Comparison

Trayzero vs Onda

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

Head to head
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

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

About

Onda

Features
Read full description

Private AI that runs locally on your iPhone—no account or cloud required. Chat offline with downloaded models. Ask questions about PDFs and documents, analyze photos, and let Smart Match choose the best model for your device. For larger models, connect to your own Mac. Your prompts stay on devices you control. WHY ONDA • Private by design — local conversations are processed on your device. • Works offline — use downloaded models without an internet connection. • No account or sign-up. • Choose from supported open models, including Llama, Mistral, Qwen, Phi, and more. LOCAL AI CHAT • Fast, streaming responses in a clean native interface. • Markdown, code blocks, copy, retry, and edit. • Search, pin, and archive conversations. SMART MATCH — ONDA PRO Onda benchmarks your device and recommends a model for speed, quality, or balance, with clear scores for memory and performance. PDFS, DOCUMENTS & PHOTOS — ONDA PRO Attach an image or document and ask questions without sending it to a third-party cloud service. PERSONALIZE ONDA — ONDA PRO Create personas and store response preferences locally. USE YOUR MAC — ONDA PRO Pair with Onda on your Mac to run larger models over encrypted HTTPS or Tailscale. Processing happens on devices you control. ONDA PRO Models remain free to download and run. Pro unlocks Smart Match, benchmarking, vision, document chat, personas, remote Mac access, and unlimited history. Monthly and annual subscriptions renew automatically unless canceled at least 24 hours before renewal. A lifetime unlock is also available as a one-time purchase. Manage or cancel subscriptions in your App Store account settings. No ads. No trackers. No Onda account. Terms of Use (EULA): https://jtrlabs.com/Onda/terms Privacy Policy: https://jtrlabs.com/Onda/privacy

Screenshots

Trayzero4 screens
Onda4 screens

Verdict

The call

The clearest difference is update cadence: Onda at every 4 days against Trayzero's monthly. Trayzero's advantage is iOS requirement (15.0 vs 17.0). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Trayzero sells 4 in-app purchases, starting at $0.99 per month and Onda sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Trayzero ships an update monthly, Onda every 4 days. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

Scorecard2 real differences · 8 level
Trayzero versus Onda: the parameters behind the verdict, then further details
ParameterTrayzeroOnda
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyMonthlyEvery 4 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS15.0 — better17.0
Further details — not scored
Size39 MB39 MB
Age rating4+17+
DeveloperFeipeng LiuJTR Labs LLC

In-app purchases

4 purchases

Trayzero

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

Onda

Subscriptions2
  • Onda Pro Monthly7 Days trial$4.991 Month
  • Onda Pro Annual7 Days trial$29.991 Year
One-time1
  • Onda Pro Lifetime$79.99

Questions

Is Trayzero free?
Trayzero is free to download, with in-app purchases available.
Is Onda free?
Onda is free to download, with in-app purchases available.
Do Trayzero or Onda have ads?
Neither Trayzero nor Onda shows ads.
Which is updated more often, Trayzero or Onda?
Trayzero ships an update monthly, and Onda every 4 days. Most recently, Trayzero was updated on October 24, 2026 and Onda on October 28, 2026.

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