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As bitsharebots does not have your keys you will need to keep your tab open. This is not managed, you do your own trades with preset parameters. I only provide the platform, and the data aggregation.

app for android remake?

Might be able to do it, I couple people in my team that wanted to do it, but that will be after beta stage, as now we focus on making the site good and stable.

will the full node be raised? very handy for manual trading

What do you mean by raised?

Full node

If you mean the bitshares full node, then it is running behind the firewall serving the request for all the users using Bitsharesbots.