There is also [an app](https://github.com/TeamPiped/Piped#made-with-piped) for iOS and Android (WIP).
We have disabled the registrations for now. We hope that local storage on your device will be part of the clients in the near future.
However, it seems that the idea is to keep the clients free of it to save resources for the server. Check [that](https://github.com/libre-tube/LibreTube/issues/128).