# Shift Calendar vs PDF Offline Studio

The clearest difference is in-app purchases: PDF Offline Studio at none against Shift Calendar's 4. PDF Offline Studio also leads on device support (4 vs 2) and iOS requirement (15.0 vs 17.0). On price, update cadence and ads there is nothing between them.

Both are free to download. Shift Calendar sells 4 in-app purchases, starting at $4.99 per 7 days. PDF Offline Studio asks for nothing beyond the download.

Shift Calendar ships an update fortnightly, PDF Offline Studio every 2 weeks. The most recent releases landed on October 30, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Shift Calendar | PDF Offline Studio |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 weeks** |
| Size | 15 MB | 55 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [EMRE KOTUN](https://appshunter.io/developer/1796678115) | [THEJ KUMAR SIDDHOTAM ARULRAJ](https://appshunter.io/developer/1781177167) |

## What reviewers say

### Shift Calendar

[App page](https://appshunter.io/ios/app/shift-calendar-work-schedules/id6756643618)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium Access | $4.99 | per 7 days |
| Monthly Pro | $5.99 | per month |
| Yearly Premium Access | $29.99 | per year |
| Lifetime Pro | $59.99 | one-time |


### PDF Offline Studio

[App page](https://appshunter.io/ios/app/pdf-offline-studio/id6805421343)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Shift Calendar free?

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

### Is PDF Offline Studio free?

PDF Offline Studio is free to download, with no in-app purchases.

### Do Shift Calendar or PDF Offline Studio have ads?

Neither Shift Calendar nor PDF Offline Studio shows ads.

### Which is updated more often, Shift Calendar or PDF Offline Studio?

Shift Calendar ships an update fortnightly, and PDF Offline Studio every 2 weeks. Most recently, Shift Calendar was updated on October 30, 2026 and PDF Offline Studio on October 10, 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.*