Jottr is an expense tallying app which runs purely on email, by using specific subject lines.
For more info, email email@example.com with subject as 'help'
Jottr lets you tally all the expenses incurred in a group by sending emails from one email id. No signups. No downloads. 100% free.
Tell us how are you using it. We love to hear from you. Mail us at firstname.lastname@example.org