Yes, there is. While both platforms allow you to store your term policy documents digitally, eIA is specifically created for storing and managing insurance policies. DigiLocker is a platform that can not only store your insurance policies but other legal documents as well (such as driving licence, Aadhaar, PAN, etc.) but you can only view your documents and not carry out any transactions.There is no “this is better than the other over here”. You can choose the platform that you find most convenient or you can even choose to store your policy documents on both platforms.