The Psychological Difference Between Freemium & Free Trial Plans
layeredthoughts.com
layeredthoughts.com
My product (and this is in no way a comparison on product value to evernote) produces keyword analysis results nearly immediately, so the value can be realized a lot sooner and the user can incorporate my product into their workflow a lot sooner than something like evernote.
Also, as Evernote limits by total storage space in the free plan, it's comparable to what we used to do with total keywords for a free trial (before our freemium).