Restaurant Waiting app

a)I am looking for a web app which can be used for waiting management @ Restaurant . something like : [login to view URL] b) I am looking for 2 outputs , 1 as sas model & 2 strip down version that i can give to 1 restaurant (pls estimate separately for both) c)This is the base functionality that we need would like included in the quote.(twilio can be used for sms or something else) : ? Add parties to the queue, specifying party size, estimated wait time, etc ? Specify a unique seating area, table assignment or notes for each party ? Notify parties via text message when their tables are ready ? Read text message replies from parties in the Messages inbox ? Compare current versus quoted wait times ? Restore recently seated/removed parties from the History if necessary ? Keep all hosts in sync with multiple devices ( can we have ipad & mobile version also , pls estimate as additional) Ability to quickly reference when a customer (individual - group) requested a table and the amount of time they have been waiting to be seated A time counter for 5 key tables in the restaurant that provides the user with the time the customer was sate and how long they have been seated at a table. Extra : Ability to setup more than one restaurant locations & manage via single admin user & multiple other users .