Yes– if you've left a comment on a post and noticed a typo or want to change what you wrote, you can edit the comment.
On web:
1. Select the three dots underneath your comment and select "Edit".
2. Once you make your change, an edit status with a time stamp will appear next to your name on the comment.
On the iOS app:
1. On the iOS app, tap the three dots below your comment and select "Edit".
Note: Edits can only be made shortly after posting a comment. If you do not see the "edit comment" option, the window to make changes has passed. At this time, editing comments on a post on the Substack Android app is not available.