II adapter should I buy?
    • On iOS:
      OBDLink MX Wi-Fi: Super fast update rate, on a modern car up-to 50 Hz. Uses Wi-Fi connection, which means you’ll need to switch your phone’s Wi-Fi network manually when using this adapter. Has a power saving feature, so it won’t drain your battery if you leave the adapter connected, and a physical button for pairing as a security measure.
      KiWi 3: Not too impressive update rate at 10-15 Hz, but it connects using Bluetooth LE, which means zero user action needed to connect when starting sessions. This also leaves your Wi-Fi available to control other devices, such as your GoPro action camera.

      On Android:
      OBDLink LX Bluetooth or MX Bluetooth: Super fast update rate, on a modern car up-to 50 Hz. Has a power saving feature, so it won’t drain your battery if you leave the adapter connected, and a physical button for pairing as a security measure.

      There’s many more adapters that will work, but the ones mentioned are the ones I’d buy. Notice the data rates mentioned are shared between the logged channels. So if you need to log 3 channels, and your adapter achieves 15 Hz update rate, it means it’s 5 Hz update rate per channel.

  • Which external GPS should I buy?
    • On iOS:
      Dual XGPS 160: In my opinion the best option currently. It’s 10 Hz and supports GLONASS satellites.
      Garmin GLO: You’ll be fine with Garmin GLO as well, but it cannot be connected directly by RaceChrono. You can connect it to iOS location services, just connect from iOS’ Bluetooth settings, but you’ll get only around 3-4 Hz update rate.
      VBOX Sport: Great option if you have more to spend. Make sure to get the external antenna.

      On Android:
      Garmin GLO: In my opinion the best option currently. You’ll get 7-8 Hz update rate and supports GLONASS satellites with great accuracy.
      Dual XGPS 160: Not quite as accurate as Garmin GLO, but 10 Hz and supports GLONASS satellites.
      VBOX Sport: Great option if you have more to spend. Make sure to get the external antenna.

  • Where can I find old Android 2.x, Symbian and Windows versions of RaceChrono?
    • You can find the legacy versions from here. Notice that these versions are no longer maintained or supported, so you’re on your own with them.

  • I have a RaceChrono Touchscreen 3.5″ hardware, where do I get support for that?
    • The “RaceChrono Touchscreen” hardware still exists and is supported by Roost Industries. This web site and product support is dedicated for RaceChrono mobile apps only. The RaceChrono hardware project was a collaboration between Roost Industries and RaceChrono Oy. The device software was developed by RaceChrono Oy, and was based on the first generation of RaceChrono (the Symbian version). The hardware, support and sales was and still is done by Roost Industries.


Common issues for RaceChrono Pro for iOS users

  • Where can I get RaceChrono Pro for iOS? The download icons are grayed out!
    • RaceChrono Pro for iOS is currently going final stages of testing and approvals. It will be available for purchase shortly!

  • How do I get my old sessions from my other device?
    • There’s no way to move the sessions in batch currently, but you can do it one-by-one.

      1. Open the session on your other device, and press the share button. This will create a .RCZ session file that contains the session data.
      2. Move the session file to your iCloud Drive
      3. Open the iCloud Drive app on your iOS device, and tap the session file
      4. Press share button, then choose “Copy to RaceChrono Pro”.
      5. Session will open in RaceChrono. Press Save icon to keep te session.

      Notice you can use any cloud drive service here, such as DropBox. You can even send the session file as e-mail attachment and open it in your iOS device.

  • How do I connect to my Garmin GLO receiver?
    • There’s no option for Garmin GLO in RaceChrono settings, as it cannot be connected directly. You need to go to iOS Bluetooth settings, and pair and connect your Garmin GLO from there.
      In RaceChrono settings, enable Internal GPS.Now you’re ready to start your session.


      Open your device details, from the red or green round button on the recording screen, to verify that the data is received from your Garmin GLO.


      If it says 1 Hz it’s recording the internal GPS. If it says anything more than 2 Hz, it it already recording data from your Garmin GLO.


Common issues for RaceChrono and RaceChrono Pro for Android users

  • I’m getting “Play Store license validation failed” error at startup, how to fix it?
    • This is caused by failure in checking Play Store license. RaceChrono checks the license periodically, so if you hit this error, there’s a few things you need to check:

      1) Make sure your device has internet connection. It does not need the connection for every start, but if you keep running the app without connection, you will eventually hit this error.

      2) Make sure you’re logged with your Google account, and it is the same that you made your RaceChrono app purchase. Open the Play Store app; the account name is shown on the top of the menu.

      3) Make sure your phone time, date and time zone is correct. The verification will fail if it thinks the license has already expired.

  • How do I join the beta group?
  • How to backup my sessions or transfer them to a new device?
    • Here’s a short list of what you want to backup, especially if you want to uninstall the app, or factory reset your phone. Pro-tip: archive the files on source phone, and unarchive on target phone.; Transferring many single files over USB is notorious for causing corruption. I know this whole process should be a feature in the app. Will be at some point.

      RaceChrono v4.5.0 and newer

      RaceChrono:
      – internal storage: /Android/data/com.racechrono.app/files/ (sessions, tracks, exported files)
      – internal storage: /DCIM/RaceChrono/ (raw videos)
      – external storage: /Android/data/com.racechrono.app/files/ (raw videos, exported files)

      RaceChrono Pro:
      – internal storage: /Android/data/com.racechrono.pro/files/ (sessions, tracks, exported files)
      – internal storage: /DCIM/RaceChrono/ (raw videos)
      – external storage: /Android/data/com.racechrono.pro/files/ (raw videos, exported files)

      Notice: The /Android/data/com.racechrono.app (RaceChrono) and /Android/data/com.racechrono.pro (RaceChrono Pro) folders are deleted upon app’s uninstall. So if you uninstall, all your sessions and tracks (and raw videos on external storage) will be deleted. This has changed due to 3rd party cleanup apps, and even Samsung’s own apps, are known to delete the /RaceChrono/ folder on unprotected space that was used by prior versions.

      RaceChrono v4.4.0 and older

      RaceChrono:
      – internal storage: /RaceChrono/ (sessions and tracks)
      – internal storage: /DCIM/RaceChrono/ (raw videos)
      – internal storage: /Android/data/com.racechrono.app/files/ (exported files)
      – external storage: /Android/data/com.racechrono.app/files/ (exported files, raw videos)

      RaceChrono Pro:
      – internal storage: /RaceChrono/ (sessions and tracks)
      – internal storage: /DCIM/RaceChrono/ (raw videos)
      – internal storage: /Android/data/com.racechrono.pro/files/ (exported files)
      – external storage: /Android/data/com.racechrono.pro/files/ (exported files, raw videos)

      Notice, if you ever need to uninstall RaceChrono the folder under /Android/data/com.racechrono.* is deleted upon app uninstall. Makes sense at least backup the RAW videos on external storage for Pro version. The /RaceChrono/ folder is not deleted but it makes sense to backup it frequently.

  • I purchased RaceChrono Pro earlier. Why does Play Store ask me to purchase again?
    • Once you purchase RaceChrono Pro, you are allowed to re-install again for free, even when you buy a new phone or install it on your second device.

      If Play Store asks you to purchase again, you’ll need to check a couple of things to have it sorted:

      1) Check your purchases from Google Payments. To view your Play Store payment history, you must be logged in with same Google account as on your phone. Look for RaceChrono purchase.

      2) Make sure you have the same Google Account activated on your phone, as the one that you made the purchase with.

      3) If your purchase says Pro upgrade (RaceChrono), it means you have purchased the Pro upgrade in-app-purchase on the RaceChrono app. You will need to install RaceChrono, not RaceChrono Pro. The Pro upgrade is then automatically activated. RaceChrono with Pro upgrade is 100% similar to the RaceChrono Pro app. Only difference are the name and the icon.

      4) If your purchase says RaceChrono Pro, it means you have purchased the separate RaceChrono Pro app, and you should be able to install it from Play Store without additional payments.

      If you’re still having problems, do not hesitate to create a support request!


Support request

Did you go through the tutorials and the frequently asked questions, and still need help? Please send us your support request with the form below. Alternatively can also register to our User forum and post your questions there!