Simple Calendar (Plan Todo) vs Tertiary Planner
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
Simple Calendar (Plan Todo)
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The future of task management with our innovative app designed to simplify your daily life. Our application offers a comprehensive solution for individuals seeking a streamlined approach to task management. Whether you're a busy professional, a student juggling assignments, or simply someone trying to stay on top of daily chores, our app is your go-to companion. Key Features: 1. Add New Task: Gone are the days of fumbling through various screens to add a new task. With our app, adding a task is a breeze. Simply tap, type, and you're ready to roll. The intuitive design ensures that you spend less time inputting data and more time getting things done. 2. Mark Task Completed or Starred: Effortlessly track your progress by marking tasks as completed. For those priority tasks, use the star feature to highlight and easily locate them later. This visual cue system ensures that you can focus on what matters most at any given time. 3. Notification Reminders: Our app goes beyond the basic task list by actively reminding you of impending deadlines, putting you in control of your schedule. 4. Create Tags: Organize your tasks with the power of tags. Create customized tags for work, personal, or any category that suits your lifestyle. This feature enhances task management by allowing you to filter and sort tasks with ease, providing a holistic view of your to-do list. 5. Easy Task Management with Tags: Take control of your tasks like never before with our tag management system. Group similar tasks together, making it simple to tackle related activities in one go. Easily switch between different tags to focus on specific aspects of your life, whether it's work-related, personal, or a mix of both. 6. Offline Accessibility: Our app understands that life doesn't always come with a constant internet connection. Enjoy the freedom to access and manage your tasks offline, ensuring you stay productive anytime, anywhere. 7. Localized Data Storage: We prioritize your privacy by storing your data only on your local device. Your information is not shared or stored on any cloud or external server, providing you with the assurance that your sensitive data remains in your control. In a world where time is of the essence, our task management app stands out as an indispensable tool for anyone seeking efficiency and productivity. The clean and intuitive interface ensures that you spend less time navigating through features and more time accomplishing your goals. Our commitment to user satisfaction is reflected in the regular updates and improvements we make to enhance the app's functionality. We believe in providing a seamless and enjoyable experience, and your feedback is invaluable in shaping the future of our app.
Tertiary Planner
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Tertiary Planner is a fast, private to-do and planner app for iPhone, iPad and Mac. Type or speak what you need ā "Lunch with Sam tomorrow at 1pm" ā and the on-device assistant words it nicely and saves it as an appointment or a to-do, straight into your list. On supported devices it uses Apple Intelligence, running entirely ON DEVICE, to understand your intent and word your items clearly. On other devices the same on-device parsing (Apple's Natural Language and Speech frameworks) does the job. Either way, nothing you type or say ever leaves your device to any third party. FEATURES ⢠One Planner page with To-Do and Appointment tabs, each filterable by your lists ⢠Capture bar at the bottom ā type or dictate, and the assistant drafts and saves the entry; Undo reverts it ⢠Apple Intelligence on-device intent understanding (with an on-device fallback) ⢠Voice capture using native iOS speech recognition ⢠Your own lists and sub-lists ā create, rename, pin, reorder and nest them ⢠Assign items to people; items added in someone's list go to that person ⢠To-Do priorities ā Critical, High, Medium or Low; Critical and High are pinned automatically ⢠Pin anything to the top; drag to rearrange everything by hand ⢠Smart views: All Tasks, Pinned, Today and Upcoming show your own queue ⢠Upcoming ā everything with a date, broken down by day, with anything overdue on top ⢠Calendar ā a month view with each day's appointments written into the day, plus a List view ⢠Meeting links ā paste a Google Meet, Zoom or Teams link and tap Join on the appointment ⢠Singapore public holidays marked on the calendar ⢠Today's appointments ā a morning summary and an alert just before each appointment starts ⢠Advance reminders ā a notification before anything with a date is due (1, 3 or 7 days ahead) ⢠Optional mirror of appointments into your system Calendar (EventKit only) ⢠Search across titles, notes, assignee and list names ⢠Duplicate check ā spots the same title on the same day and offers to archive the extras ⢠Check off an item and it is automatically archived; restore anytime ⢠iCloud sync ā your items stay up to date on every device signed in to your iCloud ⢠Light, Dark or System appearance, with a choice of accent colours PRIVACY Your data belongs to you. All intelligence runs on your device. Items are stored on your device and synced only through your personal, private iCloud database, which only you can access ā we never see your data. No third-party AI services, no accounts, no tracking. Developed by Tertiary Infotech Academy Pte Ltd.
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Verdict
The clearest difference is in-app purchases: Tertiary Planner at none against Simple Calendar (Plan Todo)'s 1. Tertiary Planner also leads on ads (none vs shown) and update cadence (every 2 days vs every 6 weeks). Simple Calendar (Plan Todo)'s advantage is iOS requirement (15.6 vs 17.0). On price and device support there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Both are free to download. Simple Calendar (Plan Todo) sells 1 one-off in-app purchase. Tertiary Planner asks for nothing beyond the download.
Simple Calendar (Plan Todo) ships an update every 6 weeks, Tertiary Planner every 2 days. Both last shipped on October 17, 2026.
| Parameter | Simple Calendar (Plan Todo) | Tertiary Planner |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 6 weeks | Every 2 days ā better |
| Ads | Yes | No ā better |
| In-app purchases | Yes | No ā better |
| Devices | iPhone, iPad, iPod ā better | iPhone, iPad |
| Requires iOS | 15.6 ā better | 17.0 |
| Further details ā not scored | ||
| Size | 75 MB | 2 MB |
| Age rating | 12+ | 4+ |
| Developer | Huy Huynh | Alfred Ang |
In-app purchases
Simple Calendar (Plan Todo)
- Remove Ads$5.99
Tertiary Planner
No in-app purchases
Questions
Is Simple Calendar (Plan Todo) free?
Is Tertiary Planner free?
Do Simple Calendar (Plan Todo) or Tertiary Planner have ads?
Which is updated more often, Simple Calendar (Plan Todo) or Tertiary Planner?
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