Analytics Area 

1. Later calculates the total unique reach each day.
   Reach over any period will be the sum of the days in that period (including users who saw your post on multiple days).
2. Later calculates average reach.

1. Instagram Insights calculates the number of unique users that saw your post over a certain period of time.
2.  Insights calculates total reach.

1. Later tracks organic (unpaid) impressions only.

1. Insights calculates both organic and paid impressions.

1. Later's Audience analytics are based on the timezone preferences of the Later account.

1. Insights is based on the timezone of your device.

1. Later tracks organic (unpaid) post performance only.
2. Post performance data is gathered for 2 weeks from the time the post is published.

1. Insights tracks both paid and organic post performance.
2. Insights shows the total data since the post was published. 

1. Later tracks organic (unpaid) story performance only.

1. Insights tracks both paid and organic story performance. 

Industry Comparison

1. Later can show how your profile performance compares to other similar profiles in your Performance Report.

1. Instagram doesn’t offer industry comparison.