# M vs ShiftCal Shift Work Calendar

The clearest difference is update cadence: ShiftCal Shift Work Calendar at every 5 days against M's every 3 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. M sells 1 one-off in-app purchase and ShiftCal Shift Work Calendar sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

M ships an update every 3 months, ShiftCal Shift Work Calendar every 5 days. The most recent releases landed on October 6, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | M | ShiftCal Shift Work Calendar |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 3 months | **Every 5 days** |
| Size | 15 MB | 112 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [SonicStudio,LLC](https://appshunter.io/developer/1033868534) | [Pablo Almancio](https://appshunter.io/developer/1859498121) |

## What reviewers say

### M

[App page](https://appshunter.io/ios/app/m-start/id6642687626)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Features | $3.99 | one-time |


### ShiftCal Shift Work Calendar

[App page](https://appshunter.io/ios/app/shiftcal-shift-work-calendar/id6757965010)

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ShiftCal PRO Monthly | $2.99 | per month |
| ShiftCal PRO Annual | $11.99 | per year |
| ShiftCal PRO Lifetime | $39.99 | one-time |


## Frequently asked questions

### Is M free?

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

### Is ShiftCal Shift Work Calendar free?

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

### Do M or ShiftCal Shift Work Calendar have ads?

Both M and ShiftCal Shift Work Calendar show ads.

### Which is updated more often, M or ShiftCal Shift Work Calendar?

M ships an update every 3 months, and ShiftCal Shift Work Calendar every 5 days. Most recently, M was updated on October 6, 2026 and ShiftCal Shift Work Calendar on October 12, 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.*