The Best To-Do List Apps for 2026: What You Should Know About Their Privacy

If you rely on a to-do list app to keep track of your daily tasks, you are not alone. Millions of people use these tools to organize work and personal life. But as we store more sensitive information in them—from project deadlines to grocery lists, and sometimes even passwords or notes—the question of privacy becomes harder to ignore.

A recent review from Wirecutter, the product recommendation site owned by The New York Times, named three to-do list apps as the best of 2026. But which of those apps treat your data carefully? And what should you look for before downloading one? Below, we summarise the review and add a practical privacy lens.

What happened

Wirecutter evaluated dozens of to-do list apps based on features, ease of use, and reliability. Their top three picks are well-known names: Todoist, TickTick, and Microsoft To Do. Each app has its own strengths—Todoist for its natural language input and cross-platform support, TickTick for its built-in pomodoro timer and habit tracking, and Microsoft To Do for its deep integration with Office 365 and simplicity.

The review itself focused on usability and feature completeness, not on data practices. However, for many users, privacy matters just as much as the ability to add a task quickly.

Why it matters

To-do list apps typically sync your data across devices using cloud servers. That means your tasks—and sometimes extra details like due dates, notes, and location reminders—are stored on the company’s infrastructure. Most apps also support integrations with calendars, email, and other services, which can expand the surface area for data exposure.

Here is a quick look at the privacy posture of the three picks, based on publicly available information (as of early 2026):

  • Todoist uses encryption at rest and in transit, and its privacy policy states it does not sell personal data. It offers two‑factor authentication. However, it does not support end‑to‑end encryption for task content, meaning the company (or a third party with access to its servers) could theoretically read your to‑do items. Todoist is owned by Doist, a privately held company based in Chile and the U.S.
  • TickTick also encrypts data in transit and at rest. Its parent company, Appest, is based in China, which raises additional considerations under Chinese data laws. TickTick’s privacy policy is less detailed than Todoist’s, and the app has faced scrutiny in the past over data collection practices. Users who are especially cautious may want to avoid syncing highly sensitive information.
  • Microsoft To Do is integrated with Microsoft’s cloud ecosystem. Data is encrypted both in transit and at rest, and Microsoft provides transparency reports and compliance certifications. However, like Todoist, it does not offer end-to-end encryption for task content. Microsoft’s business model relies less on selling user data and more on subscriptions and enterprise services, but the company does use aggregated data to improve its products.

None of these apps have suffered a major public data breach as of 2025, but no service can guarantee that will remain true.

What readers can do

You do not have to abandon convenience for privacy. Here are practical steps to protect your to-do list data:

  1. Review the privacy policy of whichever app you choose. Look for sections on data sharing, third‑party access, and retention periods. Policies are not always easy to read, but they can reveal important differences.
  2. Enable two‑factor authentication if the app supports it. This adds a strong layer of protection even if your password is compromised.
  3. Be careful with integrations. Connecting your to‑do list to your calendar, email, or smart home devices can expose your task data to additional services. Only connect what you actually need.
  4. Consider using a local‑only app if you rarely need syncing. Apps like Things (for Apple users) or Todo.txt can keep everything on your device. You lose cross‑device access, but you also lose the cloud risk.
  5. Avoid storing sensitive information in task notes or titles. If you need to keep passwords or private notes, use a dedicated password manager or an encrypted notes app instead.

If you are already using one of the Wirecutter‑recommended apps, you are probably in good hands as long as you follow basic security hygiene. But if you handle particularly confidential data—say, client details or legal deadlines—you may want to choose an app that offers true end‑to‑end encryption, such as Standard Notes or any tool built on an open‑source, zero‑knowledge framework. Keep in mind that those apps may lack the polish or integrations of the mainstream options.

Sources

  • Wirecutter, “The 3 Best To‑Do List Apps of 2026” (The New York Times, December 2025). Link to article
  • Privacy policies and security documentation from Todoist, TickTick, and Microsoft To Do (accessed May 2026).
  • General security best practices from consumer protection agencies and cybersecurity researchers.