No, this phrase is never correct in English. You can see, "The tool will be better over time / in time / after awhile / at some point" (and so on).

No, you can't. Do mean 'The tool will improve with time' or 'The tool will improve as time goes on' ?

Yes Abdou, that is a common idiom. "Somewhere along the line I became unhappy." "We can't do it now, but we'll do it somewhere along the line."

Maybe you can use a long the line , but I don't know if it gives the same meaning . I have heard someone says " but somewhere a lone the line you changed , you stopped being you " .