Trayzero vs Inbox0
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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Trayzero brings David Allen's Getting Things Done (GTD) method to your iPhone. Free, no ads, no account, no sign-up. Your data lives on your device. Always. THE FIVE GTD STEPS, BUILT IN Capture - one tap, anywhere. A floating Capture button on every screen. Share anything from any app straight into your inbox. Voice-to-text for hands-free thoughts. A Home Screen widget for the fastest possible "add to inbox." Clarify - the killer flow. Process Inbox runs you through your captures one at a time, card-stack style. Each card walks the full GTD decision tree: actionable? Two-minute rule? Delegate? Single step or a project? When? Where? You hit inbox-zero faster than you thought possible. Organize - the canonical GTD lists. Inbox, Next Actions, Projects, Waiting For, Someday/Maybe, Calendar, Reference. Plus a real Project type with outcome, next-action warning, and Active / On Hold / Someday / Done / Dropped status. Seven default @-contexts you can extend (@phone, @computer, @errands, @home, @office, @anywhere, @waiting). Areas of Responsibility for the higher altitudes. Reflect - a Weekly Review wizard. A seven-step Friday review walks you through the canonical GTD pass: clear inbox, review next actions, check waiting-for, scan calendar, review someday/maybe, look at projects, set next week's intentions. Daily review supported too. Engage - do now. The Engage tab filters Next Actions by Context, Energy (low / medium / high), and Time Available (under 5m / 15m / 30m / 1h). Pull up the actions that match the moment you're in. REMINDERS THAT ACTUALLY WORK Due-date, defer-until, waiting-for follow-up, and weekly-review nudges fire as system notifications with action buttons - Done, Snooze, Move to Next Actions. Calendar two-way sync mirrors dated items into your system calendar. VOICE, PHOTOS, AUDIO Capture by voice. Attach photos or voice memos to any item. PRIVACY YOU DON'T HAVE TO THINK ABOUT - 100% on-device. SQLite under the hood. - No account, no servers, no analytics. - Crash reporting is opt-in and off by default. - Backup/restore as plain JSON: you own your data, you can take it anywhere. WHO IT'S FOR - GTD practitioners who want a clean, focused app that respects the method. - Anyone tired of cloud-syncing personal task data through someone else's servers. - People who want their tasks where their phone is - and nowhere else. Trayzero is an independent app inspired by the Getting Things Done methodology. It is not affiliated with, endorsed by, or sponsored by 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
Inbox0
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Inbox0 clears your mind. GTD for iPhone, iPad, Mac, and Apple Watch. Capture without thinking. Clarify with intent. Act with focus. Inbox0 implements David Allen's Getting Things Done® method as a calm experience — not an amplified to-do list. Friction-free capture Text, voice, or document scanner with OCR. The Share Extension processes images straight into your Inbox. Capture without choosing a type up front — write it first, organize it later. Clarify with a guided flow Each Inbox item goes through a short, guided process that turns it into a next action, project, reference, waiting-for item, or someday/maybe. Full history with undo. Smart Daily Plan Your daily plan builds itself from your tasks, calendar, estimated energy, and current context. Drag to reorder, complete a block, and the next suggestion appears instantly. Built-in evening reflection. Review with rhythm Six canonical cadences: daily, end-of-day, weekly, monthly, quarterly, and annual — each with its own dedicated steps, not a watered-down version of the next. Resume where you left off if interrupted. Act with context Filter by context (place, person, tool, energy), duration, and date. Optional geofencing: get a notification when you arrive at a location with its relevant tasks. Horizons of Focus Organize projects under Areas of Responsibility and connect them with Objectives and a personal Vision. Journal entries link daily work to long-term purpose. Focus sessions Start a session, filter by your current context and energy, and complete tasks. Inbox0 learns your patterns (best hour, best context, completion rate) and surfaces them as Insights. Sync everywhere CloudKit sync across iPhone, iPad, and Mac. An Apple Watch app to capture and complete from your wrist. Your data stays in your own private iCloud — the developer never sees it. — Inbox0 Pro unlocks the advanced layer: all six canonical reviews, focus sessions (Engage), Horizons (Altitudes), camera capture with OCR, and on-device AI (classification, entity extraction, duplicate detection, semantic search, summaries and coherence). The base experience is complete and unlimited: capture (text and voice), Inbox and Clarify, projects and areas, Today and Next Actions, Daily Plan, Journal, reminders and recurrence, CloudKit sync, widgets, and shortcuts. Plans: Monthly, Annual (with a 7-day free trial), and Lifetime (one-time purchase). Generative AI features require an Apple Intelligence-capable device; other devices fall back gracefully to on-device heuristics. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Getting Things Done® is a registered trademark of the David Allen Company. Inbox0 is not affiliated with or endorsed by the David Allen Company.
Screenshots
Verdict
The clearest difference is update cadence: Trayzero at monthly against Inbox0's every 2 months. Trayzero also leads on iOS requirement (15.0 vs 26.0). On price, ads, in-app purchases and device support 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
Both are free to download. Trayzero sells 4 in-app purchases, starting at $0.99 per month and Inbox0 sells 3 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.
Trayzero ships an update monthly, Inbox0 every 2 months. Both last shipped on October 31, 2026.
| Parameter | Trayzero | Inbox0 |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Monthly — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac, Apple Watch — better |
| Requires iOS | 15.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 39 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | Feipeng Liu | Simon Domingues Santinf |
In-app purchases
Trayzero
- Supporter (Monthly)$0.991 Month
- Supporter (Yearly)$7.991 Year
- Small Tip$1.99
- Large Tip$9.99
Inbox0
- Inbox0 Pro (Monthly)$5.991 Month
- Inbox0 Pro (Yearly)7 Days trial$34.991 Year
- Inbox0 Pro (Lifetime)$119.99





