# HDI Authenticator vs EchoRecorder

The clearest difference is ads: HDI Authenticator at none against EchoRecorder's shown. HDI Authenticator also leads on device support (3 vs 1) and iOS requirement (11.0 vs 17.6). EchoRecorder's advantage is update cadence (daily vs every 4 months). On price and in-app purchases there is nothing between them.

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

HDI Authenticator ships an update every 4 months, EchoRecorder daily. The most recent releases landed on October 7, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | HDI Authenticator | EchoRecorder |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Daily** |
| Monetization | — | Free with in-app purchases |
| Size | 22 MB | 5 MB |
| Requires iOS | **11.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [KOREAEXPERT](https://appshunter.io/developer/1161606505) | [HUJIN SHIN](https://appshunter.io/developer/1516817833) |

## What reviewers say

### HDI Authenticator

[App page](https://appshunter.io/ios/app/hdi-authenticator/id1642884813)

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

**In-app purchases:** none


### EchoRecorder

[App page](https://appshunter.io/ios/app/echorecorder-voice-recorder/id6806891469)

This utility app allows for instant voice recording and playback. It's designed for quick reviews and saving audio for practice, rehearsals, or capturing ideas. Features include quick recording, locked recording, and automatic playback.

**Highlights:** Instant recording, Automatic playback, Slide-up lock recording, Dark Mode support, Quick audio review

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

**In-app purchases:** none


## Frequently asked questions

### Is HDI Authenticator free?

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

### Is EchoRecorder free?

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

### Do HDI Authenticator or EchoRecorder have ads?

EchoRecorder shows ads; HDI Authenticator does not.

### Which is updated more often, HDI Authenticator or EchoRecorder?

HDI Authenticator ships an update every 4 months, and EchoRecorder daily. Most recently, HDI Authenticator was updated on October 7, 2026 and EchoRecorder on October 11, 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.*