• The subscription form of ImpactStory ($60/year) draws on numerous sources of existing data to compile an overview of your overall impact. The free version draws on your ORCID identifier and Twitter feed to compile a more abbreviated overview of your impact. Here is mine as an example.
  • Altmetric tracks more diverse sources and thus provides more granular data about the context in which your work was cited (who, where, how, when etc.) It provides this information at the publication-level rather than at the scholar-level (like ImpactStory)—a task made easier by the Altmetric bookmarklet. So, for example, here is the Altmetric data for one of my recent publications.
  • Plum Analytics was acquired by Elsevier and seems more oriented towards selling larger research institutions altmetric data related to comparing researchers and institutions.