been trying to take better care of myself lately and I really appreciate the variety of health and fitness apps out there that help me visualize my progress
That looks like down to ¹⁄₁₅ of body mass from one year ago, but I'm reasonably sure that the graph's badly presented: I don't see the Y origin line.
@lp0_on_fire Yep, leaving the numbers off is intentional, but the whole point is progress is made.

It's not the missing numbers in general – that's fine. It's more that 0 (specifically) isn't visible.

It's a very good trick for giving the impression that something is significantly better – or worse – than it really is, which I don't think is what you're intending here.

@lp0_on_fire forgot to mention context is body weight not BF so 0 isn’t really relevant

0 is relevant. It provides a base line; scale becomes clear at a glance. Obviously, I don't expect body mass to fall (close) to 0…

(It is true that a few numbers, clearly marked, from a scale proportional to body mass would work, though less obviously so.)