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Answers to Frequently Asked FLX App Questions

Answers to frequently asked question about the FLX app can be found below. Please get in touch with our dedicated customer service team if you need any further support.

Getting the FLX App

How do I buy the FLX app?

The FLX app is a 12-month subscription-based app and a purchased licence is needed for each employee you'd like to use the app.

To buy the app simply:

  1. Log in to your existing Arco account, create an account if you don't already have one or continue as a guest
  2. Go to the FLX app product page
  3. Enter the number of licences you'd like to buy and add these to your basket then follow the payment steps

For more information go to our Buying FLX app page

How do I download the app?

Once you've purchased a license for the FLX app from Arco, you'll be sent joining instructions by email, to the email address used when placing your order. If your employer has purchased FLX on your behalf, your company administrator will arrange for joining instructions to be sent to you by email.

In the email you'll be invited to create a personal profile and provided with links to download the FLX app from the App Store or the Google Play Store. Alternatively:

Are discounts available for multiple licence purchases?

Corporate rates are available for larger orders of multiple licenses. For existing customers please contact your dedicated Account Manager who will be happy to discuss this with you. New customers please contact us here.

Can I buy the FLX app for a group of employees?

Yes, you can buy the number of licences for the number of users you need on our FLX app product page.

You'll be sent joining instructions by email, to the email address used when placing your order. In the email you'll be invited to create an Administrator profile for an Administrator portal, where you can allocate licenses for individual employees. This can be accessed via PC or on mobile devices.

Each employee can then download the app on their device(s) and create their own individual profile, using the joining instructions automatically sent to them by email.

Please contact us if you need further support.

For how long does the license give me access to the FLX app?

Individual users pay a year's subscription to the app and can choose to renew or end their subscription after this time. If your employer has purchased the FLX app on your behalf, please contact your company administrator and they will be able to assist you.

Purchases of the app are covered by our standard terms and conditions.

Is The App Right for Me?

Can I view a demo of the FLX app?

Click here to watch a video describing how to use the app.

Will the exercises be suitable for me?

The FLX app takes you through a series of questions and assessment/movement exercises to establish your current level of mobility and pain and then devises a rehabilitation programme specifically for you.

What health conditions does the FLX app treat?

The pain programme in the FLX app helps ease pain and manage musculoskeletal problems (those related to the joints, bones and muscles), including pain associated with work activities and daily living, such as foot pain, knee pain, back and shoulder pain.

The biomechanics programme in the FLX app helps you become more biomechanically efficient and helps prevent injuries.

Will the FLX app help me manage my pain?

The FLX app is designed to help you self-manage body pain. The pain programme in the FLX app will assess your current pain levels and monitor them over time as you do the exercises. It will also direct you to seek medical advice if you are either not suited to the programme or if you don't seem to be responding as would be expected.

Do I need any special equipment to do the exercises?

Very little equipment is needed. Some exercises need equipment like a small ball or resistance band.

You can use things you will have in your house, such as a tennis ball or a towel or you can buy your own if you wish. The FLX app will help advise what you can use if you don't have physio equipment.

Do I need a special place to do the exercises?

Exercise can be conducted at a time convenient to you, anywhere you feel comfortable. You just need a bit of floor space and a wall.

How often do I need to use the FLX app?

The app will take you through a series of exercises which takes 10 - 15 minutes. For all programmes, it's recommended that the exercises are performed daily. To complete the pain programme takes up to 6 weeks. The biomechanics program takes 12 weeks.

Can I use the FLX app if I'm pregnant or breastfeeding?

If you are pregnant, we recommend seeking medical advice before using the FLX app as there are certain elements which may not be safe to use. Breastfeeding mothers can use the FLX app, as long as they don't suffer from other conditions which would prevent them doing so.

Is the FLX app suitable for children?

The app is suitable for children aged 12 and above. In general, younger children don't suffer from musculoskeletal issues or diseases, and should see a healthcare professional if they do.

Using the FLX App

Which programme should I select?

You should select the pain programme if you are experiencing pain or have an existing issue.

You should select the biomechanics programme if you are looking to improve your biomechanics, including your flexibility, to reduce your risk of injury as part of an active lifestyle to keep yourself healthy.

Will the FLX app diagnose my problem?

The FLX app will not provide you with a diagnosis but based on your input into the pain programme, it will identify appropriate exercises.

How do I log on to my FLX programme?

Open the FLX app on your device and log on using the email and password you created when you first registered. When you first created your profile, you'll have inputted your name and created a password. Password and username are both case sensitive.

Your password can be changed in account settings.

What are the technical requirements for the FLX app?

For the FLX app to operate on their device, users will need:

  • Internet access
  • 50 MB of memory

We recommend using the latest version of the Android or iOS operating system to ensure you receive the best user experience and enabling push notifications so you can benefit from the reminder functionality. This can also be toggled on and off.

Do I need to do the exercises at a particular time?

No, you can choose when to do the exercises to fit in with your daily life and you can set when you wish to receive reminders.

Will the app remind me to do my exercises?

You will receive a push notification every day to remind you to do your exercise(s). There is also a dashboard in the app that shows how often you've done your exercises and, if you have pain, tracks your level of pain as you improve.

Can I continue to do my normal sporting activities?

When using the FLX app biomechanics program yes, you can continue your normal routine.

If you're using the FLX app pain program, your pain will guide your ability to perform sports, but as you would normally, seek the help of a healthcare professional if the pain is interfering with your activity.

Can I continue with other treatment and exercises I've been doing?

Yes, the FLX app can be used alongside any other treatment or interventions you may be using.

I can't find an exercise my health care professional has recommended?

Only exercises linked to our treatment algorithm are included in the FLX app, these have been found to give the best outcomes.

Should I consult medical advice?

You should not rely on the information on our site or in the app above advice from healthcare professionals or your employer. Although we personalise your experience using screening tests and tracking your progress, this should by no means be used as a substitute for professional medical advice, diagnosis or treatment, and should not be relied on to make decisions about your health.

In the case of a health emergency, seek immediate assistance from emergency medical professionals. Never delay in obtaining medical advice, or disregard the advice of a medical professional, because of something you have read, or not read, on our site or app.

If you are a healthcare professional, you should continue to engage with any of your users who use the app as usual in accordance with good medical practice and should not solely rely on the information they submit to the app in order to discharge your responsibility for their care.

Can I print the exercise sheets?

No, all exercises are delivered through the app using video, picture and written instructions.

Is the FLX app available in different languages?

Not currently, though we are looking to incorporate other languages.


I can't download the FLX app?

To download the FLX app you need to use the link sent to you direct by email once you have purchased it from Arco, or by your employer if they have purchased it for you. If you've entered this correctly and still can't download the app, contact

I've forgotten my password?

Click "Forgot your password?" at the bottom of the sign in page where you can reset your password.

Is there anyone I can contact to help me with the exercises?

All exercises in the app include detailed instructions and videos. If you need further assistance contact to request help.

The FLX app has stopped working?

We recommend you take the following steps:

  1. Check you have an internet connection
  2. Ensure you have the latest version of the FLX app installed
  3. Ensure you have the latest version of your phone's operating system installed
  4. If the problem still persists after checking all of the above, we recommend deleting the FLX app and re downloading it.
  5. Once you've completed these steps, if you're still having issues contact
I'm changing my phone, will my data be saved for me to see on my new phone?

Yes, the data linked to your account will be available to you when you install the FLX app on your new phone.

I've changed my phone, what do I need to do to access the app?

Download the app on your new device from Google Play Store for Android devices or App Store for iOS devices, then log on as normal using your email and password.

If I let my license/subscription expire, will I be able to retrieve my data when I re-subscribe?

If you re-subscribe within 6 months of your subscription expiring your data will be available to you when you re-subscribe using the same email address.

Can I swap an FLX app subscription license to another employee?

You can swap licences to a different user and the newly assigned employee will receive the remaining time balance remaining on the licence. Revoking a license and giving access to another employee can both be done in the administrator portal.

Any data connected to the original user will no longer be available.


Who created the exercise programme?

The FLX app has been developed, based on 15 years of biomechanical research, by a team of world experts in physiotherapy and biomechanics. Martin Haines, the lead developer, is a Chartered Physiotherapist, a Remedial Gymnast and a Biomechanics Coach. Click here to find out more.

Is the FLX programme proven to help treat muscle and joint pain?

Yes, there is a pain program in the app that helps you self-manage most pain in your major joints: back, shoulder, elbow, knee, foot and ankle pain. Read the case studies here.

Is there any clinical evidence for the FLX programme?

The FLX app functions using algorithms developed from a data set of 4,000 individuals and have been proven in real world studies among hundreds of users. Click here to find out more.

Data Protection

Does the FLX app collect user's data?

FLX Health may collect data you submit to the FLX app. By providing us with additional information about you and your muskuloskeletal/biomechanical issues, FLX Health are able to provide better and more personalised services and information through the FLX app algorithms to better tailor the care to your individual needs.

By using the FLX app, you agree to FLX Health collecting and using various information about you and the devices you access and use the service on, to improve products and to provide any services to you, in accordance with the FLX Health Privacy Policy.

FLX Health data collection is in accordance with the provisions of the General Data Protection Regulation (GDPR). A copy of FLX Health's Privacy Policy is available to download here and from the app store.

Will the FLX app share information with my employer?

No individually identifiable health information is shared with your employer. General information is shared but it is anonymous.

Is my data secure?

Data is held in accordance with the General Data Protection Regulation (GDPR). For further information read the FLX Health Privacy Policy, available to download here and from the app store.

Will data be shared with other organisations?

No data will be shared with other organisations.

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