What Reminders will not do

The system in this guide is shaped around Reminders on iPhone and iPad. Knowing the app’s real limits saves you from fighting the software. The guide assumes iOS 27 or iPadOS 27.

There is no hide-until date

OmniFocus-style “defer until Thursday, due Friday” needs two dates. Reminders has one.

What this guide does instead:

  • Actions you could do now are subtasks (or Next items) with a context tag, so the smart lists show them.
  • Actions you must not start are lines in the project notes.
  • A date means “due” or “please also put this in Today on that day”. The context list still shows it early.

If you need both a hidden start and a deadline, write the start in the notes and let the date be the deadline, or use a dated “promote this step” reminder as described in do the work.

Completing a project completes its subtasks

Ticking the parent ticks everything under it. The parent is the outcome, and you tick it at the end. Ticking a subtask leaves the parent open, which is what you want while the project continues.

Smart lists group work under the project

Custom smart lists show subtasks under the project title, not only a “has subtasks” link. Tick the action that carries the tag for the list you opened. If a sibling action from another context is visible because Apple groups the whole project, leave it for its own list.

A tag filter includes reminders that have the tag. It cannot also say “and not this other tag” in a second tag filter. That is why a waiting action replaces its context tag with waiting, and why Someday is a separate list that the smart lists do not read. One tag on a live action is also simpler to keep up.

The web app is the wrong place to run this

iCloud.com can show lists, but the pieces this system uses day to day are phone-and-tablet behaviours: When Messaging, location alerts, widgets, the share sheet, Siri, and the way smart lists present subtasks. You can glance at a list in a browser. Set the system up and run the review on your iPhone or iPad.

The Action button and some Lock Screen capture options are iPhone-only. On iPad, use the widget, Siri, the share sheet, Control Centre, or the app icon.

The Mac app can edit the same iCloud lists. The instructions here follow the iPhone and iPad controls on purpose, because list types, filters, and subtasks are easy to mis-tap when a guide mixes two interfaces.

Calendar is the hard landscape

Scheduled reminders can appear in the Calendar app beside events. Use Calendar for things that happen at a time and place: the dentist appointment itself. Use a reminder for the action that gets you there: “Call dentist and book a checkup”. When the appointment exists, the call is done.

Reference is not a reminder

Reminders is a poor filing cabinet. Notes, Files, and the apps that already hold the document are the reference system. A reminder may contain a URL or a scan of a letter you need in order to do the action. The letter is still not a project.

A sentence can smuggle in a date

Apple Intelligence can turn “tomorrow at 4” in the title into a real due date as you type, on a supported device (for example iPhone 15 Pro or later, or an iPad with Apple Intelligence). Glance at the metadata box before you tap Done. A date you did not choose is still a date, and it will show up in Today.

Auto-Categorize will rename your areas

Projects uses sections as areas of responsibility. Auto-Categorize builds its own sections. Leave it off on the GTD lists. The grocery list is where Apple’s automatic sorting belongs.

Tags will not rescue a skipped review

A new tag feels like progress and leaves the underlying lists just as stale. If the system feels heavy, remove an optional tag before you add one, and do a short review: Inbox, projects missing a subtask, Waiting.