# kVA Calculator vs Smooth Clock

The clearest difference is price: kVA Calculator at Free against Smooth Clock's $0.99. Smooth Clock's advantage is ads (none vs shown). On update cadence, in-app purchases, device support and iOS requirement there is nothing between them.

kVA Calculator is free to download; Smooth Clock costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

kVA Calculator ships an update every 6 months, Smooth Clock every 11 months. The most recent releases landed on September 21, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | kVA Calculator | Smooth Clock |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.4 (11 ratings)](https://appshunter.io/ios/app/kva-calculator/id467407057/reviews)** | — |
| Number of ratings | **11** | — |
| Positive reviews | 41.7% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 6 months** | Every 11 months |
| Monetization | Ad-supported | — |
| Size | 10 MB | 1 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Pro Certs Software Ltd](https://appshunter.io/developer/444429696) | [Piet Jonas](https://appshunter.io/developer/288060167) |

## What reviewers say

### kVA Calculator

[App page](https://appshunter.io/ios/app/kva-calculator/id467407057)

Easily calculate and convert electrical values like kVA, kW, Amps, Volts, and Power Factor. Supports both single and three-phase calculations for engineers working with power systems.

**Highlights:** Calculate kVA, kW, Amps, Volts, Power Factor, Single Phase Calculations, Three Phase Calculations, Convert between electrical units, Intuitive input for two values to find the third

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

**In-app purchases:** none


### Smooth Clock

[App page](https://appshunter.io/ios/app/smooth-clock/id482921576)

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

**In-app purchases:** none


## Frequently asked questions

### Is kVA Calculator free?

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

### Is Smooth Clock free?

Smooth Clock costs $0.99, with no in-app purchases.

### Do kVA Calculator or Smooth Clock have ads?

kVA Calculator shows ads; Smooth Clock does not.

### Which is updated more often, kVA Calculator or Smooth Clock?

kVA Calculator ships an update every 6 months, and Smooth Clock every 11 months. Most recently, kVA Calculator was updated on September 21, 2026 and Smooth Clock on September 28, 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.*