The Best To-Do List Apps for Privacy in 2026

Your to-do list probably holds more than just groceries and deadlines. Many people store passwords, medical reminders, travel plans, and sensitive work tasks in these apps — often without thinking about who else might see that data. With every sync across devices, the contents of your daily tasks travel through servers that may log, analyze, or even share them.

The latest reviews of to-do apps in 2026, including Wirecutter’s annual update, focus mostly on features, speed, and design. But privacy and security deserve just as much attention. Here’s what the top contenders look like when you prioritize keeping your task data to yourself.

What Happened

Wirecutter published its 2026 roundup of the best to-do list apps, naming three leaders: Todoist, Microsoft To Do, and Things. The reviews covered the usual strengths — collaborative features, cross-platform support, and clean interfaces — but largely passed over how each app handles your data.

Independently, privacy advocates have pointed out that to-do apps often collect metadata (task titles, due dates, project names) that can reveal a surprising amount about your life. A task labeled “Call Dr. about biopsy results” or “Password reset: bank” is plainly sensitive. Yet not all apps treat such entries with the same level of protection.

Why It Matters

Task data is not typically classified as “sensitive” under privacy regulations like health or financial information. That means apps can collect, process, and even sell insights from it with fewer restrictions. According to app privacy labels and policies, some of the top to-do apps share task data with third-party analytics and advertising partners — at least in their free tiers.

For anyone who uses a to-do list for work tasks bound by confidentiality agreements, or for personal health routines, the stakes are clear. A breach or careless data practice could expose details you never intended to share.

Moreover, the shift toward AI features in 2026 — smart suggestions, auto-categorization, natural language parsing — means the app processes even more of your text. The more data the app analyzes, the more it stores, and the more it potentially exposes.

What Readers Can Do

You don’t need to stop using to-do apps. But you should choose one that matches your risk tolerance and adjust the settings accordingly. Here’s a privacy breakdown of the three apps from Wirecutter’s 2026 picks, based on publicly stated practices as of early 2026:

Todoist

  • Encryption: Data is encrypted in transit (TLS) and at rest, but not end-to-end. Todoist’s servers can read your tasks.
  • Data collection: The company states it collects task content for service improvement and has historically shared anonymized data with analytics firms. The paid plan reduces some tracking.
  • Privacy controls: You can delete your account and associated data; they offer export. No local-only mode.

Microsoft To Do

  • Encryption: Uses Microsoft’s standard cloud encryption, which protects data at rest and in transit. However, Microsoft retains access (no end-to-end encryption) and processes data as part of its broader productivity ecosystem.
  • Data collection: Tied to your Microsoft account; task data is used to personalize other Microsoft services (like Cortana suggestions) unless you disable those connections.
  • Privacy controls: You can limit data sharing within your Microsoft privacy dashboard, but the app itself always syncs to the cloud.

Things (by Cultured Code)

  • Encryption: Things syncs via iCloud, which uses end-to-end encryption for most data (including tasks, due dates, and notes). Apple cannot read your task content.
  • Data collection: Cultured Code collects only minimal analytics (crash reports and anonymized usage data). No advertising IDs or third-party tracking in the app.
  • Privacy controls: You can turn off sync entirely and use Things locally on one device. No account required.

Best overall for privacy: Things — provided you’re already in the Apple ecosystem. Its iCloud sync uses end-to-end encryption, and it collects the least amount of personal data. For cross-platform users, Todoist with a paid plan and careful privacy settings is a reasonable compromise, though you trade away full encryption.

Bonus steps you can take with any app:

  • Read the app’s privacy policy (the “data collected” section) and check its iOS/Android privacy label.
  • Turn off optional data sharing and analytics in the app’s settings.
  • Avoid including passwords, PINs, or full names in task titles. Use codes or vague reminders.
  • If you use a shared workspace, be aware that collaborators can see task contents.
  • Delete old tasks periodically; many apps keep deleted items in a trash folder for weeks.
  • Consider a local-first app like Things or a plain-text system if your tasks are extremely sensitive.

Sources

  • Wirecutter, “The 3 Best To-Do List Apps of 2026,” The New York Times, December 2025.
  • Todoist Privacy Policy (2025 version).
  • Microsoft Privacy Statement (2026).
  • Cultured Code Privacy Policy (2026).
  • iOS App Store privacy labels for each app (current as of May 2026).

Note: Encryption practices can change with app updates. Verify the latest settings inside each app before trusting it with particularly sensitive information.