# Global Time Machine vs RPNu

The clearest difference is in-app purchases: RPNu at none against Global Time Machine's 2. RPNu also leads on iOS requirement (15.0 vs 17.0). Global Time Machine's advantage is update cadence (every 4 days vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. Global Time Machine sells 2 in-app purchases, starting at $0.99 per month. RPNu asks for nothing beyond the download.

Global Time Machine ships an update every 4 days, RPNu every 2 months. The most recent releases landed on October 29, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Global Time Machine | RPNu |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (7 ratings)](https://appshunter.io/ios/app/global-time-machine/id1082674619/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 58.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 2 months |
| Monetization | Free | — |
| Size | 11 MB | 49 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, Mac, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [theMakeApp](https://appshunter.io/developer/1014975385) | [Scott Johnson](https://appshunter.io/developer/580251998) |

## What reviewers say

### Global Time Machine

[App page](https://appshunter.io/ios/app/global-time-machine/id1082674619)

Easily track the time in any city worldwide. Add locations to your list to plan international calls, meetings, or connect with loved ones abroad. Features DST support and quick access to nearby hours.

**Highlights:** Track time in over 20,000 cities, View nearby hours by scrolling, Convenient world clock interface, DST support for all locations, Shake to reset functionality

**Features:** Apple Watch app, Vision Pro support, iPhone Duo support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium · Monthly | $0.99 | per month |
| Premium · Yearly | $9.99 | per year |


### RPNu

[App page](https://appshunter.io/ios/app/rpnu/id1195709318)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Global Time Machine free?

Global Time Machine is free to download, with in-app purchases available.

### Is RPNu free?

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

### Do Global Time Machine or RPNu have ads?

Neither Global Time Machine nor RPNu shows ads.

### Which is updated more often, Global Time Machine or RPNu?

Global Time Machine ships an update every 4 days, and RPNu every 2 months. Most recently, Global Time Machine was updated on October 29, 2026 and RPNu on October 26, 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.*