Nice Repost let you repost photos and videos. Also lets you save Instagram photos to your phone. Save your favorites captions and hashtags for later use.

You should credit original content creators when reposting to respect the rights of the users. Make sure you have their permissions to use their photo/video.

Disclaimer:
1. This app is not affiliated with Instagram.
2. Any unauthorized action or repost of photo/video and/or violations of Intellectual property rights are the sole responsibility of the user.
3. Respect the rights of the users.