Comparison

To Do Machine vs Trayzero

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

To Do Machine

Design your ideal productivity system with this highly customizable task manager. It adapts to your unique workflow using natural language commands and AI organization. Seamlessly syncs across Mac and iOS devices.

Highlights
  • Natural language task creation
  • AI-powered organization
  • Customizable views (list, kanban, calendar)
  • Invent custom statuses and fields
  • Two-way calendar sync
  • Instant cross-device sync
  • Personalized productivity system assessment
Features
Read full description

The only productivity app designed just for you. Most to-do apps make you bend to their rules. To Do Machine flips the workshop on its head — open the back panel, swap the parts, paint it your color. Talk to it in plain English and watch your task inbox, your projects, and your entire workflow rebuild themselves in real time. Built natively for Mac and iOS. Perfectly in sync. — WHO IT'S FOR — For the people who've tried every to-do app and bounced off them all. For the ones who keep building systems in Notion, then abandoning them. For anyone whose brain works a specific way and is tired of apps that don't. To Do Machine isn't another opinionated workflow. It's a workshop where you build the one that fits you. — DESIGN IT YOURSELF — Tell To Do Machine what you want and it remakes the app around you. "Make the inbox darker and put due dates on the right" — done. Switch any project to list, kanban, calendar, focus, or blueprint view. Invent your own statuses, fields, and automations, project by project. Every tweak syncs to all your devices instantly. — AI THAT DOES THE ORGAINZING — Just say what's on your mind. To Do Machine writes the tasks, breaks them into projects, sets reminders, and finds time on your calendar — no tapping the + button (if you don't want to). "Plan my Q3" → full project with milestones, weekly check-ins, and time blocks. Auto-triage your inbox: priority, due dates, parent project. Orgainize your tasks in bulk: "Complete all of my overdue tasks and let's start fresh." — CALENDAR IN, DAY OUT — Connect Apple or Google Calendar and your tasks thread themselves between your meetings. Two-way sync with Apple or Google Calendar. Time-blocking that respects your meetings, focus blocks, and breaks. Move a meeting and your tasks move with it. — INSTANTLY SYNCED BETWEEN iOS AND MAC — Tasks, projects, and calendars sync in milliseconds. Custom layouts and themes travel with you. Redesign your inbox on Mac at lunch — it's waiting on your iPhone by the time you stand up. — FREE TRIAL AND PRICING — -A free personalized assessment and recommendation of one of nine proven productivity systems. -Start your free 7-day trial (available with an annual subscription) to unlock full usage of To Do Machine, including task management and system customization. After your trial, task management and system customization is only available on a paid plan. -Pricing starts at $23.99 for three months. -Auto-renewal can be cancelled at any time via Apple subscription settings. Assembled in Brooklyn, NY. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Trayzero

This app implements David Allen's Getting Things Done (GTD) methodology for task management. It offers a streamlined inbox, clarification flow, and organization into canonical GTD lists. Features include reminders, voice capture, and on-device data storage for enhanced privacy.

Highlights
  • GTD inbox and capture
  • Clarify flow for processing tasks
  • Organize into GTD lists
  • Weekly Review wizard
  • Engage tab by context/energy/time
  • On-device data storage
  • Voice and photo capture
Features
Read full description

Get your in-tray to zero with Trayzero, a private, offline task manager built around the Getting Things Done (GTD) method. Capture loose thoughts, turn them into clear next actions, and choose what to do next. Your tasks, notes and attachments are stored on your device. No Trayzero account is required. Every feature is available without a purchase, and there are no ads. Capture what is on your mind Add tasks from anywhere in the app, share text and links into your inbox, or use the Home Screen widget. Dictate a thought with your device's speech recognizer, and attach photos or voice memos. Clarify your inbox Process Inbox guides you through each item: Is it actionable? Can you do it in two minutes? Is it a next action, a project, something to delegate, or something for later? Empty your inbox by deciding what each item means. Organize your commitments Keep Next Actions, Projects, Waiting For, Someday/Maybe, Calendar and Reference in dedicated lists. Give projects an outcome and see which ones need a next action. Use contexts, tags and Areas of Responsibility to organize work and life. Choose the next action Filter actions by context, available time and energy. Build a daily plan and find work that fits the moment, whether you have five minutes at home or an hour at your computer. Keep your system current A guided Weekly Review helps you capture loose ends, clear your inbox, and review actions, waiting items, projects, your calendar and Someday/Maybe. Save your progress and continue later. Remember what matters Set due dates, deferred actions, waiting-for follow-ups and repeating tasks. Reminder notifications offer actions such as Done and Snooze. Optional system-calendar integration works with the calendar you choose. Notification delivery depends on your device permissions and settings. Bring your tasks with you Import supported exports from Todoist, TickTick, Nirvana, Google Tasks, Things 3 and OmniFocus, or paste a plain-text list. On iPhone and iPad, import selected Apple Reminders lists, or connect to Microsoft To Do for a one-time import. Preview before importing and undo an import if needed. Export formats and supported fields vary by source. Own your backups Export and restore portable JSON backups, including attachments. Enable automatic backups to a folder you choose. Backups are unencrypted; if you choose a cloud-synced folder, its provider handles synchronization. Trayzero does not provide cross-device task sync. Privacy with clear choices Your task content is not sent to a Trayzero server. Optional Microsoft imports, system-calendar integration, speech recognition and shared backups use the services you choose. Store builds use RevenueCat for anonymous purchase checks and purchase/customer analytics; your tasks are not included. See the privacy policy for details. Free and open source Light and dark themes, adjustable appearance, and accessibility support are included. Optional tips and a supporter subscription help the independent developer; they do not unlock features. Explore the source at github.com/roman10/trayzero. Trayzero is an independent app, not affiliated with, endorsed by, or sponsored by the David Allen Company. "Getting Things Done" and "GTD" are trademarks of the David Allen Company. Terms of Use (EULA): https://trayzero.app/terms Privacy Policy: https://trayzero.app/privacy

Screenshots

To Do Machine4 screens
Trayzero4 screens

Verdict

The call

The clearest difference is ratings volume: To Do Machine at 12 against Trayzero's 1. Trayzero's advantage is iOS requirement (15.0 vs 17.6). On price, rating, review sentiment and update cadence there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. To Do Machine sells 6 in-app purchases, starting at $7.99 per month and Trayzero sells 4 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Trayzero holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: To Do Machine has 12 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

To Do Machine ships an update every 2 weeks, Trayzero every 4 weeks. Both last shipped on November 10, 2026.

Scorecard2 real differences · 8 level
To Do Machine versus Trayzero: the parameters behind the verdict, then further details
ParameterTo Do MachineTrayzero
PriceFreeFree
Rating4.8 (12 ratings)5.0 (1 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings12 — better1
Update frequencyEvery 2 weeks — betterEvery 4 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFreemium
DevicesiPhone, MaciPhone, iPad, iPod — better
Requires iOS17.615.0 — better
Further details — not scored
Size39 MB42 MB
Age rating17+4+
DeveloperElectric Lantern LLCFeipeng Liu

Customer experience

To Do Machine

All ratings9 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews8 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Trayzero

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

6 purchases

To Do Machine

Subscriptions6
  • Standard7 Days trial$7.991 Month
  • To Do Machine Max7 Days trial$19.991 Month
  • Standard - 3 Months$23.993 Months
Show 3 more
  • Welcome Price7 Days trial$44.991 Year
  • To Do Machine - Annual7 Days trial$69.991 Year
  • To Do Machine Max - Annual7 Days trial$199.991 Year
4 purchases

Trayzero

Subscriptions2
  • Supporter (Monthly)$0.991 Month
  • Supporter (Yearly)$7.991 Year
One-time2
  • Small Tip$1.99
  • Large Tip$9.99

Questions

Is To Do Machine free?
To Do Machine is free to download, with in-app purchases available.
Is Trayzero free?
Trayzero is free to download, with in-app purchases available.
Which has better reviews, To Do Machine or Trayzero?
Trayzero is rated higher. To Do Machine averages 4.8 out of 5 from 12 ratings, while Trayzero averages 5.0 from 1 ratings.
Do To Do Machine or Trayzero have ads?
Neither To Do Machine nor Trayzero shows ads.
Which is updated more often, To Do Machine or Trayzero?
To Do Machine ships an update every 2 weeks, and Trayzero every 4 weeks. Most recently, To Do Machine was updated on November 10, 2026 and Trayzero on November 10, 2026.

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