...so you could interpret "emojielog" as "Picture-Character Picture Log".
(...the "Select a Emojie for today" text kinda disproves that this was the intention, though...)
or just emoji e-log as emoji electronic log
I am aware of the etymology of emoji; I think your interpretation goes well beyond "fair", all the way to "wildly reaching". It also doesn't explain the "emojie" in "a simple emojie journal" unless you want to make a case for "picture-character picture".
Thanks for bringing it up. I will make sure to make the spelling changes :)