# IngSoft InterWatt (eIAM) vs Bluewash Swiss

IngSoft InterWatt (eIAM) and Bluewash Swiss are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

IngSoft InterWatt (eIAM) ships an update fortnightly, Bluewash Swiss every 3 weeks. The most recent releases landed on September 24, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | IngSoft InterWatt (eIAM) | Bluewash Swiss |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Size | 51 MB | 27 MB |
| Requires iOS | **15.6** | 16.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [IngSoft GmbH](https://appshunter.io/developer/945284664) | [Bluewash](https://appshunter.io/developer/1804342227) |

## What reviewers say

### IngSoft InterWatt (eIAM)

[App page](https://appshunter.io/ios/app/ingsoft-interwatt-eiam/id6740481986)

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

**In-app purchases:** none


### Bluewash Swiss

[App page](https://appshunter.io/ios/app/bluewash-swiss/id6743755793)

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

**In-app purchases:** none


## Frequently asked questions

### Is IngSoft InterWatt (eIAM) free?

IngSoft InterWatt (eIAM) is free to download, with no in-app purchases.

### Is Bluewash Swiss free?

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

### Do IngSoft InterWatt (eIAM) or Bluewash Swiss have ads?

Neither IngSoft InterWatt (eIAM) nor Bluewash Swiss shows ads.

### Which is updated more often, IngSoft InterWatt (eIAM) or Bluewash Swiss?

IngSoft InterWatt (eIAM) ships an update fortnightly, and Bluewash Swiss every 3 weeks. Most recently, IngSoft InterWatt (eIAM) was updated on September 24, 2026 and Bluewash Swiss on October 12, 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.*