Route Drawing App?

I've been told that there as an app available from MP that allows one to draw route lines, bolt locations, belay stations, etc. on JPEG files. Is this true? Is it part of the regular Android and Mac available for phones?

When you upload a picture, you have the option to draw topo on it. I guess you could right-click and save-as the marked-up version.

It only works on the web, not the iOS or Android app.  When you upload a photo to a route or area, you are given the option to draw lines, bolts, etc on the photo.  That data is later editable, should things change or if you make a mistake, and the data is a separate "layer" in the photo, so you can turn it on and off.

Here's an example: mountainproject.com/photo/1…

Would be nice to delete or undo from phone

When not on MP what program/app do people use to draw topos on photos?

Ken Duncan wrote: When not on MP what program/app do people use to draw topos on photos?

I use Instagram as if I'm posting to an Instagram story. Then just save it to my device instead of posting. I'm sure there are better apps but I know IG, it' simple and works.