Calendars vs Penguin Planner
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calendars
This app combines calendar, task management, and habit tracking to boost productivity and organization. It offers seamless syncing across Apple devices and integrates with popular services like Google Calendar. Plan your day, manage tasks, and build routines with customizable views and features.
- Calendar and task management
- Habit tracking and routine building
- Cross-device syncing
- Natural language event creation
- Integration with Google Calendar and Zoom
- Customizable views and widgets
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Calendars by Readdle is the all-in-one calendar, task manager, daily planner, and habit tracker — seamlessly working across all your Apple devices: Mac, iPhone, iPad, and Apple Watch. Plan your day, build better habits, boost productivity, and stay organized with powerful features and smooth sync between all your devices. What you can do with Calendars: • View and manage your calendar with daily, weekly, and monthly views • Create events, set reminders, and never miss important dates • Use the built-in agenda planner to focus on what matters most • Organize your to-do list and manage your tasks with ease • Quickly add events or to-do items using natural language • Build routines and track your habits to stay consistent • Take a guided productivity course to improve time management and focus • Sync across devices with Google Calendar, iCloud, and more • Customize your planner calendar with color coding and widgets • Join Zoom, Google Meet, or GoToMeeting directly from your calendar • Stay in control of your time, wherever you are Whether you're planning a busy workday, building new habits, or working on personal growth, Calendars brings everything together to help you own your time — across all your Apple devices. Privacy Policy: https://readdle.com/calendars/legal/privacy Terms of Service: https://readdle.com/calendars/legal/terms Have questions, comments, or issues? Don’t hesitate to reach out to us at http://readdle.com/contact
Penguin Planner
Visually plan your day by drawing tasks directly onto a continuous timeline. Effortlessly adjust task durations, move groups of activities, and copy routines. This app offers a clear, actionable view of your schedule, helping you take control of your time.
- Continuous timeline planning
- Draw tasks directly on timeline
- Move and resize tasks easily
- Copy/paste tasks and groups
- Flexible repeating tasks
- Reminders and alerts
- Marine and Light themes
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Plan your day by drawing tasks directly onto a continuous timeline. See your schedule take shape as you plan. Stretch tasks to match the time they really need, move whole groups when plans shift, and copy routines exactly where you point. Instead of juggling a to-do list and a calendar, build a schedule you can actually see. FEATURES • Continuous timeline that flows naturally across days • Draw tasks directly on the timeline • Move multiple tasks together in a single action • Copy and paste individual tasks or entire groups • Resize tasks visually with minute-level precision • Flexible repeating tasks • Reminders and special alerts • Marine and Light timeline themes • Built-in Penguin Academy lessons Whether you're organizing your daily routine, planning projects, or using time blocking to stay focused, Penguin Planner helps you see your schedule clearly and stay in control of what matters most. Because planning isn't about chasing your schedule. It's about taking control of your time. A new way to plan. Terms of Use: https://penguinplanner.com/terms Privacy Policy: https://penguinplanner.com/privacy
Screenshots
Verdict
The clearest difference is review sentiment: Penguin Planner at 100% against Calendars's 56%. Penguin Planner also leads on rating (5.0 vs 4.7) and iOS requirement (15.6 vs 18.2). Calendars's advantage is ratings volume (123K vs 1) and chart position (#138 vs unranked). On price, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Calendars sells 10 in-app purchases, starting at $3.99 per month and Penguin Planner sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
Penguin Planner holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Calendars has 123K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 56% of Calendars's written reviews are positive against 100% of Penguin Planner's.
Calendars ships an update weekly, Penguin Planner fortnightly. The most recent releases landed on November 8, 2026 and October 30, 2026 respectively.
| Parameter | Calendars | Penguin Planner |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (123K ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 56.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 123K — better | 1 |
| Update frequency | Weekly — better | Fortnightly |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Freemium |
| Best chart rank | #138 — better | — |
| Devices | iPhone, iPad, Mac, Apple Watch — better | iPhone, iPod |
| Requires iOS | 18.2 | 15.6 — better |
| Further details — not scored | ||
| Size | 413 MB | 143 MB |
| Age rating | 4+ | 4+ |
| Developer | Readdle Technologies Limited | Charles Torosian |
Customer experience
Calendars
Penguin Planner
Bugs and requests
Calendars
Reported bugs
3 issues- Disappearing events and appointments
- Upgrade process causing data loss
- Freezing and crashing on certain devices
Requested features
5 requests- Recurring events for free users
- Customizable widgets and app icons
- Ability to archive/restore past events
- Improved Apple Watch integration
- Shared calendars and family management
Penguin Planner
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Calendars
- Calendars PRO 1 Month$3.991 Month
- Calendars by Readdle: Interesting Calendars1 Month trial$3.991 Year
- Calendars PRO 1 Month7 Days trial$3.991 Month
Show 3 moreShow fewer
- Calendars PRO 1 Year7 Days trial$19.991 Year
- Calendars PRO 1 Year1 Year trial$19.991 Year
- Calendars PRO 1 Year7 Days trial$21.991 Year
- Smart Input Upgrade$1.99
- My schedule planner, Organizer$6.99
- Full Pack$12.99
Show 1 moreShow fewer
- Recurring Events$31.99
Penguin Planner
- Penguin Planner Pro Monthly1 Month trial$2.991 Month
- Penguin Planner Pro Yearly7 Days trial$24.991 Year
Questions
Is Calendars free?
Is Penguin Planner free?
Which has better reviews, Calendars or Penguin Planner?
Do Calendars or Penguin Planner have ads?
Which is updated more often, Calendars or Penguin Planner?
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