# Stepper Motor Calculator vs W

The clearest difference is price: W at Free against Stepper Motor Calculator's $2.99. W also leads on update cadence (every 3 months vs every 32 months). Stepper Motor Calculator's advantage is iOS requirement (13 vs 15). On ads, in-app purchases and device support there is nothing between them.

W is free to download; Stepper Motor Calculator costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Stepper Motor Calculator ships an update every 32 months, W every 3 months. The most recent releases landed on October 29, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Stepper Motor Calculator | W |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 32 months | **Every 3 months** |
| Size | 1 MB | 29 MB |
| Requires iOS | **13** | 15 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nitrio](https://appshunter.io/developer/321121189) | [LumenRadio AB](https://appshunter.io/developer/1443137236) |

## What reviewers say

### Stepper Motor Calculator

[App page](https://appshunter.io/ios/app/stepper-motor-calculator/id1367815636)

**Features:** macOS Compatibility

**In-app purchases:** none


### W

[App page](https://appshunter.io/ios/app/w-modbus/id6472275984)

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

**In-app purchases:** none


## Frequently asked questions

### Is Stepper Motor Calculator free?

Stepper Motor Calculator costs $2.99, with no in-app purchases.

### Is W free?

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

### Do Stepper Motor Calculator or W have ads?

Neither Stepper Motor Calculator nor W shows ads.

### Which is updated more often, Stepper Motor Calculator or W?

Stepper Motor Calculator ships an update every 32 months, and W every 3 months. Most recently, Stepper Motor Calculator was updated on October 29, 2026 and W on October 10, 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.*