# Simple Power Calculator PRO vs WorldTime

The clearest difference is price: WorldTime at Free against Simple Power Calculator PRO's $1.99. Simple Power Calculator PRO's advantage is device support and iOS requirement (15.0 vs 17.0). On in-app purchases there is nothing between them.

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

## The numbers

| Metric | Simple Power Calculator PRO | WorldTime |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | Monthly | — |
| Size | 180 MB | 5 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [Glindemann, Sennoun, Langer GbR](https://appshunter.io/developer/1024972809) | [CLIPPER, N.P.O.](https://appshunter.io/developer/1707154365) |

## What reviewers say

### Simple Power Calculator PRO

[App page](https://appshunter.io/ios/app/simple-power-calculator-pro/id1626489334)

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

**In-app purchases:** none


### WorldTime

[App page](https://appshunter.io/ios/app/worldtime-app/id6466277913)

**In-app purchases:** none


## Frequently asked questions

### Is Simple Power Calculator PRO free?

Simple Power Calculator PRO costs $1.99, with no in-app purchases.

### Is WorldTime free?

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

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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.*