This app was mentioned in 7 comments, with an average of 1.14 upvotes
I have an android link: https://play.google.com/store/apps/details?id=com.beliefengine.handyapp&hl=en
And I also use Pose Tool 3D. It is a full body with musles or skin, and the same lighting you can adjust with a perspective grid that is 8 heads tall, iirc. But since it takes longer to set up, it is usually easier for me to take a photo of myself. But it has been really useful for figuring out poses and lighting.
https://play.google.com/store/apps/details?id=com.alienthink.posetool3d
EDIT: I also just started using bluestacks. A windows 10 android emulator. So I can use android apps on my 2nd monitor as reference while drawing. A lot easier posing things with the mouse as well.
Btw for reference you can use handy app https://play.google.com/store/apps/details?id=com.beliefengine.handyapp
Sketchfab for sure. If you make an acccount, you can keep groups of images together. So each project gets it's own collection.
I also like fashion blogs for sketching:
https://tokyo-fashion.tumblr.com/
https://www.thesartorialist.com/
Figure drawing practice:
Lighting of the face:
http://www.photoworkshop.com/pages/light_cage.html
Reddit is also a great place:
Multireddit I made with the P for slideshow:NSFW https://www.redditp.com/user/sammlerworks/m/figuredrawing/
NSFW https://www.redditp.com/user/sammlerworks/m/drawingpractice
Or any subreddit with the added P. Really helps when you are precticing something spacific or need random inspiration:
https://www.redditp.com/r/feet
https://www.redditp.com/r/portraits
https://www.redditp.com/r/carporn/
For action poses (I suggest light reference because it is so easy to fall into the uncanny valley):
https://figurosity.com/quick-poses
For muslces and action poses:
APPS:
Handy is worth the money IMO, and has been getting updates, like items (gun, bat, etc...) Has hands and heads in 3d with adjustable lighting. Heads/hands can be moved and rotated in 3d. Plane heads, female/male, recent update added skin tones.
https://play.google.com/store/apps/details?id=com.beliefengine.handyapp
Post tool 3D (and also Horse Pose Tool 3D) is pretty good. But very difficult to use. I prefer the artist maniquien I bought, but out and about, this app comes in handy when you just need something close enough. Updates included skeleton fgures, already had musles, then skin. Included grid is great, and you can put your posed figure ontop of the camera image live.
https://play.google.com/store/apps/details?id=com.alienthink.posetool3d
Для первого ступора, для последующих.