# Shift Calendar vs Ser

The clearest difference is in-app purchases: Ser at none against Shift Calendar's 4. Ser also leads on ads (none vs shown) and update cadence (every 3 weeks vs every 3 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Shift Calendar sells 4 one-off in-app purchases. Ser asks for nothing beyond the download.

Shift Calendar ships an update every 3 months, Ser every 3 weeks. The most recent releases landed on October 8, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Shift Calendar | Ser |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (144 ratings)](https://appshunter.io/ios/app/shift-calendar-schedule/id1338193231/reviews)** | — |
| Number of ratings | **144** | — |
| Positive reviews | 51.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 27 MB | 91 MB |
| Requires iOS | **11.0** | 12.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [章健 杨](https://appshunter.io/developer/1566849627) | [ITmaskinen Consulting AB](https://appshunter.io/developer/307752055) |

## What reviewers say

### Shift Calendar

[App page](https://appshunter.io/ios/app/shift-calendar-schedule/id1338193231)

Easily manage your work schedule with this app designed for shift workers. Customize your shifts, generate schedules automatically, and add important notes to your calendar.

**Highlights:** Customizable shift work, Automatic cycle scheduling, Calendar notes, Clear shift display

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calendar Notes | $0.99 | one-time |
| Remove Ads | $0.99 | one-time |
| Pro Version | $0.99 | one-time |
| Add User | $0.99 | one-time |


### Ser

[App page](https://appshunter.io/ios/app/ser/id1565105742)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Shift Calendar free?

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

### Is Ser free?

Ser is free to download, with no in-app purchases.

### Do Shift Calendar or Ser have ads?

Shift Calendar shows ads; Ser does not.

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

Shift Calendar ships an update every 3 months, and Ser every 3 weeks. Most recently, Shift Calendar was updated on October 8, 2026 and Ser on October 11, 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.*