# Smooth Clock vs ElectriCalc Pro

The clearest difference is price: ElectriCalc Pro at Free against Smooth Clock's $0.99. Smooth Clock's advantage is in-app purchases (none vs 2). On update cadence, ads, device support and iOS requirement there is nothing between them.

ElectriCalc Pro is free to download; Smooth Clock costs $0.99 up front. ElectriCalc Pro sells 2 in-app purchases, starting at $4.99 per month. Smooth Clock asks for nothing beyond the download.

Smooth Clock ships an update every 11 months, ElectriCalc Pro every 10 months. The most recent releases landed on September 28, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Smooth Clock | ElectriCalc Pro |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[4.9 (354 ratings)](https://appshunter.io/ios/app/electricalc-pro/id569677304/reviews)** |
| Number of ratings | — | **354** |
| Positive reviews | — | 78.1% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 10 months** |
| Monetization | — | Free with in-app purchases |
| Size | 1 MB | 29 MB |
| Requires iOS | 15.6 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Piet Jonas](https://appshunter.io/developer/288060167) | [Calculated Industries](https://appshunter.io/developer/370406449) |

## What reviewers say

### Smooth Clock

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

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

**In-app purchases:** none


### ElectriCalc Pro

[App page](https://appshunter.io/ios/app/electricalc-pro/id569677304)

This app provides electricians and electrical professionals with a powerful tool for performing complex calculations based on the latest National Electrical Code (NEC). It offers solutions for wire sizing, voltage drop, conduit sizing, and motor calculations, saving time and ensuring code compliance.

**Highlights:** NEC compliant calculations, Wire and conduit sizing, Voltage drop calculations, Motor full-load amps, Ohm's Law solver, Built-in help and tutorials

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month Full Access | $4.99 | per month |
| 1 Year Full Access | $39.99 | per year |


## Frequently asked questions

### Is Smooth Clock free?

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

### Is ElectriCalc Pro free?

ElectriCalc Pro is free to download, with in-app purchases available.

### Do Smooth Clock or ElectriCalc Pro have ads?

Neither Smooth Clock nor ElectriCalc Pro shows ads.

### Which is updated more often, Smooth Clock or ElectriCalc Pro?

Smooth Clock ships an update every 11 months, and ElectriCalc Pro every 10 months. Most recently, Smooth Clock was updated on September 28, 2026 and ElectriCalc Pro on September 19, 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.*