Comparison

Calendars vs Singularity To Do List, Tasks

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

Singularity To Do List, Tasks

Manage your tasks, projects, and daily schedule with this all-in-one productivity app. It combines a to-do list, calendar, planner, notepad, habit tracker, and Pomodoro timer to help you organize your life and stay focused.

Highlights
  • Task and note creation with voice input
  • File and image attachments to tasks
  • Smart reminders with natural date recognition
  • Automated recurring task scheduling
  • Calendar and daily planning views
  • Project, tag, and checklist organization
  • Pomodoro timer and stopwatch
  • Habit tracker for routine building
Features
Read full description

SingularityApp brings together everything you need to manage your tasks, projects, and daily schedule. A to-do list and calendar, daily planner and notepad, habit tracker, checklist, reminders, and Pomodoro timer — all in one free productivity app. Take control of the chaos and plan your day with confidence. ADD TASKS AND NOTES WITH EASE Voice input, home screen widgets, and a clean interface make capturing tasks effortless. Create tasks via email to get ideas out of your head and into your to-do list instantly. KEEP NOTES WITH PHOTOS AND DOCUMENTS Attach files, images, and documents to your tasks and notes. Use the built-in notepad for journaling, meeting notes, or saving important details — SingularityApp is a planner and a notes app in one. SET SMART REMINDERS Natural date recognition helps you set reminders in seconds, even from voice input. Add up to five reminders per task. Turn on alarm mode for high-priority tasks so nothing slips through the cracks. AUTOMATE RECURRING TASKS Flexible repeat settings let you schedule recurring tasks for daily routines, birthdays, workouts, study sessions, or work deadlines. Offload the mental load and let the app handle your schedule. PLAN YOUR DAY WITH CALENDAR AND DAILY PLANS Two powerful planning views: a Calendar to see your schedule by day, week, or month in a grid layout, and a Daily Plans view to browse your task list for any date. ORGANIZE WITH PROJECTS, TAGS, AND CHECKLISTS Build your task list the way you think. Nest projects and tasks with unlimited depth. Add color-coded tags and filter your to-do list by them. Use checklists for shopping lists, packing lists, or step-by-step workflows. STAY FOCUSED WITH POMODORO TIMER AND STOPWATCH Use the built-in Pomodoro timer to work in focused intervals and boost productivity. Switch to the stopwatch to track time without breaks. Attach the timer to any task and monitor time spent. BUILD HABITS AND REACH YOUR GOALS The habit tracker helps you form healthy routines and drop bad ones. Drink water, learn a language, exercise, meditate — add habits to your list and check them off daily. Set daily goals, track your streaks, and stay motivated. SHARE LISTS AND COLLABORATE Run family projects, shared to-do lists, or team tasks together. Share any list by link — even with people who don't use SingularityApp. Assign tasks and stay in sync. PERSONALIZE WITH THEMES AND COLORS Choose from beautiful themes and color options to make planning enjoyable. Add emoji to your projects for a personal touch. Color-code your calendar for quick visual navigation. SYNC ACROSS ALL YOUR DEVICES Install SingularityApp on every device so your tasks, notes, and to-do lists are always at hand. Use the desktop version for advanced features like Focus Mode and Project Check Mode. The Apple Watch app delivers reminders and lets you add tasks from your wrist. Most features are free. Upgrade to SingularityApp Pro or Elite for the most powerful productivity tools — task management, daily planner, calendar, goal tracking, and more, all in one place. Terms of use: https://singularity-app.com/terms_of_service/ Privacy Policy: https://singularity-app.com/policy/ Website: https://singularity-app.com Blog: https://singularity-app.com/blog/ Support: https://helpdesk.singularity-app.com/

Screenshots

Calendars4 screens
Singularity To Do List, Tasks4 screens

Verdict

The call

Calendars and Singularity To Do List, Tasks both sit at 4.7 stars, but that hides the real split: 85% of Singularity To Do List, Tasks's written reviews are positive against 55% of Calendars's. Singularity To Do List, Tasks also leads on iOS requirement (15.6 vs 18.2). Calendars's advantage is ratings volume (122K vs 73) and chart position (#103 vs unranked). On price, rating, update cadence and ads 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 18 in-app purchases, starting at $3.99 per month and Singularity To Do List, Tasks sells 5 in-app purchases, starting at $3.99 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 Singularity To Do List, Tasks. That said, the two scores are not equally well evidenced: Calendars has 122K ratings behind it against 73, 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 85% of Singularity To Do List, Tasks's.

UpkeepUpdate frequency

Calendars ships an update every 11 days, Singularity To Do List, Tasks weekly. The most recent releases landed on September 25, 2026 and September 21, 2026 respectively.

Scorecard4 real differences · 7 level
Calendars versus Singularity To Do List, Tasks: the parameters behind the verdict, then further details
ParameterCalendarsSingularity To Do List, Tasks
PriceFreeFree
Rating4.7 (122K ratings)4.8 (73 ratings) — better
Positive reviews55.4% of reviews85.3% of reviews — better
Number of ratings122K — better73
Update frequencyEvery 11 daysWeekly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
Best chart rank#103 — better—
DevicesiPhone, iPad, Mac, Apple WatchiPhone, iPad, iPod, Apple Watch
Requires iOS18.215.6 — better
Further details — not scored
Size407 MB210 MB
Age rating4+4+
DeveloperReaddle Technologies LimitedSINGULARITYAPP LLP

Customer experience

Calendars

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

Singularity To Do List, Tasks

All ratings73 ratings
Positive94.5%
Neutral0.0%
Negative5.5%
Written reviews102 reviews
Positive85.3%
Neutral1.0%
Negative13.7%

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

Singularity To Do List, Tasks

Not enough reviews yet to summarise bugs or requests.

In-app purchases

18 purchases

Calendars

Subscriptions9
  • 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 6 more
  • Calendars PRO 1 Year3 Months trial$19.991 Year
  • 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
5 purchases

Singularity To Do List, Tasks

Subscriptions4
  • SingularityApp Premium Month$3.991 Month
  • SingularityApp Elite Month$4.991 Month
  • SingularityApp Premium Year$39.991 Year
Show 1 more
  • SingularityApp Elite Year$49.991 Year
One-time1
  • Pro forever!$89.99

Questions

Is Calendars free?
Calendars is free to download, with in-app purchases available.
Is Singularity To Do List, Tasks free?
Singularity To Do List, Tasks is free to download, with in-app purchases available.
Which has better reviews, Calendars or Singularity To Do List, Tasks?
Singularity To Do List, Tasks is rated higher. Calendars averages 4.7 out of 5 from 122K ratings, while Singularity To Do List, Tasks averages 4.8 from 73 ratings.
Do Calendars or Singularity To Do List, Tasks have ads?
Neither Calendars nor Singularity To Do List, Tasks shows ads.
Which is updated more often, Calendars or Singularity To Do List, Tasks?
Calendars ships an update every 11 days, and Singularity To Do List, Tasks weekly. Most recently, Calendars was updated on September 25, 2026 and Singularity To Do List, Tasks on September 21, 2026.

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