Comparison

Calendars vs Supernotes

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Calendars

This app combines a calendar, task manager, daily planner, and habit tracker. It helps users plan their day, build habits, boost productivity, and stay organized with seamless syncing across all Apple devices. Features include event creation, to-do list management, natural language input, and integration with popular meeting platforms.

Highlights
  • Calendar, task, and habit management
  • Daily, weekly, and monthly views
  • Natural language event creation
  • To-do list organization
  • Cross-device syncing
  • Meeting platform integration
Features
Read full description

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

About

Supernotes

Organize your thoughts and ideas with a fast, lightweight note-taking app. Create visually rich notecards with Markdown and LaTeX support, enhanced by AI writing assistance. Build interconnected knowledge networks and share them seamlessly.

Highlights
  • Shareable Markdown notecards
  • AI writing assistance
  • Bi-directional card linking
  • 2D/3D graph visualization
  • Spaced repetition flashcards
  • Real-time collaboration
  • Offline support
Features
Read full description

Free your thoughts with Supernotes, the fast, lightweight notes app. Write beautiful notecards that are perfect for personal, work, and educational use – all your ideas, meeting, and lecture notes at your fingertips. CREATE NOTECARDS THAT POP Tired of scrolling up and down long notes? Break down your ideas with Supernotes notecards – keeping you organized. Add colors, tasks, bold, italics, lists, equations, images, code snippets, and more. Want more? Connect a bluetooth keyboard, and harness the full extent of our Markdown and LaTeX editor. POWER UP WITH AI Try our thoughtful approach to AI. We call them Superpowers that help automate arduous tasks, such as tagging your cards, as well as train you to become a better writer, highlighting grammatical errors and offering rewording suggestions. ORGANIZE YOUR KNOWLEDGE Categorize your notecards using tags, reference popular cards with card links, and pop related notecards inside a parent card to build a network of interconnected knowledge. Multi-select, and edit notes in bulk, in the Table layout. Visualize your notes in both 2D and 3D graph layouts, helping you discover existing and new connections. Build your dream Zettelkasten system. REMEMBER WHERE YOU WROTE THEM Only on Supernotes, view all your notecards on a geographic Map. Opt-in to location sharing to automatically assign locations to notes when you create them to see where you had the most inspiring ideas or the most meetings! Or manually assign locations for trips, restaurant recommendations and more. BUILT-IN SPACED REPETITION Jump into Flashcard layout to instantly learn any of your notecards. Using our FSRS algorithm, cram your notes before an exam or learn them at a relaxed pace. We will show which notecards are due at the right times so you can learn as efficiently as possible. SHARE WITH FRIENDS Stop taking screenshots of notes – just share a notecard to generate a secure link. That note will be instantly accessible to anyone (even if they don't have Supernotes)! Add friends, classmates, or teammates on Supernotes to instantly share new notecards with each other, and see each other's cursors editing in real time. ON ALL YOUR DEVICES, OFFLINE OR ONLINE Pick up where you left off with our iPhone, iPad, and Mac apps. Keep taking notes wherever you are, even if your connection drops, with seamless offline support. FEATURE COMPLETE - Universal Search & Filters - Markdown / LaTeX Editor - Bi-directional Card Links - Calendar Heatmap - Assign Dates to Notes - Four Day & Night Themes - Share to Supernotes Extension - Export to Markdown, JSON & PNG - Keyboard Shortcuts - 24/7 Customer Support FREE FOR LIGHTWEIGHT USE Discover everything Supernotes has to offer with our generous free Starter plan; explore all the features and earn 100s cards. Or upgrade to the Unlimited plan for unlimited cards, feature previews, and more. Prices may differ depending on your location, and subscriptions will be charged to your App Store payment method. Your subscription will automatically renew and you may cancel at any time. Privacy Policy: https://supernotes.app/privacy Terms & Conditions: https://supernotes.app/terms

Screenshots

Calendars4 screens
Supernotes4 screens

Verdict

The call

Calendars and Supernotes both sit at 4.7 stars, but that hides the real split: 91% of Supernotes's written reviews are positive against 55% of Calendars's. Supernotes also leads on iOS requirement (15.0 vs 18.2). Calendars's advantage is ratings volume (122K vs 122) and update cadence (every 11 days vs monthly). On price, rating, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Calendars sells 17 in-app purchases, starting at $3.99 per month and Supernotes sells 3 in-app purchases, starting at $11.00 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.7 for Calendars against 4.8 for Supernotes. That said, the two scores are not equally well evidenced: Calendars has 122K ratings behind it against 122, so its average is the more settled of the two. Written reviews are what separate them: 55% of Calendars's written reviews are positive against 91% of Supernotes's.

UpkeepUpdate frequency

Calendars ships an update every 11 days, Supernotes monthly. The most recent releases landed on September 24, 2026 and September 16, 2026 respectively.

Scorecard5 real differences · 6 level
Calendars versus Supernotes: the parameters behind the verdict, then further details
ParameterCalendarsSupernotes
PriceFreeFree
Rating4.7 (122K ratings)4.8 (122 ratings) — better
Positive reviews55.4% of reviews90.6% of reviews — better
Number of ratings122K — better122
Update frequencyEvery 11 days — betterMonthly
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
Best chart rank#103 — better
DevicesiPhone, iPad, Mac, Apple Watch — betteriPhone, iPad, iPod
Requires iOS18.215.0 — better
Further details — not scored
Size407 MB106 MB
Age rating4+4+
DeveloperReaddle Technologies LimitedSupernotes

Customer experience

Calendars

All ratings121,639 ratings
Positive93.8%
Neutral3.1%
Negative3.1%
Written reviews1,247 reviews
Positive55.4%
Neutral8.9%
Negative35.7%

Supernotes

All ratings122 ratings
Positive95.9%
Neutral0.8%
Negative3.3%
Written reviews53 reviews
Positive90.6%
Neutral1.9%
Negative7.5%

User reviews

Calendars

From 122K App Store ratings

What we love

  • 🌟 Excellent calendar app
  • 👍 Easy to use and organize
  • 🎨 Helpful color-coding
  • 📆 Seamless integration with other calendars
  • 🗓️ Detailed monthly/weekly views

Room to improve

  • 🐛 Occasional glitches and data loss
  • 💰 Concerns over subscription model
  • 🕰️ Cumbersome date/time selection process
  • 🔍 Limited location search functionality
  • 🔄 Sync issues between devices

Supernotes

From 122 App Store ratings

What we love

  • ✨ Beautiful design and UI
  • 🚀 Fast and efficient
  • 👍 Easy to use and intuitive
  • 🧠 Powerful organization system
  • 💡 Unique card-based concept

Room to improve

  • 🤔 Learning curve for some
  • ⚠️ Limited initial note space
  • 🎛️ Lacks advanced features for some users
  • 📱 No iOS widgets
  • 🔄 Cumbersome tagging for some

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

Supernotes

Reported bugs

2 issues
  • Blank white screen on app/web browser
  • App doesn't work on iOS 15.4.1

Requested features

6 requests
  • iOS widgets for home and lock screens
  • Alert for note space limit and prompt to edit/continue as journal entry
  • Better image and video viewing
  • Control center button
  • Split screen functionality
Show 1 more
  • Ability to create groups or collections of notes

In-app purchases

17 purchases

Calendars

Subscriptions8
  • 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 5 more
  • Calendars PRO 1 Year7 Days trial2 variants$19.991 Year
  • Calendars PRO 1 Year1 Year trial$19.991 Year
  • Calendars PRO 1 Year14 Days trial$19.991 Year
  • Calendars PRO 1 Year7 Days trial$21.991 Year
  • Calendars PRO 1 Year7 Days trial$29.991 Year
One-time9
  • Calendars PRO LifetimeFree
  • Invites & Attendees Upgrade$1.99
  • Smart Input Upgrade$1.99
Show 6 more
  • Full Upgrade$4.99
  • Interesting Calendars$5.99
  • My schedule planner, Organizer$6.99
  • Full Pack$12.99
  • Reminders & Calendars$19.99
  • Recurring Events$31.99
3 purchases

Supernotes

Subscriptions3
  • Supernotes Unlimited (1 Month)$11.001 Month
  • Supernotes Unlimited (Promo)7 Days trial$69.001 Year
  • Supernotes Unlimited (1 Year)$99.001 Year

Questions

Is Calendars free?
Calendars is free to download, with in-app purchases available.
Is Supernotes free?
Supernotes is free to download, with in-app purchases available.
Which has better reviews, Calendars or Supernotes?
Supernotes is rated higher. Calendars averages 4.7 out of 5 from 122K ratings, while Supernotes averages 4.8 from 122 ratings.
Do Calendars or Supernotes have ads?
Neither Calendars nor Supernotes shows ads.
Which is updated more often, Calendars or Supernotes?
Calendars ships an update every 11 days, and Supernotes monthly. Most recently, Calendars was updated on September 24, 2026 and Supernotes on September 16, 2026.

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