# ERP Tunable White vs World Clock

The clearest difference is update cadence: World Clock at every 6 weeks against ERP Tunable White's every 4 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ERP Tunable White ships an update every 4 months, World Clock every 6 weeks. The most recent releases landed on October 4, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | ERP Tunable White | World Clock |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 6 weeks** |
| Size | 2 MB | 38 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Erp Power, LLC](https://appshunter.io/developer/1630668225) | [Bhavin Harsoda](https://appshunter.io/developer/1896732789) |

## What reviewers say

### ERP Tunable White

[App page](https://appshunter.io/ios/app/erp-tunable-white/id1630668223)

**Features:** macOS Compatibility

**In-app purchases:** none


### World Clock

[App page](https://appshunter.io/ios/app/world-clock-time-zone-map/id6783319600)

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

**In-app purchases:** none


## Frequently asked questions

### Is ERP Tunable White free?

ERP Tunable White is free to download, with no in-app purchases.

### Is World Clock free?

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

### Do ERP Tunable White or World Clock have ads?

Neither ERP Tunable White nor World Clock shows ads.

### Which is updated more often, ERP Tunable White or World Clock?

ERP Tunable White ships an update every 4 months, and World Clock every 6 weeks. Most recently, ERP Tunable White was updated on October 4, 2026 and World Clock 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.*