Time doesn’t always go on the x-axis, but it is expected that the “independent” variable goes there, which is time in this case. This orientation does make it a lot more readable on mobile though in portrait mode, but the slider is unreadable in the mode. Which means it should probably assume landscape mode anyways, in which case x=year would be better. Given the “x-axis” is at the top on the original, I think you are intended to look at it sideways (like a full page landscape graph in print form), such the the left side is the x-axis? But the %s being at the bottom of the new one make it harder to see that label (on mobile at least) and changes what is the implied x and y axis.
But if the independent variable was “words in a book” and you were using that to predict time needed to complete the book, time should be on the y-axis.
For me, it took me several months to use the 100 trial searches. Paying $5/month for like 20 searches isn’t worth it for me. Also just not into getting more subscriptions… wouldn’t matter if it was just 50 cents/month for the basic plan. If they had one-time-payment no-expiration option like 1000 searches for $10, I’d probably lean towards getting that.