Comparison

Simple Calendar vs Space Notes

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

Head to head
About

Simple Calendar

Organize your tasks and schedule with a clean, minimalist interface. Plan your day using time blocks, set reminders for important events, and manage tasks in an intuitive inbox. Track your progress with daily and weekly statistics.

Highlights
  • Time blocking for daily planning
  • Specific time reminders and notifications
  • Intuitive inbox for unscheduled tasks
  • Calendar view with daily/weekly statistics
  • Customizable categories and priorities
  • Dark mode support
  • Repeating tasks
Features
Read full description

Get organized and stay on top of your tasks with Quarterplan - the ultimate minimal task management app. With a clean and minimal design, you can focus on what's important and get things done. Plan your day with ease using our unique time block feature Never forget important tasks and events with specific time reminders and notifications Stay on top of your GTD or custom workflow with our intuitive inbox feature Keep track of your progress with our calendar view and daily/weekly statistics Customize your experience with dark mode, categories, and priorities And the best part? Most features are available for free, with the option to upgrade for additional benefits such as unlimited categories and notifications. Time Blocks Quickly plan your day in 3 hour time blocks and easily check your progress throughout the day in the calendar view. Specific Time with Notification Specify a specific time and set a reminder to make sure that you don’t forget important events and tasks. Inbox Or for any tasks that doesn't have a specific time or date, or if you are following GTD or your own custom workflow then simply add tasks to your inbox. Try It - It’s Free Most of the features are available for free (calendar, inbox, checklists, notes, repeating tasks, daily and weekly statistics, dark mode, up to 5 categories and priorities), and if your require more then a subscription will give you unlimited categories and priorities, notifications, monthly statistics and cloud storage. -- FEATURES -- - CALENDAR A calendar for scheduling tasks and appointments - INBOX An inbox for ideas, lists, projects and any tasks that doesn’t have a fixed date - CHECKLISTS For when you need to break down your task into smaller actions - DARK MODE For evenings or when you want to surrender to the dark side - REPEATING TASKS Create tasks that repeat every day, week, month or year - CATEGORIES & PRIORITIES Create up to 5 custom categories and priorities to define your own workflow - STATISTICS Daily and weekly statistics gives you a clear overview of your activity -- PRO FEATURES -- - NOTIFICATIONS Reminders make sure you don’t miss anything important - CATEGORIES & PRIORITIES Create unlimited custom categories and priorities to define your own workflow - STATISTICS Monthly statistics gives you a clear overview of your activity -- Membership -- - Payment will be charged to iTunes Account at confirmation of purchase - Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period - Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal - Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase - Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable Privacy policy: https://www.quarterplan.com/privacy_policy.html Terms of use: https://www.quarterplan.com/terms_conditions.html -- MAKE IT YOURS -- Quarterplan is flexible so that you can use your own work flow and methodologies. Create your own categories and priorities so that the Inbox works for you, whether you use GTD, The Action Method, 20/80 or your own custom setup. Please feel free to contact us if you have any feedback or questions: human@raemedy.com

About

Space Notes

This app allows users to create detailed lists with expandable items, offering dedicated note-taking for each entry. It provides various list types, progress tracking, and organizational tools to manage complex information.

Highlights
  • Expandable checklist items into detailed notes
  • Multiple note types (shopping, recipe, goals)
  • Progress bars for goal tracking
  • Random item selection from lists
  • Checklist table view for quick editing
  • User-defined category tags
  • Note priorities (low, medium, high, urgent)
Features
Read full description

Space Notes was built for people who like to make lists. Shopping lists, to-do lists, recipe lists, lists of modules for the apps you're building, or cards you're collecting. But sometimes just having a list isn't good enough. You know that your recipe needs a particular type of cheese, but there's only store in town that sells it. Space Notes gives you an entire notepad for every item in your checklist, allowing you to provide as much, or as little detail as you need for every single item. Expand your notes from a galaxy to a whole universe of ideas! New in Space Notes 3.0: - Note Bundles: Keep notes organized with Note Bundles. You can create a bundle and add your notes to it so that you can quickly locate related entries. - Card Collector's Gallery: A gallery where you can store images of your favorite trading or collector's cards. - Handwriting with OCR: Use handwriting to enter text into your notes with Optical Character Recognition (OCR). Features: - Note types with exclusive functionality for creating goals with progress bars, comparing notes, making shopping lists. - Expand checklist items into notes for taking as much detail as you need, without crowding your screen. - Randomly select an item from your lists, for those times when you can't decide on something, like where to go for lunch! - Checklist table view: You can now switch to a table view for your checklists, allowing you to quickly edit your checklist items. - Convert to checklist: you can now type out rows of text in the main notepad, then convert them to items in your checklist. - Consolidated to-do list: all your due dates in one central location for quick reference and navigation. - User-defined category tags: create tags to categorize your notes any way you'd like. - Note priorities: assign priority levels for low, medium, high, and urgent. - Three new note types: shopping, recipe, and character cards. - Checklist item due dates: prior to version 2.0, due dates could only be assigned to primary notes. Now they can be assigned to checklist items for 'Goal' notes. - Custom color schemes: add a personal touch to your Space Notes experience by creating your own color schemes. - In-app calendar: access a calendar right within your notes so that you don't have to keep switching between apps when you're making to-do lists. - Due date quick add: when viewing a 'goal' note with the in-app calendar, you can tap on a date in the calendar, then tap the calendar button on a checklist item to instantly create a due date. Space Notes Pro features: - Compare checklists: see two checklists, side by side. Space Notes will automatically highlight if the same item appears in both checklists. - Historical timeline: if you're working on a project, or tracking responsibilities at your job, you can commit your completed tasks to a historical timeline, which removes them from your note lists, but keeps them in a timeline that you can access when it's time to write your resume or review. - Calculator: an in-app calculator so that you don't have to switch to a separate calculator app when you need to do basic arithmetic. Once you've arrived at the result, simply tap on it to insert it into your note. The next version of Space Notes is being completely rebuilt, from the ground up. This will provide greater performance and stability, while also reducing the app's footprint.

Screenshots

Simple Calendar4 screens
Space Notes4 screens

Verdict

The call

The clearest difference is monetization model: Space Notes at free against Simple Calendar's freemium. Space Notes also leads on update cadence (every 9 days vs every 4 weeks). Simple Calendar's advantage is ratings volume (9 vs 3) and iOS requirement (13.4 vs 17.6). 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. Simple Calendar sells 2 in-app purchases, starting at $1.99 per month and Space Notes sells 1 one-off in-app purchase. 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 — 3.6 for Simple Calendar against 3.7 for Space Notes. Both are backed by a comparable volume of ratings — 9 and 3 respectively.

UpkeepUpdate frequency

Simple Calendar ships an update every 4 weeks, Space Notes every 9 days. The most recent releases landed on October 2, 2026 and October 7, 2026 respectively.

Scorecard4 real differences · 6 level
Simple Calendar versus Space Notes: the parameters behind the verdict, then further details
ParameterSimple CalendarSpace Notes
PriceFreeFree
Rating3.6 (9 ratings)3.7 (3 ratings) — better
Positive reviews40.0% of reviews—
Number of ratings9 — better3
Update frequencyEvery 4 weeksEvery 9 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFree — better
DevicesiPhone, iPodiPhone, iPad, Mac — better
Requires iOS13.4 — better17.6
Further details — not scored
Size41 MB8 MB
Age rating4+4+
DeveloperRaemedy LimitedSpace Japan Studios

Customer experience

Simple Calendar

All ratings9 ratings
Positive55.6%
Neutral11.1%
Negative33.3%
Written reviews5 reviews
Positive40.0%
Neutral20.0%
Negative40.0%

Space Notes

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%

In-app purchases

2 purchases

Simple Calendar

Subscriptions2
  • Quarterplan Pro Monthly$1.991 Month
  • Quarterplan Pro Yearly$11.991 Year
1 purchases

Space Notes

One-time1
  • SpaceNotes Pro$0.99

Questions

Is Simple Calendar free?
Simple Calendar is free to download, with in-app purchases available.
Is Space Notes free?
Space Notes is free to download, with in-app purchases available.
Which has better reviews, Simple Calendar or Space Notes?
Space Notes is rated higher. Simple Calendar averages 3.6 out of 5 from 9 ratings, while Space Notes averages 3.7 from 3 ratings.
Do Simple Calendar or Space Notes have ads?
Neither Simple Calendar nor Space Notes shows ads.
Which is updated more often, Simple Calendar or Space Notes?
Simple Calendar ships an update every 4 weeks, and Space Notes every 9 days. Most recently, Simple Calendar was updated on October 2, 2026 and Space Notes on October 7, 2026.

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