Electroneum wallet: where is your private key??

[Lionel]

AFAIK the only ETN wallet is the mobile one (*) .
I wonder where does it keep your private key, is it on the Electroneum site servers ?

I guess your key is on ETN servers because you must login to the app with your ETN site credentials.
But this implies your key is not in your hands.

Even if we assume the private key is only stored on your phone, it is still not secure, as it is not password-encrypted.

The ideal would be if they release a Windows/Linux wallet as well so that we have the option to keep our keys on a Veracrypt volume.
Are they planning to release it?

If not, is there a secure way to hold big amounts of ETN?
When dealing with big amounts we must pay attention to how the private keys are handled.


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(*)  besides the "paper" wallet which is secure but has the drawback that doesn't let you spend a part of your coins, but only import the whole wallet elsewhere.