This app was mentioned in 8 comments, with an average of 1.75 upvotes
https://play.google.com/store/apps/details?id=com.popularapp.videodownloaderforinstagram&hl=en
I personally use the Xposed Module XInsta. You need to be rooted for this.
Video Downloader for Instagram I tried GBinstagram. It installed and everything but never saved any videos when I hit "download". This app works well most of the time.
https://play.google.com/store/apps/details?id=com.popularapp.videodownloaderforinstagram
On Android, this is the app in the playstore
https://play.google.com/store/apps/details?id=com.popularapp.videodownloaderforinstagram
This works for me, works in the background usually, just need to "copy link" in Instagram.
There are repost apps that you can download Instagram videos with.. You'll be able to download it I use https://play.google.com/store/apps/details?id=com.popularapp.videodownloaderforinstagram
depends, if you have a GOOGLE PLAY SUPPORTED PHONE click this link. I use it all the time. it will ask you to log in if the account you're trying to get videos off of is private, just do it it's a safe app
if you use apple search on the app store for instagram downloader and make sure the company is INSHOT
https://play.google.com/store/apps/details?id=com.popularapp.videodownloaderforinstagram