To log into the Fit App use the same email and password you used to create your Specialized.com account.

Log into your Specialized.com account and follow the process to update your password.

1. Navigate to the Apple App Store.

2. Search for the “Retül Fit App”

3. Click “Download”

   App Link here

When there is an app update available, your app should automatically update. If your app is not updating, navigate to the Apple App Store on your iPad. Search for the Retül Fit App. Select the app in the App Store. You can then click on the “Update” button. This will update your app.

Before a Fit App update is live, Retül will send out a fitter newsletter with details about the update and when it will be available for fitters to download.

If you login to the app and do not see your shop listed, please reach out to your Retül representative. If you don't know who that is, send an email to bodygeometry@specialized.com. Know that in order for your shop to be the listed in the app, you must be a certified Retül certified and have purchased the VCB V8 hardware.

Navigate to the settings area of the app and click on the “Feedback” button on the left side of your screen. Select what type of feedback you would like to submit, add as many details as you can in your message, and then submit.

The fitter name that shows up on your fit reports is tied to the Specialized.com account you set up with your app log in. If you need to update what shows up on the “fitter name” on the fit report, log into your Specialized.com, navigate to account details, and update the name.

V7 data from clients who have a Specialized.com account, can be uploaded into your Fit App account

Follow the steps in the Data Upload Tool User Guide found here - RETÜL

Due to data privacy regulations, only data from clients with a Specialized.com account will be uploaded from V7 to your Fit App account.

The iPad Pro 4th generation or newer with a 12.9inch screen size. The 11inch 2nd generation or newer is also compatible but the larger screen size is easier to view. There is no minimum storage size requirement.

A compatible iPad Pro keyboard is recommended as this will streamline the typing being done during the assessment and for the fit report. Additionally, a wall mounted TV or monitor that can mirror your iPad Pro enhances the experience for the rider.

The Fit app uses the language that your iPad is set to. Go into your iPad Settings, and into the "Language & Region" to change the language.

The reports can be sent in a few different ways, including being downloaded as PDF. The link below will provide additional support in how to share fit reports. "Save to Files" will be the PDF version.

https://www.retul.com/fit-app-software-release-notes#fit-app-version-315

You can watch this video on how to archive or unarchive a client!

You can watch this video on how to delete a client!

You can watch this video on how to update a client’s email address!

Please send in a request via the app Feedback Button. When sending in your feedback submission please include the following details:

1. Client the fit was saved to.

2. Date of fit.

3. Client the fit should be moved to.

Only the 3rd Generation Vantage is compatible. Shown here on this webpage.

• For all USA retailers and Independent (non-Specialized) fitters, fill out the Retül Order Form.

• For any Specialized Retailers outside of the USA, please contact your Specialized representative.

The Hardware Onboarding tool can be found by following the steps below

1. Click the Settings icon in the top-right corner

2. In the left menu, select the Help option

3. Select the Show Hardware Onboarding link

During the Hardware Onboarding process, successful connectivity is indicated by a green check next to each device that is connected

Successful connectivity is also indicated by a rapid flashing blue light when a Zin session is started in the ZIn module. Similar behavior is present on the harness during a Pose session

To change channels, please follow the steps below

1. In the top-right corner, select the Settings icon

2. In the left menu, select the Hardware option

3. In the Channel section of the Hardware screen, select the Change Channel option

4. On this screen, you can either use the 'Suggest Channel' (recommended) option, or you can choose your own channel by using the +/- to find the Channel of your choice

5. Hit Change Channel

All Retul Vantage systems use Channels. These range in numbers between 1 and 15. Anything outside of that range is not normal behavior

From left to right, the icons in the top-right corner represent the following. Each icon represents the device in question. Please keep in mind that an icon with a green border indicates it is active and connected. Grey means it is not connected

• The first is an image of the Vantage, which indicates VCB connectivity. In this case, the icon has a green border. This implies the Vantage and VCB has a successful connection

• Second is the DSD (Digital Sitbone Device). In this instance, the DSD is not connected or turned off

• Third is the DFD (Digital Foot Device). In this instance, the DFD is not connected or turned off

• Next is the status of the sacral sensor (ANGi). In this instance, it is not connected. The sacral sensor is turned on by gently shaking the device

• The cloud-like icon indicates that your data has been synced with the cloud. If the icon turns into a spinner, that indicates the App is actively syncing with the cloud. If the icon has a red border, that indicates that it has not been synced.

The ‘searching’ status on the VCB screen implies that the VCB is waiting for some activity coming from the App. If the App is closed, the ‘searching' status will remain. If the App is opened and you have had a successful connection previously, that status will change to ‘connected’. If you have not had a previous connection, the 'searching’ status will remain. If this is the behavior, proceed with the Hardware Onboarding Tool

The 'connected' status on the VCB screen implies that there is a successful connection with the App and the VCB. This is further verified by looking for a Channel in the Channel section. The Channel has to range between 1 and 15

After turning the VCB On, the screen remains blank for around 15 - 20 seconds. If the device is functioning normally, that status will change to 'searching'. If it remains, try turning the VCB off, waiting 15 - 20 seconds before starting again. If the screen remains blank, you may have a faulty device.

If your device appears to be faulty:

1. Call Retül Tech Support at +1 720 406 1171

2. Fill out this form - RETÜL REPAIR FORM

No, the VCB powers both the Vantage and the dongle. Only the VCB needs to be turned off.

There is no way to know if all devices are set to the same channel. The channel you see in the Channel section of the Hardware page is the Channel of the dongle. The only way to make sure all devices are on the same Channel is for you to change Channels. Please make sure all your devices are turned On before changing Channels

This discrepancy can be caused by one of the following

1. The Zin tip is bent

2. The glass on the Vantage is either scratched or dirty. If dirty, please use the cloth that came with the Vantage to clean it. Using a can of compressed air to clean the glass works really well. DO NOT use a paper towel, tissue, or rag. That will scratch the glass

To determine the functionality of an LED on the harness, please follow the steps below. This assumes that the harness is attached to a rider

1. Click the Settings icon in the top-right corner

2. In the left menu, select the Hardware option

3. Select the VCB option

4. At the bottom of the screen, select the Diagnostics option

5. On the following screen, select the Harness option and click Start

6. You should see numbers between 13 and 20. Each Number is represented as follows:

   • 13 → Toe

   • 14 → Heel

   • 15 → Ankle

   • 16 → Knee

   • 17 → Hip

   • 18 → Shoulder

   • 19 → Elbow

   • 20 → Wrist

7. If either row remains red while the system is capturing, that is the bad Tracker. All rows in white and those that display numbers are functioning normally

To determine the functionality of an LED on the Zin Tool, please follow the steps below.

1. Click the Settings icon in the top-right corner

2. In the left menu, select the Hardware option

3. Select the VCB option

4. At the bottom of the screen, select the Diagnostics option

5. On the following screen, select the Zin option and click Start

6. Any row in red would be considered a bad Tracker. All rows in white and those that display numbers are the functioning Trackers

Yes. Vantage challenges can be displayed in one of the following ways

• Turing on the power and there is not a lit green light turn on the front of the Vantage

• After clicking Start in the Zin or Pose module and there, you should see a green light and a rapidly flashing blue light on each side (left and right) of the Vantage. If a blue light is missing or flashing a little slower on one side, this implies that one side of the vantage is out of sync. This could also be accompanied by inconsistent bahavior in the App. A potential solution could be attempted by stopping the session and toggling the power switch on and off about three to four time. On occassion this triggers each side of the Vantage back in sync

The recommended procedure would be to turn everything off, close the App entirely, and proceed with the recommended workflow

1. Check to see if your Mail App on your iPad is setup to send and receive emails

2. Verify that the Email address you have for the rider is valid

Yes, you can update your iPad to iPadOS 26 at anytime. This is compatible with the current version of the Fit App.

1. Check the recommended distance of the Vantage from the bike. If it is either too close or too far, the Vantage will not be able to read the data coming from the Zin Tool. The recommended distance is 8 feet

2. The height of the Vantage on the tripod from the ground could cause similar behavior. The recommended height is 3.5 feet

This could be caused by a height and/or distance discrepancy, as mentioned in the above question.

The success of the 2-step pedal spindle process is dependent the Vangtage successfully reading data coming from the three lowest markers on the harness, namely, the toe, heel, and ankle. If the Vantage cannot see these markers, there will be some challenges. Check the distance and height of your setup and verify that those markers are functioning

Inconsistent behavior of the devices could be the result of one of the following

1. in your fit studio, If your Vantage is facing large windows that allow a lot of natural light to enter the room, this could cause some challenges. The Vantage will have difficulty determining the difference between the data coming from the LEDs and the natural light

2. More answers coming soon…

Photos and videos are not available in V8 at this time. It is a feature that we know that many fitters want to have, since it was in V7, and is in our queue of features to look into in 2026.

This feature was in the first version of the app called Premium but was deemed too inaccurate and inconsistent, so it was pulled. There is potential for that feature to be brought back but needs more development and testing to do so.