The Best To-Do List Apps of 2026: Which Ones Protect Your Privacy?
A to-do list app holds a surprising amount of personal data—your daily routines, work projects, home errands, even health reminders and shared family tasks. Yet most people never look past the feature list when choosing one. If you care about where that data goes and who can see it, a security-minded comparison is overdue.
What happened
In late 2025, Wirecutter updated its long-running review of to-do list apps and named Todoist its top pick for the third consecutive year. The review praised Todoist for its balance of features, cross-platform support, and reliability. But it did not evaluate the apps primarily on privacy or encryption—understandably, as Wirecutter targets general productivity. Meanwhile, several other major apps have made changes that affect how they handle your tasks.
Around the same time, privacy-focused users began noticing that some apps had tightened data-sharing policies while others had not. TickTick, for example, introduced encrypted local storage in some plans. Microsoft To Do continued to rely on OneDrive sync with encryption at rest but no end-to-end protection. Things 3 remained stubbornly local-only, sacrificing syncing for safety. And Any.do, which had faced criticism for data-sharing practices in earlier years, updated its privacy policy in ways that still left questions open.
None of these changes made headlines, but they matter for anyone who treats their task list as sensitive information.
Why it matters
Your to-do lists can reveal a lot about you: when you plan to travel, what health appointments you have, which work projects are priorities, and personal goals you may not want broadcast. This data is valuable to advertisers and potentially to bad actors if an app’s security is weak.
Most to-do apps, including Todoist, sync your data to their servers. Even if the company claims to protect your privacy, you are trusting them with the contents of your lists. Only a handful of apps offer end-to-end encryption, meaning the company itself cannot read your data. For most users, the question is whether they are comfortable with the default level of access the app has to their tasks.
The Wirecutter review rightly focuses on usability and reliability. But it does not surface that Todoist, despite being a strong app, stores your tasks on its servers in a readable form and has historically used that data for machine learning improvements unless you opt out. Similarly, Microsoft To Do syncs through OneDrive, which is encrypted at rest but accessible to Microsoft under certain conditions.
What readers can do
If you want to choose a to-do app based on privacy, here is a practical shortlist based on current information (note that policies change, and what is true today may not be tomorrow):
- Best for maximum privacy: Things 3 (Apple only). Stores everything locally on your device. No cloud, no syncing (except via Apple’s iCloud, which offers end-to-end encryption if you enable Advanced Data Protection). The trade-off is no web access or Android support.
- Best for cross-platform with reasonable security: Todoist. It does not offer end-to-end encryption, but it does support two-factor authentication, and you can opt out of data use for training. For most people, this is an acceptable middle ground. Check the latest privacy settings.
- Best for encrypted sync: TickTick. In some subscription tiers, TickTick allows you to store task data encrypted locally before syncing. Verify whether your plan includes this; the feature is not always on by default.
- Avoid if you are sensitive about data sharing: Any.do. The company has been less transparent about data practices than its competitors. Unless you fully trust the latest policy, it is safer to choose an alternative.
Regardless of which app you use, take these steps:
- Enable two-factor authentication (2FA) if available. It prevents someone who obtains your password from accessing your tasks.
- Review the app’s privacy policy and data-sharing settings. Look for sections on “data use” and “third-party sharing.”
- Consider using a local-only app for truly sensitive lists—even a text file in an encrypted folder can be more private than any cloud synced service.
- If you sync, use an app that offers end-to-end encryption or pair it with a secure cloud provider that supports it (for example, iCloud with Advanced Data Protection for Things).
The Wirecutter review remains a solid starting point for features. But if privacy is a priority, you may need to look beyond its top pick.
Sources
- Wirecutter, “The 3 Best To-Do List Apps of 2026,” December 2025 (review available at the New York Times).
- TickTick official documentation on local encryption (confirm for your current version).
- Microsoft To Do security whitepaper, Microsoft.
- Any.do privacy policy, latest revision.
- Things 3 user guide on local storage and iCloud sync.