On-chain fees are always visible at the top section of any screen. There's also a historic fee chart. The fee data is being pulled from mempool.space, which can be on your own node or the public api. There are about 28 or so screens in all, but the fees, price and block height are always visible.
I don't like the timing you have though because it's not right. There's not a block every ten minutes, that's a myth. I've seen over an hour between blocks on a fairly regular basis. So id advise instead of using time use the fee size needed to get included into the next block.
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ah I see what you mean. Yes, that's a good point. I'll change that in the next update 👍
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It's in the next release :)
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