This page is for an offline DESKTOP/LAPTOP version, not mobile. To vote for a mobile app, see: https://noteflight.uservoice.com/forums/4962-tell-us-your-thoughts/suggestions/4327326-ios-and-android-apps-instead-of-accessing-throughAt commented
I would very much love to be able to download Noteflight onto my desktop! Editing and composing large scores solely online is a lot for a browser to handle.
Thanks for your feedback! Playback mode is something we’ve been looking carefully at in case there are ways we can improve it. Currently you can also press Esc. to get back to edit mode. We welcome your further suggestions – just write to firstname.lastname@example.org.