You have a question about re.flex? Contact us.
You have a question about re.flex? Contact us.
Offizielle DiGA
CE-zertifiziertes Medizienprodukt
Datenschutzkonform nach DSGVO
Offizielle DiGA
CE-zertifiziertes Medizienprodukt
Datenschutzkonform nach DSGVO

Rehab. At home.

re.flex is your digital therapist for knee pain. With re.flex you regain quality of life. At home, independently and wherever you want. With our patented sensor kit we help you to fight osteoarthritis-related knee pain effectively and sustainably. With measurable results in pain reduction.


Put on.



With instructions
and direct feedback.


Exercise with a certified medical device and specialized sensor technology to postpone or completely avoid knee or total knee replacement, if possible.


Take the therapy process for the treatment of your joint pain into your own hands. Decide when and how you want to train – without an appointment and without waiting times.


Decide for yourself where you want to train, at home, on vacation, during your lunch break or in the garden – in any case without travel and where you like it.

Our patented sensor kit.

Our patented sensor kit.

One app and two sensors for more safety.

With our product, we support gonarthrosis patients through a therapeutic training program. The special thing about our product is that it is not just an app.
We have developed a special sensor kit so that we can give you the best possible guidance and help you if you are not quite sure how to perform the movement.
This means that we can give you immediate feedback on whether you are performing the exercise correctly. You get our feedback both visually in 3D and acoustically.

This is how the app works on prescription.

Step 1
Prescription or proof of diagnosis.
Ask your doctor for a prescription for re.flex. If gonarthrosis has already been diagnosed, you can also contact your health insurance company directly.
Step 2
Submit prescription.
Submit the prescription you received from your doctor to your health insurance company. Contact your health insurance company or use the prescription service of SPORLASTIC.
Step 3
Download and register the app.



Order sensor kit.
Step 4

Create an account in the app and follow the instructions to order the sensor kit.

Step 5
Unlock training plan.
After receiving the sensor kit and the unlock code, connect the sensors and enter the unlock code to activate the training plan.
Step 6
Activate plan and start training!

With the activation of the 12-week training plan, the training begins.

What patients say about re.flex.

We asked patients what their experiences with re.flex were.
Inge Riepl, 57

Without this system I would not be able to do the exercises as precisely as I was taught by re.flex. This device was an absolute motivation.

John Bilton, 34

It helps you communicate with your physiotherapist, track your progress and stay motivated. Seeing how this technology has improved my rehabilitation process has been invaluable.

Colin Brown, 63

I became more disciplined. It helped me a lot because I couldn’t go to a normal physiotherapist. I used it to prepare for the surgery and get back in shape faster.

Frequently asked questions

re.flex is a digital exercise assistant designed for covering both pre & post operative use cases of patients with ACL, total knee & total hip replacement and also preventative care cases for knee & hip osteoarthritis and lower back pain.

With 2 motion sensors and a 2-3 month digital training program as a patient you are guaranteed to ensure an improved exercise control throughout your physical therapy journey.

The patented sensor technology specially developed for exercise therapy enables meticulously precise recording of your movements and provides you with almost instantaneous feedback on the quality and quantity of your movements.

The movement visualization sequences are shown in real-time as 3D animation in the re.flex app. The 2-sensor technology ensures reliable angle measurement.

The effectiveness of re.flex has been validated in several clinical studies in Germany. After 12 weeks of training, re.flex showed a significant reduction in knee pain for patients diagnosed with gonarthrosis.

Health improvement:

  • Reduction of pain (KOOS pain)
  • Reducing Difficulty in Activities of Daily Living (KOOS ADL)

The guided exercises in sports and movement therapy are aimed at stabilizing the affected knee joint and reducing abnormal joint loads by improving muscular stabilization, which leads to a reduction in the pain felt and an increase in functionality.

re.flex is a class I medical device and is compliant with the ISO 27001 standard for information security. The accuracy of the device was first validated in 2019, with Charite Hospital in Berlin (Germany), resulting in a 4% average deviation from the Gold Standard of motion tracking movement, which means a very good result. Later on, in 2022, a second accuracy validation study was completed with Offenburg University, with comparable results being recorded. 

The safety of re.flex has been validated in several clinical studies. The re.flex training program for gonarthrosis was developed in cooperation with the sports medicine department of the University Hospital in Tübingen.

re.flex manages to secure public reimbursement in Germany, the largest European healthcare market. Since 2022, re.flex is officially listed as DIGA. More information about the DIGA re.flex: DiGA-Verzeichnis

re.flex is available right now in UK (self referral or private hospitals) and Germany (public reimbursement – DiGA. Patients in other countries can’t get re.flex at the moment


  • iPhone (ab iPhone 6), iPad (ab iPad 5), iPad Pro, iPad Air (ab iPad Air 2) und iPad mini (ab iPad mini 2)
  • iOS 12/Ipad OS13


  • Android 7+

Together for a pain-free life.

re.flex and Sporlastic have joined forces to revolutionize the German orthopedic and rehabilitation market. Our innovative knee osteoarthritis prevention product has successfully completed two medical studies and received public reimbursement in Germany, through DiGA .

By joining forces with key industry partners, our aim is to develop solutions for ACL, TKR, THR, Hip Osteoarthritis, and lower back pain, under the DiGA’ public reimbursement pathway.

Additionally, we are exploring opportunities to expand to countries like France and the United States with DTx reimbursement pathways.

If you represent a hospital chain, distributor, or health insurance company, let’s connect and collaborate for transformative healthcare solutions.

Get in touch

About re.flex

re.flex is the most precise digital therapist on the market. re.flex helps you treat knee, hip, and low back pain effectively and sustainably. The effect is measurable and proven in scientific studies. Our technology not only demonstrates the exercises to you, but also helps you with active, direct, feedback if you are not quite sure. With re.flex you relieve your pain and regain quality of life.

For Partners
Social Media

Copyright © 2023 Reflex.Help 

Scroll to Top