iPhone Screenshots


CrewNerd turns your cell phone into an on-the-water training tool in any rowing shell, canoe, kayak or dragon boat - with no wiring! With a waterproof case, you can get real-time data during your workout and even relay it to your coach.

Using the accelerometer in your device, CrewNerd is able to accurately calculate your stroke rate as well as how much bounce (vertical movement) and stern check you are producing. Speed, pace and distance are calculated via GPS.

• Configurable display

In landscape mode there are up to six configurable data fields, and in portrait mode there are up to ten. Choose from the following:
• Stroke rate
• Elapsed time
• Distance
• Speed or pace
• Average speed or pace
• Heart rate
• Stroke count
• Interval count
• Meters per stroke
• Total distance
• Projected time and distance
• Check
• Bounce
• Course (direction)
• Time of day

Set the top line to be double-height to make the most important data stand out. In portrait mode, the top two lines can both be made double-height.

• Custom workouts

Select from one of the provided workouts, or create your own based on distance, time or strokes. An auto-start feature starts the timer when the first stroke is taken, or you can set a “countdown” of 15 or 30 seconds before the timer starts to allow you to build up speed before starting a piece.

• Custom courses

Create custom by plotting your start and finish lines on a map. The application will start the timer automatically when you cross the start line and stop when you reach the finish. This is great for hands free operation in long distance races or for set routes you routinely use.

• Review your data

All workout data is recorded and can be reviewed on the device or exported for use with compatible desktop applications and web sites. Supported export formats: GPX, KML, TCX, and CSV. You can view a map of your workout or view an interval data chart with configurable distance markers showing split times on your phone.

• Heart rate

CrewNerd supports all Bluetooth Smart heart rate monitors.

• Live position tracking

Stream your workout data as it happens to any web browser via CrewNerd.com.

• VoiceOver support

For blind and vision-impaired athletes, CrewNerd provides audible feedback during your workouts. Configure the content and timing of the announcements to meet your needs.

• For coaches

Use custom workouts to keep your practices on target. In coach mode, you can tap anywhere on the screen to check stroke rate. CrewNerd can also be used on the iPad for a larger display.

Waterproof cases are available to protect your iPhone on the water. See our web site for more information.

What’s New

Version 5.06

Bug fixes

Ratings and Reviews

4.5 out of 5
22 Ratings

22 Ratings

Ape Priori ,

Requesting Apple Watch Functionality

4 years after my initial review, still a great app. Now that I have an apple watch I find myself wishing I could use apple watch functionalities with CrewNerd, this would be things like heart rate, workouts, distances, etc.

Manchild93 ,

Inconsistent Performance

I started off with CrewNerd Lite to see if the app was worth the price. After a few rows, I opted into the full version of CrewNerd and was initially very impressed. I liked the support for my Polar H7, which coupled with the tailorable Row/Paddle page, allowed me to see my strokes per minute (SPM) and heart rate in BPM.
Unfortunately, the SPM and BPM are now working sporadically, which leads to a frustrating workout, especially when your coach is telling you to keep a specific SPM.

grimaldicoxswain ,


This app is the most beneficial, user friendly, and accurate data collector for rowing that i have worked with yet! The SpeedCoach Mobile is at the top of its category in gathering quantitative feedback and it is incredibly beneficial to use this information to enhance training, make technical changes, and offer instantaneous personal feedback. The key feature for me? The cordless mobility! SpeedCoach Mobile has all the capabilities of a regular speed coach without having to deal with the rusted, fraying wires and bent, unaccurate empellers. The display is very user friendly and adjustable. You can choose what type of data you would like to see whether it be time and meters, rate and splits/500, strokes taken and time, all of the above, etc! What has been especially beneficial to me and my team is the easy, instant on the water feedback the SpeedCoach allows. If we are doing three 2000meter pieces, after each piece we check our time and splits immediately and discuss how we can improve speed off of that information. These pieces were used to analyze a switch of our two seat to determine the varsity lineup. It is incredibly interesting to see the change in avg/500 right after a piece on the water!!! This is the more effective and incredible training app!


Performance Phones, LLC
11.1 MB

Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
Rated 4+
© 2019 Performance Phones, LLC
In-App Purchases
  1. Live Tracking - 50 hours $8.99
  2. Live Tracking - 10 hours $1.99
  3. Live Tracking - 25 hours $4.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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