# Power world vs NixiTubeClock

The clearest difference is price: Power world at Free against NixiTubeClock's $1.99. Power world also leads on iOS requirement (12.0 vs 26.2). NixiTubeClock's advantage is chart position (#198 vs unranked). On ads, in-app purchases and device support there is nothing between them.

Power world is free to download; NixiTubeClock costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Power world | NixiTubeClock |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 3 weeks |
| Best chart rank | — | **#198** |
| Size | 173 MB | 31 MB |
| Requires iOS | **12.0** | 26.2 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Guangdong Chico Electronic Inc.](https://appshunter.io/developer/1238601940) | [kohei yamane](https://appshunter.io/developer/1239055575) |

## What reviewers say

### Power world

[App page](https://appshunter.io/ios/app/power-world/id6657960539)

**In-app purchases:** none


### NixiTubeClock

[App page](https://appshunter.io/ios/app/nixitubeclock/id6757656216)

**Currently charting:** #198 Top Paid · Utilities (US App Store)

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

**In-app purchases:** none


## Frequently asked questions

### Is Power world free?

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

### Is NixiTubeClock free?

NixiTubeClock costs $1.99, with no in-app purchases.

### Do Power world or NixiTubeClock have ads?

Neither Power world nor NixiTubeClock shows ads.

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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.*