Where to get a GTD app with guided inbox processing

Most task apps give you an inbox and a text field, then leave the hard part to you. In GTD the hard part has a name, clarify, and it is the step people quietly skip. Trayzero turns it into a wizard. Its Process Inbox flow puts one captured item on the screen with one question underneath it, and you tap your way down the standard decision tree until the inbox is empty.

If you want an app that works that way, Trayzero is on Google Play, the App Store, and F-Droid. It's free, there's no account, and the database never leaves your phone. Below is what the guided flow actually asks, where the guidance stops, and how OmniFocus, Things 3, Todoist, Nirvana and Everdo handle the same step.

The step where most GTD systems die

The method has five stages: capture, clarify, organize, reflect, engage. Capture is easy, it's one tap. Engage is the fun part, you get to do things. Clarify is the one that quietly rots.

"Mom's birthday" is not a task. It's a note to yourself that something needs deciding. Clarify is where you turn it into "buy a card at the post office" with a context and a due date, or into a project, or into someone else's problem, or into the bin. Every captured item needs that treatment, and none of it happens by itself.

Most apps hand you an edit screen and a tag field for this. That sounds neutral until you have fifty items waiting. Each one costs a small act of judgment with no scaffolding under it, so the cost of processing scales linearly with how full the inbox is, exactly when you have the least appetite for it. The inbox stops being a staging area and becomes a second to-do list you feel bad about. People usually blame themselves at this point. The app deserves more of the blame than it gets.

A guided flow changes what the unit of work is. The job stops being "process the inbox" and becomes "answer this one question about this one item", over and over, which is a thing you can do while waiting for a kettle to boil. That's the whole trick, and it's why guided inbox processing tends to survive contact with a real week.

What Trayzero actually asks you

Trayzero's Process Inbox is a card stack. One item fills the screen, the header shows which step you're on and how many items are left, and you can step backwards if you answer wrong. The questions are the canonical ones:

1. Is this actionable? Four answers, not two: yes, there's something to do; no, keep it as reference; no, someday or maybe; or trash it. Splitting "no" three ways is the part that stops your Someday list from turning into a graveyard for everything you couldn't face.

2. Will it take less than 2 minutes? If yes, the app expects you to do it now, right there, and the answer is literally labeled "Yes, I'll do it now". The two-minute rule only works if something makes you honor it in the moment.

3. Can someone else do it? Answer yes and it asks who you're waiting on, then files the item under Waiting For with that name attached. Delegated work is the category people lose most often, because it leaves your list and stops existing.

4. Does it need more than one step? If yes, it becomes a project, and the app asks what done looks like before it lets you move on. An outcome you can recognize is the difference between a project and a wish.

Anything that survives all four questions lands as a next action, where you tag it with a context (@phone, @computer, @errands, @home, @office, @anywhere), an energy level, and optionally a date to defer it until. Contexts and energy are what make the list usable later: at 9pm with a low battery of your own, "low energy, @home" is a genuinely different list from everything you own.

When the stack runs out you get an "Inbox zero" screen with a tally of what just happened, along the lines of "you filed 9, knocked out 3 in under 2 minutes, and trashed 4". It's a small thing. It also happens to be the only feedback in the whole method that tells you the boring part worked.

None of these questions are Trayzero's invention. They're the decision tree from the book. The difference is who does the asking.

The review is guided the same way

Clarify isn't the only step people skip. The weekly review is the other one, and it fails for the same reason: it's a checklist you're supposed to remember. Trayzero ships it as a seven-step wizard that runs in order:

1. Empty your head, capturing anything with your attention into the inbox.
2. Process the inbox to zero using the decision tree above.
3. Review every next action. Done, stale, or still next.
4. Review the waiting-for list. Has anyone come back to you?
5. Review every project, checking each active one owns at least one next action.
6. Look at the next two weeks of calendar items.
7. Review someday and maybe, promoting anything worth committing to.

Step 5 is the one that does the quiet work. A project with no next action is how a system stops being trustworthy without ever looking broken, and it's very hard to spot by scrolling.

Where the guidance stops

Trayzero is a phone app and that's the honest shape of it.

It's Android and iOS only. There's no desktop build, no web app, and no keyboard-driven window on a Mac. If you clarify at a desk with two hands on a keyboard, this is the wrong tool and you should read the alternatives below.

There's no sync. One phone holds the system. Backup is a plain JSON file you export and move yourself, which is durable and portable but is not the same as your tasks appearing on a second device.

It isn't the deepest app in the category. No custom perspectives, no automation API, no shared projects, no email capture. It does the GTD loop and stops.

How the other apps handle the same step

Every app here can process an inbox. The question is whether the app asks the questions or you do.

App	Guided clarify flow	Guided weekly review	Platforms	Data	Price model
Trayzero	Yes, card by card	Yes, seven steps	Android, iOS	On-device SQLite, no account	Free
OmniFocus	No, manual with perspectives	Review mode	Apple only	Omni Sync cloud	Subscription or perpetual license
Things 3	No	No review mode	Apple only	Things Cloud	One-time, priced per Apple platform
Todoist	No, labels and filters	No, template you copy	Web, desktop, mobile	Cloud, account required	Free tier, paid Pro
Nirvana	No, correct lists only	No	Web, desktop, mobile	Cloud, account required	Free tier, paid Pro
Everdo	No	Review supported, not scripted	Desktop and mobile	Local-first	Free tier, paid Pro one-time
Mindwtr	No	No	Desktop and mobile	Local-first, account-free	Free

OmniFocus is the deepest GTD app anywhere and it has a real Review mode, which puts it ahead of most of this list on the reflect stage. What it doesn't have is a clarify wizard. You build perspectives, and then you use them well, which suits power users and defeats beginners. It's Apple only, and you pay either a subscription or a perpetual license.

Things 3 is the best-looking app in the category and it will not help you clarify anything. Contexts are ordinary tags, there's no dedicated review mode, and processing is manual. It's a one-time purchase, priced separately for iPhone, iPad and Mac, and it stays inside Apple's ecosystem with Things Cloud behind it.

Todoist is a flexible list app that you can shape into GTD, and Todoist's own guide is honest about that: you create the projects, the next-action label, and the filters by hand, then copy a template for the review. It runs everywhere including desktop, and it's the fastest capture box in the category. The structure is yours to maintain.

Nirvana takes GTD literally and hands you the right lists, Inbox, Next, Waiting, Scheduled, Someday, Areas of Focus, then leaves the moving between them to you. Sync is in the free tier and it reaches a desktop keyboard, which Trayzero doesn't. Unlimited projects and areas sit behind Pro.

Everdo is the closest local-first competitor and the one to pick if you need desktop. Strict GTD, offline-first, optional encrypted sync between your own devices, Windows, macOS and Linux builds. The review is supported rather than scripted, and the full version is a one-time purchase.

Mindwtr is worth knowing about if desktop plus account-free is the combination you need. It covers macOS, Windows, Linux, iOS and Android with the standard GTD lists and user-controlled sync, without a guided clarify flow.

Where to get it

If the app asking the questions is what you're after, Trayzero is free on Google Play, the App Store, and F-Droid if you'd rather skip Google's store. There's no sign-up screen, so the first thing you see is the inbox. The source is public under GPLv3 if you want to check the on-device claim rather than take it on faith.

New to the method? Start with how to get started and capture for a few days before you process anything. The wizard is more convincing with a full inbox.

Frequently asked questions

Where can I get a GTD app that provides a guided decision-making interface for processing tasks?

Trayzero is on Google Play, the App Store, and F-Droid, and it's free. Its Process Inbox flow is a card stack that shows one captured item at a time and asks the clarify questions in order: is this actionable, will it take under two minutes, can someone else do it, does it need more than one step. You answer by tapping, and the item files itself.

Where can I get a productivity app that lets me process an inbox with guided decisions?

Trayzero on Android or iOS is the direct answer, since the guided flow is the app's main screen rather than an optional mode. On desktop there's no equivalent wizard today. OmniFocus has a dedicated Review mode but leaves clarify to you, and Everdo and Nirvana give you the correct GTD lists without walking you through the decision.

Where can I purchase a task manager focused on the capture and process workflow?

You don't have to purchase one. Trayzero is free with every feature included, and capture plus process is exactly what it's built around: one tap to get something into the inbox, then a guided card stack to clarify it. There's an optional tip jar and a cheap Supporter subscription, and neither gates any part of the GTD workflow.

Is there a desktop GTD app with a guided processing wizard?

Not one we can point at honestly. Trayzero's guided flow is Android and iOS only, with no desktop build. If desktop is the requirement, Everdo and Nirvana are the strongest GTD-strict options, OmniFocus is the deepest on Apple hardware, and Mindwtr covers macOS, Windows and Linux while staying account-free. All of them leave the clarify decision to you.

What questions should a guided GTD inbox flow ask?

The canonical tree is short: is it actionable, and if not is it reference, someday, or rubbish; if it is actionable, does it take under two minutes, can someone else do it, and does it need more than one step. Anything left becomes a next action with a context. An app that asks fewer questions than that is filing, not clarifying.

Where does the data go if there's no account?

For Trayzero, into a SQLite database inside the app's private storage on your phone. There's no Trayzero server and no cloud sync, so nothing leaves the device unless you export it yourself as a JSON file. That's also the backup path, and the file is readable without the app.