The 6 best to-do list apps for iPhone in 2026

I couldn't function without my to-do list. If a co-worker, client, or loved one tells me about something that needs to happen, I will take my phone out of my pocket and immediately jot it down—otherwise the thing will never get done.  I've used a lot of iPhone to-do list apps over the years. Part of this is because trying out new apps is literally my job, but part of it is that I've never quite found the perfect app. And, honestly? I don't think the perfect app exists—only the