What are some alternatives?
When comparing DownloadIG.com and DownloadGram, you can also consider the following products
GramPhotos.com - View Instagram Full Size Profile Pictures
GramDownloadz.com - Instagram Post Downloader
GramDL.com - Instagram Photo & Video Downloader
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!
Save-o-gram - Start saving your favorite Instagram photos and videos!
Toolswow Instagram Downloader - Download photo or video from an Instagram page