I would like to create a similar icon to one used in another software (e.g. the "Share" icon on iOS, or the "Crop" tool in Photoshop).
My icons are not going to be pixel-wise identical to the reference icons, but they may appear very similar to users.
Is it legal to do so?
Please note that there is no intention to copy the general look of another software, and there is even no intention make the entire icon set in my software similar to a reference software.