iPhone Screenshots


The Platysens Marlin is a swim meter designed to talk to you. This App uses Bluetooth low energy technology to enable the configuration and data synchronisation of the Marlin device.

Account Setup -
A free account setup is required for the use of the App. Data backup to our cloud allows for data to be securely backed up on our servers.

Configuration -
Set up configuration for pool mode or open water mode*. Once completed, the configuration can be transferred to the Marlin device.

Data Synchronisation -
After your swim, data from the Marlin device can be synchronised to the device. Detailed data of your swim can be displayed in the App.

Open Water Courses -
Set up your open water course on a map and transfer to the Marlin device. The Marlin device will provide navigation information to guide you to the destination.

Training Program -
Training programs can be configured in the App and transferred to the Marlin device. When you swim, a friendly voice will help you step through each step of the training program.

Platysens Swim Meter -
This is a companion APP for the Platysens Marlin Swim Meter. For more information, visit us at http://www.platysens.com

*Open water mode is not available on the Marlin-P model

Privacy Policy -

What’s New

Version 0.11.23

New Features:
- You can now merge/split laps in pool swim history
- You can now view/delete published course
- Workout history statistics is now available
- Home page summary can show statistic chart (can be enable in Marlin App Setting)
- You can now set lap pace up to 1 decimal place
- Your workout history will now be synchronised even you are using multiple phones/tablet with the same Marlin
- Japanese and Spanish UI
- Calories are now calculated more accurately
- New UI for tempo setting

Bug Fixed:
- Pool swim history now display segments and training sets correctly
- Fixed open swim history split view crash and wrong values
- Fixed the bug that swim style of all workouts become freestyle when workouts are downloaded from cloud during sign in
- Device Info now refresh automatically after clearing flash
- Edit pool length UI bug fixed
- Swim.com authorisation never success bug fixed
- Open water workout auto uploaded to Strava missing GPS data bug fixed

Ratings and Reviews


With its hardware gadget, this app is amazing

You need to buy the gadget that fits on your swim goggles. I use this for open water swimming. I love being able to draw a route on a map and then not have to think about where I’m going while swimming because the gadget tells me where to go. Great data collection, too.

SitkaAK ,

Best Open Water Swim Tracker/Feedback/Recorder

Easy to use and provides excellent feedback both during the swim and displayed on the app. Excellent GPS.


Platysens Limited
109.7 MB
Requires iOS 9.3 or later. Compatible with iPhone, iPad, and iPod touch.
English, Japanese, Simplified Chinese, Spanish, Traditional Chinese
Age Rating
Rated 4+
© Platysens Limited


  • Family Sharing

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

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