Functions
Account
create account
user info
login
account relationships
trip preference
friends
follow
(post) activity plan
basic
create
edit
add members
components
date
country, (city)
visited places
ratings and comments
transportation between
time
comments
photos
privacy settings
(browse) activity plan
search
rate and comment #
date range
country/ city
visited places
tags
budget
budget
# days
share (to other platforms)
suggest activity plan
input
city
date
interested places
database
user preference
places
location
category
ratings
output
plan with specified places + suggested
hotel?
chat room
budget record
suggested (but not on plan) places
copy
booking api?
flight/train booking api?
online payment? #
achieved or not