Tasks.org
Open-source Android to-do lists, recurring reminders, and privacy-friendly sync.
Pi Reminder is a cross-device reminder and task app for Android, web, and Chrome, with recurring reminders, reminders for others, public reminders, and selected messaging/workplace integrations.
Open-source Android to-do lists, recurring reminders, and privacy-friendly sync.
Cross-platform to-do lists, recurring tasks, reminders, and shared projects.
Simple task lists and reminders tied to Microsoft and Outlook workflows.
All-in-one task list, calendar, reminders, habits, and focus planning.
To-do lists, calendar planning, reminders, family boards, and team tasks.
Native Apple reminders, shared lists, Siri capture, and iCloud sync.
Simple Google-connected to-dos, due dates, and task notifications.
Pi Reminder is a reminder and task management app focused on time-based alerts, repeating reminders, reminders for other people, public reminders, and syncing between Android, web, and a Chrome extension. It can suit users who want more than a basic alarm app, especially if they like social or team-style reminders. Alternatives may be better for users who need stronger calendar views, Apple or Microsoft ecosystem support, open-source Android software, richer collaboration, or a simpler personal task list.
Pi Reminder helps users create reminders and tasks for themselves or others. Official sources describe recurring reminders, multiple alerts, task status markers, Android and browser sync, public reminders, and integrations or bots for services such as email, Slack, Google Chat, Webex, Skype, Messenger, and Twitter/X.
Users may compare alternatives if they need iPhone support, a native desktop app, deeper project views, cleaner collaboration, stronger privacy controls, or a reminder app tied to an existing ecosystem such as Microsoft, Google, or Apple. Some alternatives focus on simple personal lists, while others are broader productivity suites.
Pi Reminder appears free to start, with ads, in-app purchases, and Plus features mentioned in official store material. Verify current pricing inside the app or on official pages.
Use official app stores or the developer site, and review permissions for contacts, calendar access, microphone use, notifications, and account sign-in.
Last updated: 2026-07-03
Source review records support this guide. Features, pricing, platform support, and availability can still change after publication.
Compare the product information currently available, then confirm current features, plans, and availability with each provider.
| Tool | Best for | License | Platforms | Pricing note | Links |
|---|---|---|---|---|---|
| Todoist | Cross-platform to-do lists, recurring tasks, reminders, and shared projects. | Subscription, Free, Freemium +1 | Web, Windows, macOS, iOS, iPadOS +2 | Free plan available; Pro and Business are paid subscriptions. Verify current limits and prices on Todoist's pricing page. | View guide for Todoist |
| TickTick | All-in-one task list, calendar, reminders, habits, and focus planning. | Subscription, Free, Freemium | Web, Windows, macOS, iOS, iPadOS +2 | Free plan and Premium upgrade are offered; verify current Premium pricing on the official upgrade page. | Official site for TickTick |
| Microsoft To Do | Simple task lists and reminders tied to Microsoft and Outlook workflows. | Free | Web, Windows, macOS, iOS, iPadOS +1 | Microsoft describes To Do as free; Microsoft account or organization policies may affect access. | Official site for Microsoft To Do |
| Google Tasks | Simple Google-connected to-dos, due dates, and task notifications. | Free | Web, iOS, iPadOS, Android | Available with Google accounts and Google Workspace; organization settings may affect availability. | Official site for Google Tasks |
| Apple Reminders | Native Apple reminders, shared lists, Siri capture, and iCloud sync. | Free | Web, macOS, iOS, iPadOS | Included with Apple devices and iCloud access; iCloud storage or account requirements may apply. | Official site for Apple Reminders |
| Any.do | To-do lists, calendar planning, reminders, family boards, and team tasks. | Subscription, Freemium | Web, Windows, macOS, iOS, iPadOS +1 | Free personal plan is advertised; Premium, Family, and Workspace plans add more features. Verify current plan limits. | Official site for Any.do |
| Remember The Milk | Classic cross-platform to-do lists with smart lists, repeats, and reminders. | Subscription, Freemium, Commercial | Web, Windows, macOS, iOS, iPadOS +2 | Free accounts are offered; Pro is a paid annual subscription according to official help. | Official site for Remember The Milk |
| Tasks.org | Open-source Android to-do lists, recurring reminders, and privacy-friendly sync. | Subscription, Free, Open Source +1 | Android | Core Android use is free; Tasks.org Cloud and some supporting features use subscriptions. | Official site for Tasks.org |
| Due | Fast, persistent personal reminders and reusable timers for Apple users. | Commercial, Paid | macOS, iOS, iPadOS | Due for iOS and macOS are sold separately; verify current App Store or Setapp pricing. | Official site for Due |
Options carrying a Free, Freemium, or Open Source label on this page include Todoist, TickTick, Microsoft To Do, Google Tasks, Apple Reminders. Free access, usage limits, commercial-use terms, and paid features can change, so confirm current details with each provider.
Best for: Cross-platform to-do lists, recurring tasks, reminders, and shared projects.
Todoist is a polished task manager for personal and team workflows, with projects, labels, filters, recurring due dates, reminders, shared projects, and apps across major desktop, mobile, browser, and wearable platforms. It is a stronger fit than Pi Reminder for users who want structured task management and collaboration rather than public or social reminders.
Pricing: Free plan available; Pro and Business are paid subscriptions. Verify current limits and prices on Todoist's pricing page.
Best for: All-in-one task list, calendar, reminders, habits, and focus planning.
TickTick combines to-do lists, reminders, calendar views, habits, and focus tools in one productivity app. It is useful for people who want recurring reminders and cross-device planning, but also want a built-in calendar and habit tracking without moving into a heavier project management system.
Pricing: Free plan and Premium upgrade are offered; verify current Premium pricing on the official upgrade page.
Best for: Simple task lists and reminders tied to Microsoft and Outlook workflows.
Microsoft To Do is a free task and reminder app that fits naturally with Microsoft accounts and Outlook tasks. It supports lists, due dates, reminders, repeating tasks, notes, file attachments, and cross-device sync. It is a practical Pi Reminder alternative for users who already live in Windows, Outlook, or Microsoft 365.
Pricing: Microsoft describes To Do as free; Microsoft account or organization policies may affect access.
Best for: Simple Google-connected to-dos, due dates, and task notifications.
Google Tasks is a lightweight task list for users who want simple reminders inside the Google ecosystem. It works with Gmail and Google Calendar, supports task details, subtasks, due dates, notifications, and sync across devices. It is less social than Pi Reminder, but easier for basic personal task capture.
Pricing: Available with Google accounts and Google Workspace; organization settings may affect availability.
Best for: Native Apple reminders, shared lists, Siri capture, and iCloud sync.
Apple Reminders is the built-in task and reminder app for Apple users. It supports time-based and location-based alerts, subtasks, attachments, Siri input, shared lists, task assignment in shared lists, and iCloud sync. It is a strong choice for iPhone, iPad, Mac, and iCloud users who do not need Pi Reminder's Android or Chrome workflow.
Pricing: Included with Apple devices and iCloud access; iCloud storage or account requirements may apply.
Best for: To-do lists, calendar planning, reminders, family boards, and team tasks.
Any.do is a to-do list, calendar, reminders, grocery list, family organizer, and team task app. It supports time-based, location-based, and recurring reminders, plus web, desktop, mobile, wearable, and browser extension access. It is a useful alternative when users want reminders with a more visual daily planner and family/team options.
Pricing: Free personal plan is advertised; Premium, Family, and Workspace plans add more features. Verify current plan limits.
Best for: Classic cross-platform to-do lists with smart lists, repeats, and reminders.
Remember The Milk is a long-running to-do list app with smart lists, priorities, tags, repeats, sharing, task assignment, and reminders through mobile notifications, email, text, IM, Twitter/X, and other channels. It is a good fit for users who want powerful list organization without a large project management interface.
Pricing: Free accounts are offered; Pro is a paid annual subscription according to official help.
Best for: Open-source Android to-do lists, recurring reminders, and privacy-friendly sync.
Tasks.org is an open-source, privacy-focused Android to-do and reminder app. It supports offline use, recurring tasks, notifications, location-based reminders, tags, filters, subtasks, and sync through services such as Google Tasks, CalDAV, DAVx⁵, EteSync, and DecSync CC. It is best for Android users who value data control.
Pricing: Core Android use is free; Tasks.org Cloud and some supporting features use subscriptions.
Best for: Fast, persistent personal reminders and reusable timers for Apple users.
Due is a focused reminder and timer app for iPhone, iPad, Apple Watch, and Mac. Its main appeal is speed and persistence: quick-access times, repeated auto-snooze notifications for overdue reminders, notification snooze actions, reusable timers, and sync via iCloud or Dropbox. It is narrower than Pi Reminder but strong for urgent personal reminders.
Pricing: Due for iOS and macOS are sold separately; verify current App Store or Setapp pricing.
The best option depends on your workflow, platform, budget, and required features. Options currently listed include Todoist, TickTick, Microsoft To Do.
Yes. Free, freemium, or open-source options in this list include Todoist, TickTick, Microsoft To Do, Google Tasks, Apple Reminders.
The alternatives in this list include options for Web, Windows, macOS, iOS, iPadOS, Android, Linux, depending on each product.
When reliable community signals are not available, the list should be read as a comparison set rather than a definitive ranking. Compare platform support, licensing, product details, and official provider information.
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