# Shift Calendar vs OWrite Pro

The clearest difference is in-app purchases: Shift Calendar at none against OWrite Pro's 6. Shift Calendar also leads on iOS requirement (15.0 vs 18.0). OWrite Pro's advantage is ads (none vs shown) and update cadence (every 5 days vs every 5 weeks). On price and device support there is nothing between them.

Both are free to download. OWrite Pro sells 6 in-app purchases, starting at $0.99 per month. Shift Calendar asks for nothing beyond the download.

Shift Calendar ships an update every 5 weeks, OWrite Pro every 5 days. The most recent releases landed on October 11, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Shift Calendar | OWrite Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/owrite-pro/id6790085987/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 5 weeks | **Every 5 days** |
| Monetization | — | Free with in-app purchases |
| Size | 39 MB | 21 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Berke YILMAZ](https://appshunter.io/developer/6779793160) | [琳钧 黄](https://appshunter.io/developer/871641610) |

## What reviewers say

### Shift Calendar

[App page](https://appshunter.io/ios/app/shift-calendar-work-roster/id6779793158)

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

**In-app purchases:** none


### OWrite Pro

[App page](https://appshunter.io/ios/app/owrite-pro/id6790085987)

This app integrates notes, tasks, habit tracking, mindful focus sessions, and important date reminders into a single, organized platform. Capture ideas, break down goals, build consistent habits, and stay focused on what matters most.

**Highlights:** Integrated notes with rich text formatting and photo support, Habit tracking with daily streaks or cumulative targets, Task management with subtasks and progress tracking, Mindful focus timer with cumulative hour goals and statistics, Important date tracking with countdowns and widgets, Flexible reminder system with various scheduling options, Home screen for an overview of daily activities

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OWrite Pro Monthly | $0.99 | per month |
| OWrite Pro Monthly | $1.99 | per month |
| OWrite Pro Annual | $9.99 | per year |
| OWrite Pro Annual | $19.99 | per year |
| OWrite Pro Lifetime | $12.99 | one-time |
| OWrite Pro Lifetime | $24.99 | one-time |


## Frequently asked questions

### Is Shift Calendar free?

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

### Is OWrite Pro free?

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

### Do Shift Calendar or OWrite Pro have ads?

Shift Calendar shows ads; OWrite Pro does not.

### Which is updated more often, Shift Calendar or OWrite Pro?

Shift Calendar ships an update every 5 weeks, and OWrite Pro every 5 days. Most recently, Shift Calendar was updated on October 11, 2026 and OWrite Pro on October 25, 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.*