What are some alternatives?
When comparing 4Ins.top and Save-o-gram, you can also consider the following products
JustForLink - Simple way to download photos from Instagram to your Mac, PC, tablet or phone from any browsers.
4K Stogram - Free Instagram Downloader for macOS, PC and Linux. Search, download or backup Instagram photos shared by any user. Follow your favorite photographers and stay tuned!
Instaoffline.net - Download and save videos & pictures from Instagram quickly and easily.
GramPhotoz.com - View & Download Full Size Instagram User Pictures
Instagram Downloader - Download instagram photos and videos for free
Insta Dp - With InstaDp you can view instagram profile picture for free in full(original) size and download it right away.