# Calendars vs Shift Calendar

The clearest difference is ratings volume: Calendars at 122K against Shift Calendar's 1. Calendars also leads on update cadence (weekly vs monthly) and chart position (#132 vs unranked). Shift Calendar's advantage is rating (5.0 vs 4.7) and iOS requirement (12.0 vs 18.2). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Calendars sells 18 in-app purchases, starting at $3.99 per month and Shift Calendar sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Shift Calendar holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Calendars has 122K ratings behind it against 1, so its average is the more settled of the two.

Calendars ships an update weekly, Shift Calendar monthly. The most recent releases landed on October 31, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Calendars | Shift Calendar |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (122K ratings)](https://appshunter.io/ios/app/calendars-schedule-planner/id608834326/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/shift-calendar-auto-schedule/id6476062772/reviews)** |
| Number of ratings | **122K** | 1 |
| Positive reviews | 55.8% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Monthly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | **#132** | — |
| Size | 413 MB | 35 MB |
| Requires iOS | 18.2 | **12.0** |
| Devices | **iPhone, iPad, Mac, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Readdle Technologies Limited](https://appshunter.io/developer/285035419) | [晨 房](https://appshunter.io/developer/1683285100) |

## What reviewers say

### Calendars

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

**Currently charting:** #132 Top Free · Productivity, #142 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, iPhone Duo 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


### Shift Calendar

[App page](https://appshunter.io/ios/app/shift-calendar-auto-schedule/id6476062772)

This calendar app is designed for shift workers, offering automatic calculation of time off for work cycles. It also includes additional tools specifically for managing shift-related schedules.

**Highlights:** Shift worker focus, Automatic time off calculation, Work cycle scheduling, Shift-related tools

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Shift Calendar Premium | $9.99 | one-time |


## Frequently asked questions

### Is Calendars free?

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

### Is Shift Calendar free?

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

### Which has better reviews, Calendars or Shift Calendar?

Shift Calendar is rated higher. Calendars averages 4.7 out of 5 from 122K ratings, while Shift Calendar averages 5.0 from 1 ratings.

### Do Calendars or Shift Calendar have ads?

Neither Calendars nor Shift Calendar shows ads.

### Which is updated more often, Calendars or Shift Calendar?

Calendars ships an update weekly, and Shift Calendar monthly. Most recently, Calendars was updated on October 31, 2026 and Shift Calendar on October 24, 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.*