Google Tasks on iOS

I can make do doing it by hand. ButI am an attorney. and I organize tasks by client name. So when I have my brainstorming sessions (with myself) for each case, I am entering in maybe 5 to 12 cases at a time. then I use the last name to start each actual task…in case I "disorganize" the list somehow….and indent the task to the parent name. It would be nice at the conclusion of the brainstorming to 'hit a switch' and have the parent tasks a-z. having the subordinate tasks follow the parent task releives the necessity of that sorting somewhat. For task organization I only use the IPad because the google task igoogle and the 'work in progress' google task only for the computer are so small as to be unusable. The smartphone screen size is to small to use as a work area (for old timer me at least)…it is usful as a check when I am in a store or if my IPad is unaccessable… … your program…is what I use because it is accessable on all devices… including my part-time secretary's computer. … I have checked may of the other programs / apps that claim to do what this program does…and this has the largest working IPad screen … also, the email and calendar intrigration are not important to me…because the consistent relaibilty / usabillity / accessibility are the most important… coloring of tasks would be nice…and is something I could use to designate urgency of task completion….assignment to my secretary or to me..waiting for responce..etc.