They should have introduced this app during the previous bull, when the platform's hype was still so high. One reason I have never fancied using Uniswap to trade was initially because of the insane ethereum gas fees, and then there is away I hate using the Ethereum copy-cat chains.
I mean there was really no need of it tho, if you use apps like Zerion/Zapper (couple popular ones of many) to make a swap, they will aggregate data from various dexes including uniswap and will give you the best price.
Aggregators are much better in my experience, I was swapping USDC to ARB on arbitrum couple days ago, uniswap shown about $10 gas fee which is insane even by ethereum standards, then I went to Camelot dex aggregator and paid about half dollar to complete swap.
Since metamask extension can be used on android with extension supported browsers so I prefer web aggregators than installing apps, nonetheless, zerion/zapper works just as good.