# RTUBlue vs eTag Assistant

The clearest difference is update cadence: eTag Assistant at every 6 days against RTUBlue's every 5 months. eTag Assistant also leads on iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

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

RTUBlue ships an update every 5 months, eTag Assistant every 6 days. Both last shipped on October 7, 2026.

## The numbers

| Metric | RTUBlue | eTag Assistant |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 6 days** |
| Size | 57 MB | 98 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Enetics, Inc.](https://appshunter.io/developer/1778715029) | [PAVO Technology Co., Ltd.](https://appshunter.io/developer/1858483486) |

## What reviewers say

### RTUBlue

[App page](https://appshunter.io/ios/app/rtublue/id6737986411)

**Features:** macOS Compatibility

**In-app purchases:** none


### eTag Assistant

[App page](https://appshunter.io/ios/app/etag-assistant/id6756094402)

**In-app purchases:** none


## Frequently asked questions

### Is RTUBlue free?

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

### Is eTag Assistant free?

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

### Do RTUBlue or eTag Assistant have ads?

Neither RTUBlue nor eTag Assistant shows ads.

### Which is updated more often, RTUBlue or eTag Assistant?

RTUBlue ships an update every 5 months, and eTag Assistant every 6 days. Most recently, RTUBlue was updated on October 7, 2026 and eTag Assistant on October 7, 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.*