# Echa Authenticator vs ImpressionApp

The clearest difference is iOS requirement: Echa Authenticator at 8.0 against ImpressionApp's 13.0. 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.

## The numbers

| Metric | Echa Authenticator | ImpressionApp |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 5 weeks |
| Monetization | — | Free |
| Size | 142 MB | 25 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Avenla Oy](https://appshunter.io/developer/1087284482) | [Nubiaville Limited](https://appshunter.io/developer/1708206095) |

## What reviewers say

### Echa Authenticator

[App page](https://appshunter.io/ios/app/echa-authenticator/id1463501676)

**Features:** macOS Compatibility

**In-app purchases:** none


### ImpressionApp

[App page](https://appshunter.io/ios/app/impressionapp/id6470453064)

Effortlessly manage smart lighting systems with intuitive controls for on/off and brightness. Seamlessly integrate lights by scanning QR codes and access internal services through a streamlined interface.

**Highlights:** Smart lighting management, QR code light integration, On/Off light control, Brightness adjustment, Smart dimming technology, Internal service access

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Echa Authenticator free?

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

### Is ImpressionApp free?

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

### Do Echa Authenticator or ImpressionApp have ads?

Neither Echa Authenticator nor ImpressionApp shows ads.

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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.*