To contact support, select the relevant question:
We heard your concerns, we have updated our app to ensure you have the best experience. You can update our Marrow app by clicking on the below link:
Android >  Marrow Android
iOS > Marrow iOS
With the latest update,
  • You would be able to switch from Edition 5 to Edition 4 and vice versa seamlessly.
  • Qbank of Edition 5 would be retained along with the videos of Edition 4
  • Downloaded videos would be retained during the switch between editions
  • The completed modules of Edition 4 videos have been restored.

To become a Marrow Pro user, go to and choose a Pro Plan & duration of your choice. You can also do that by going to the “Buy now” option in the menu of your Marrow Android app.