Support
Welcome to the support section for the VentriJect app and Seismofit® sensor. Here, you can find helpful troubleshooting steps for the most common issues encountered when connecting and using the app and device. Our technology is designed to provide accurate VO₂ max measurements to help you monitor and improve your cardiovascular health.
We are here to assist you!
If the below does not answer your question do not hesitate to contact us at support@ventriject.com
Getting started with Seismofit®
Congratulations on your new Seismofit® Sensor! This guide will help you get started with ease, ensuring you can begin measuring VO₂ max and monitoring cardiovascular health right away.
1. Register Your Users
After signing a contract with VentriJect, please contact us to register your users. Registered users will have access to all Seismofit® Sensors you possess.
To register users, visit our support site or send us an email. Your message should include the following information:
- Email addresses of the user(s)
- Names of the user(s)
- Your company name
Once we receive this information, we will create user accounts in our system. The user(s) will automatically receive an email from “noreply@ventriject.io” with a link to create a password. This email and password will be needed to sign in to the VentriJect app.
2. Download the App
With the password created, user(s) should download the VentriJect app. It is available for both iOS and Android platforms. Search for “VentriJect Clinical” in the app stores to find the app. Alternatively, you can download it directly from our website: ventriject.com/app.
3. Sign In to the App
After downloading the app, user(s) must log in using the email and password combination created in step 1. Once signed in, the app will display a list of all available Seismofit® Sensors in the vicinity.
If a Seismofit® Sensor does not appear, please ensure the battery is correctly positioned and charged. For additional help, refer to the troubleshooting guides below or contact our support team for comprehensive troubleshooting assistance.
4. Start Measuring
Your users are now ready to use the Seismofit® Sensor to estimate cardiorespiratory fitness accurately. For detailed instructions on using the Seismofit® Sensor, refer to the user manual available on our website: ventriject.com/ifu.
If you encounter any issues, feel free to reach out to our support team at support@ventriject.com. We’re here to help!
Reset password
If you have forgotten your password, you can reset it. This can be done either via VentriJects’ App or from our online portal. The procedure is basically the same.
Reset the password from App
Step 1 | Step 2 | Step 3 |
 |  |  |
Click on “Forgot password?” | Enter your e-mail in the field and click “Submit” | When you have clicked on“Submit” you will see the following message |
An email will now be sent to your email-address. This may end up in your SPAM folder, so if you do not receive an email in your inbox, within approx. 5 minutes have, look in your SPAM folder.
Step 4 | Step 5 | Step 6 |
|  |  |
Open your email client, find the email from “noreply@ventriject.io” and click on the link in the email | When you open the link, you are sent to our online portal, where you enter your email, your new password and finally confirm this. Note: your password must consist of:
Then click on “Submit” | After clicking reset, the following screen appears, confirming that your new password is ready for use in the app. |
Reset password via Online Portal
Your password can be reset using your preferred web browser.
Enter your email address in the field here. Then click on “Submit”
A message will now be sent to your email. This may end up in your SPAM folder, so if you do not receive an email in your inbox, within approx. 5 minutes, have a look in your SPAM folder.
Open your email client, find the email from “noreply@ventriject.io” and click on the link in the email
When you open the link, you are sent to our online portal, where you enter your email, your new password and finally confirm this.
Note: your password must consist of:
At least 8 characters
A capital letter
A small letter
A special character
Then click on reset
After clicking on reset, a reset confirmation is displayed.
Your new password is ready for use in the app.
Seismofit® Sensor does not show up in the app
What happens?
When logging into the app, devices are not found. There are no other error messages such as a lack of connection to Bluetooth.
Why is it happening?
Updating the list of Bluetooth devices does not happen very often, and therefore it likely is not showing, if it was not found on the first scan.
How to solve this problem
To fix this issue, inside the app, press and hold the center of the screen with one finger while swiping down, then release. At the same time as this movement, a symbol for reloading the list is briefly seen:
Invalid Token Error
This article explains why “Invalid Token Error” might be occur, and how it can be fixed
What happens?
When resetting your password (or creating a password for a new user), you get the error “Token Invalid”.
Why is it happening?
If you have not created the password after you requested a password reset or after your usr was created within a certain timme limit, you will get this error.
How to solve this problem
To resolve this issue, simply go to: VentriJect ID Server and perform a new password reset.
In order not to get the same error again, make sure to create your new password within 1 hour after you have requested the password reset.
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Seismofit® Sensor does not show in the app (battery check)
What happens?
When logging into the app, the Seismofit® Sensor is not found. Updating the list following the guide has been attempted:
There are still no error messages
Why is it happening?
The Seismofit® Sensor is not on the list, as it is not connected to power due to a battery error
How to solve this problem
The battery must be placed correctly in the drawer. A guide on how the battery is placed correctly in the drawer is found below:
The Seismofit® Sensor has a drawer, in which a battery is placed
The battery has a positive side, as shown in the image:
The other side of the battery is the negative side, as shown in the image:
The battery is placed in the drawer with the negative side facing up.
After placing the battery as explained in the guide above, the list of Seismofit® Sensors inside the VentriJect App must be updated. A guide for doing this is found on:
If this does not help, the battery might be out of power, thus a new battery must be used.
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Seismofit® doesn't show up in the app (Android Permissions)
If you use an Android, using Android 12 or below, the list of Seismofit® Sensors may appear empty when you open up the app.
Follow the steps below, to resolve this issue:
Open the Settings App on your phone
Tap on “Security and Privacy”
Tap on “Privacy”
Tab on “Permissions Manager”
Locate the menu – “Nearby Devices”
In the list of apps, make sure that “VentriJect Clinical” is located in the “Allow” section.
If “VentriJect Clinical” is located in the “Not Allowed” section, tap on the name of the app, and select “Allow”
Close the VentriJect Clinical app, and open it again – the devices should now appear
Please see the guides below, if the steps above do not resolve your issue.
VentriJect Research App (Onboarding)
If you’re using the Seismofit® Sensor for studies and research purposes, the login process is a bit different than for the clinical app. We’ve provided detailed instructions below to help you set up your account smoothly.
Download the app
The VentriJect Research App is “Hidden” in the Apple App Store, meaning that it cannot be found by searching for the app name. For Android, the app can be downloaded directly
Apple iOS
For Apple iOS, the app can be downloaded via the following link (open the link on your iPhone to be redirected to the Apple iOS App Store):
https://apps.apple.com/us/app/ventriject-research/id1623560596
Android / Google Play Store
For Android (Google Play Store), the app can be downloaded directly from the store:
https://play.google.com/store/apps/details?id=com.ventriject.ResearchApp
Get access to the app
The first time you open the app it will present you with an Error, telling you that you do not have access to the app. This is normal. The app will present a “Unique Identification Key”. The button below can be used to copy the text.
Send the key to support@ventriject.com with information about you and the clinical study you are conducting. This will enable us, to grant you access to the app.
You will also receive an email from noreply@ventriject.io with instructions about how to create a password for your new VentriJect Account. Please follow that instruction, even though the password is not currently used to login.
Unique Recording Identification
When you use the VentriJect Research App, a Unique Recording Identification is presented, when the estimation of VO₂ max is completed (see below).
It is important to note down the first 8 characters of this unique identification number together with the remaining information about the subject/patient, as it will allow us to re-find the recording in our database.
This screen will also show if the analysis was OK. If no, consider redoing the recording.
View VO₂max result
The VO₂ max result is hidden by default in the VentriJect Research App. To find it, scroll down on the result screen, to recall it (see video of use below)
Video of the App
A video of the use of the VentriJect Research App can be found. below. This will also show how to see the result of the VO₂ max analysis.
Support
For support, please contact VentriJect at support@ventriject.com