# W vs Inowattio

The clearest difference is in-app purchases: W at none against Inowattio's 4. Inowattio's advantage is update cadence (fortnightly vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Inowattio sells 4 one-off in-app purchases. W asks for nothing beyond the download.

W ships an update every 3 months, Inowattio fortnightly. The most recent releases landed on November 4, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | W | Inowattio |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Size | 29 MB | 74 MB |
| Requires iOS | **15** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [LumenRadio AB](https://appshunter.io/developer/1443137236) | [Inowattio SRL](https://appshunter.io/developer/1735922003) |

## What reviewers say

### W

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

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

**In-app purchases:** none


### Inowattio

[App page](https://appshunter.io/ios/app/inowattio/id6479408995)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 5 Credits | $0.99 | one-time |
| 50 Credits | $9.99 | one-time |
| 250 Credits | $49.99 | one-time |
| 500 Credits | $99.99 | one-time |


## Frequently asked questions

### Is W free?

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

### Is Inowattio free?

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

### Do W or Inowattio have ads?

Neither W nor Inowattio shows ads.

### Which is updated more often, W or Inowattio?

W ships an update every 3 months, and Inowattio fortnightly. Most recently, W was updated on November 4, 2026 and Inowattio on October 25, 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.*