The 1.6.1 version of PhotoGrids for Instagram for Mac was available to download on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. We recommend checking the downloaded files with any free antivirus. The actual developer of this free software for Mac is Uploader for Instagram. The application lies within Communication Tools, more precisely Social & Blogging.
From the developer:
PhotoGrids for Instagram provides you with a convenient Instagram experience on your Mac. Besides viewing feeds, popular and nearby photos and videos, you can also like and comment photos and videos from Instagram directly on your Mac. PhotoGrid for Instagram is a 3rd-party app and is not affiliated with Instagram whatsoever.
You may want to check out more Mac applications, such as PhotoFlume for Instagram, GWPhoto for Instagram or PhotoGrid, which might be related to PhotoGrids for Instagram.
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