Comparison

Calendars vs Simple Working Calendar

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

Simple Working Calendar

Easily calculate and manage your work schedule with a user-friendly design. Add custom schedules, track holidays, and plan vacations. Download now while it's free!

Highlights
  • Work schedule calculation
  • Custom schedule creation
  • Holiday tracking
  • Vacation planning
  • Intuitive design
Features
Read full description

Simple Work Calendar — your shift schedule in two taps. Pick a cycle, mark your first working day — the calendar computes all shifts and days off years ahead. ANY SCHEDULE • Ready cycles: 2/2, 3/3, 1 on / 3 off • Custom patterns: any mix of working and off days — 5/2, 4/2, 6/1, 15/15 rotations • Anchor the rotation to any start date — today, tomorrow or a day in the past NIGHT SHIFTS • Mark which shifts in the cycle are nights — shown in dark • Tap any day to switch: day → night → off • Manual edits never break the pattern COUNTERS • Working and off days per month or year, counted automatically • Red dot marks today — always know where you are in the cycle WHO IT'S FOR Nurses, doctors, factory workers, security guards, drivers, retail staff, first responders — everyone who works shifts, not weekdays. RELIABLE • Your schedule is stored on the device and never disappears • Works offline, no sign-up • Setup takes under a minute

Screenshots

Calendars4 screens
Simple Working Calendar3 screens

Verdict

The call

The clearest difference is ads: Calendars at none against Simple Working Calendar's shown. Calendars also leads on update cadence (every 11 days vs every 3 months) and ratings volume (122K vs 168). Simple Working Calendar's advantage is rating (4.9 vs 4.7) and iOS requirement (15.0 vs 18.2). On price, review sentiment, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Calendars sells 17 in-app purchases, starting at $3.99 per month and Simple Working Calendar 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

Simple Working Calendar holds the better App Store score, 4.9 against 4.7. That said, the two scores are not equally well evidenced: Calendars has 122K ratings behind it against 168, so its average is the more settled of the two. Written reviews point the same way: 55% of Calendars's written reviews are positive against 62% of Simple Working Calendar's.

UpkeepUpdate frequency

Calendars ships an update every 11 days, Simple Working Calendar every 3 months. The most recent releases landed on September 24, 2026 and September 22, 2026 respectively.

Scorecard6 real differences · 5 level
Calendars versus Simple Working Calendar: the parameters behind the verdict, then further details
ParameterCalendarsSimple Working Calendar
PriceFreeFree
Rating4.7 (122K ratings)4.9 (168 ratings) — better
Positive reviews55.4% of reviews61.9% of reviews — better
Number of ratings122K — better168
Update frequencyEvery 11 days — betterEvery 3 months
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
Best chart rank#104 — better—
DevicesiPhone, iPad, Mac, Apple Watch — betteriPhone, iPad, iPod
Requires iOS18.215.0 — better
Further details — not scored
Size407 MB179 MB
Age rating4+12+
DeveloperReaddle Technologies LimitedНико Беллик

Customer experience

Calendars

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

Simple Working Calendar

All ratings168 ratings
Positive96.4%
Neutral1.2%
Negative2.4%
Written reviews42 reviews
Positive61.9%
Neutral7.1%
Negative31.0%

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

Simple Working Calendar

Not enough reviews yet to summarise bugs or requests.

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
1 purchases

Simple Working Calendar

One-time1
  • Remove Ads$0.99

Questions

Is Calendars free?
Calendars is free to download, with in-app purchases available.
Is Simple Working Calendar free?
Simple Working Calendar is free to download, with in-app purchases available.
Which has better reviews, Calendars or Simple Working Calendar?
Simple Working Calendar is rated higher. Calendars averages 4.7 out of 5 from 122K ratings, while Simple Working Calendar averages 4.9 from 168 ratings.
Do Calendars or Simple Working Calendar have ads?
Simple Working Calendar shows ads; Calendars does not.
Which is updated more often, Calendars or Simple Working Calendar?
Calendars ships an update every 11 days, and Simple Working Calendar every 3 months. Most recently, Calendars was updated on September 24, 2026 and Simple Working Calendar on September 22, 2026.

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