# Calendars vs ShiftWork

The clearest difference is ads: Calendars at none against ShiftWork's shown. Calendars also leads on update cadence (every 11 days vs every 3 months) and ratings volume (122K vs 56). ShiftWork's advantage is iOS requirement (14.0 vs 18.2). On price, rating, review sentiment and in-app purchases there is nothing between them.

Both are free to download. Calendars sells 18 in-app purchases, starting at $3.99 per month and ShiftWork sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.7 for Calendars against 4.8 for ShiftWork. That said, the two scores are not equally well evidenced: Calendars has 122K ratings behind it against 56, 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 48% of ShiftWork's.

Calendars ships an update every 11 days, ShiftWork every 3 months. The most recent releases landed on September 26, 2026 and September 5, 2026 respectively.

## The numbers

| Metric | Calendars | ShiftWork |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (122K ratings)](https://appshunter.io/ios/app/calendars-schedule-planner/id608834326/reviews) | **[4.8 (56 ratings)](https://appshunter.io/ios/app/shiftwork/id622321930/reviews)** |
| Number of ratings | **122K** | 56 |
| Positive reviews | **55.4% of reviews** | 48.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 11 days** | Every 3 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | **#108** | — |
| Size | 408 MB | 13 MB |
| Requires iOS | 18.2 | **14.0** |
| Devices | **iPhone, iPad, Mac, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Readdle Technologies Limited](https://appshunter.io/developer/285035419) | [Akira Takahashi](https://appshunter.io/developer/391327047) |

## What reviewers say

### Calendars

[App page](https://appshunter.io/ios/app/calendars-schedule-planner/id608834326)

**Currently charting:** #108 Top Free · Productivity, #116 Top Grossing · Productivity (US App Store)

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:** Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (18)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calendars PRO 1 Month | $3.99 | per month |
| Calendars by Readdle: Interesting Calendars | $3.99 | per year |
| Calendars PRO 1 Month | $3.99 | per month |
| Calendars PRO 1 Year | $19.99 | per year |
| Calendars PRO 1 Year | $19.99 | per year |
| Calendars PRO 1 Year | $19.99 | per year |
| Calendars PRO 1 Year | $19.99 | per year |
| Calendars PRO 1 Year | $21.99 | per year |
| Calendars PRO 1 Year | $29.99 | per year |
| Calendars PRO Lifetime | Free | one-time |
| Invites & Attendees Upgrade | $1.99 | one-time |
| Smart Input Upgrade | $1.99 | one-time |
| Full Upgrade | $4.99 | one-time |
| Interesting Calendars | $5.99 | one-time |
| My schedule planner, Organizer | $6.99 | one-time |
| Full Pack | $12.99 | one-time |
| Reminders & Calendars | $19.99 | one-time |
| Recurring Events | $31.99 | one-time |

**What reviewers like**

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

**What reviewers complain about**

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

**Reported bugs**

- Disappearing events and appointments
- Upgrade process causing data loss
- Freezing and crashing on certain devices

**Requested features**

- 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


### ShiftWork

[App page](https://appshunter.io/ios/app/shiftwork/id622321930)

Easily create custom shift work calendars by registering templates and repeat cycles. View iOS calendar events alongside your shifts, add notes, and sum up monthly totals. Customize the look with various styles and colors.

**Highlights:** Register unlimited shift templates, Register unlimited repeat cycles, Display iOS calendar events, Add unlimited shift work calendars, Add notes to shifts, Sum shifts per month, Choose style and color

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Multi-calendar display | $1.99 | one-time |
| Remove ads and unlock limits | $1.99 | one-time |


## Frequently asked questions

### Is Calendars free?

Calendars is free to download, with in-app purchases available.

### Is ShiftWork free?

ShiftWork is free to download, with in-app purchases available.

### Which has better reviews, Calendars or ShiftWork?

ShiftWork is rated higher. Calendars averages 4.7 out of 5 from 122K ratings, while ShiftWork averages 4.8 from 56 ratings.

### Do Calendars or ShiftWork have ads?

ShiftWork shows ads; Calendars does not.

### Which is updated more often, Calendars or ShiftWork?

Calendars ships an update every 11 days, and ShiftWork every 3 months. Most recently, Calendars was updated on September 26, 2026 and ShiftWork on September 5, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*