# World Time Calc vs Shift

The clearest difference is in-app purchases: Shift at none against World Time Calc's 1. Shift also leads on update cadence (every 5 days vs every 6 weeks) and iOS requirement (14.0.0 vs 16.0). World Time Calc's advantage is review sentiment (67% vs 33%). On ads and device support there is nothing between them.

World Time Calc ships an update every 6 weeks, Shift every 5 days. The most recent releases landed on October 10, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | World Time Calc | Shift |
| --- | --- | --- |
| Price | **Free** | — |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/shift/id6793012075/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | **66.7% of reviews** | 33.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 6 weeks | **Every 5 days** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 10 MB | 60 MB |
| Requires iOS | 16.0 | **14.0.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hajime Suzuki](https://appshunter.io/developer/1615906018) | [CROP, K.K.](https://appshunter.io/developer/1812834579) |

## What reviewers say

### World Time Calc

[App page](https://appshunter.io/ios/app/world-time-calc-time-converter/id6472414655)

Visualize day/night cycles and working hours across different cities with an interactive timeline. Receive custom notifications for sunrise and sunset. Manually adjust work hours for precise scheduling.

**Highlights:** Day/night and working hour graphs, Automatic time updates, Manual work hour adjustment, Interactive time cursor, Sunrise/sunset alarm notifications

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PremiumPlan | $7.99 | one-time |


### Shift

[App page](https://appshunter.io/ios/app/shift/id6793012075)

This app delivers motivational quotes throughout your day, tailored to your needs. It learns from your interactions to personalize the messages and can send them via notifications or widgets. Explore a curated collection of impactful words from notable figures.

**Highlights:** Personalized quote selection, Customizable notifications, Home and lock screen widgets, Curated quotes from notable figures, Shareable quote images, Daily attendance tracking

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

**In-app purchases:** none


## Frequently asked questions

### Is World Time Calc free?

World Time Calc is free to download, with in-app purchases available.

### Is Shift free?

Pricing for Shift is not currently listed on the App Store.

### Do World Time Calc or Shift have ads?

Both World Time Calc and Shift show ads.

### Which is updated more often, World Time Calc or Shift?

World Time Calc ships an update every 6 weeks, and Shift every 5 days. Most recently, World Time Calc was updated on October 10, 2026 and Shift on October 7, 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.*