The best alternatives to Dogether are Kin, Checklist for iMessage, and ToDoBot. If these 3 options don't work for you, we've listed a few more alternatives below.
Collaborate on a grocery list, chores list, list to prepare your holiday or any other checklist. Simply create lists, share them via iMessage and start ticking off items together. It's now easy to be organised and get things done together.
ToDoBot is a productivity app that helps you and your team to work better, organize, and prioritize work without leaving Slack. Create ToDos for yourself and your team for each channel or direct message to get things done.
Very simple Todo List web app that allows you to share lists with anyone with just a link, attach images to items as well as save these lists either to the browser or to your account.