# Doosan Authenticator vs BLUEMAX ESP

The clearest difference is update cadence: Doosan Authenticator at fortnightly against BLUEMAX ESP's every 3 months. 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.

Doosan Authenticator ships an update fortnightly, BLUEMAX ESP every 3 months. The most recent releases landed on September 25, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Doosan Authenticator | BLUEMAX ESP |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 months |
| Size | 13 MB | 29 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KOREAEXPERT](https://appshunter.io/developer/1161606505) | [SECUi Corp.](https://appshunter.io/developer/1607440583) |

## What reviewers say

### Doosan Authenticator

[App page](https://appshunter.io/ios/app/doosan-authenticator/id1441507873)

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

**In-app purchases:** none


### BLUEMAX ESP

[App page](https://appshunter.io/ios/app/bluemax-esp/id6473090718)

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

**In-app purchases:** none


## Frequently asked questions

### Is Doosan Authenticator free?

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

### Is BLUEMAX ESP free?

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

### Do Doosan Authenticator or BLUEMAX ESP have ads?

Neither Doosan Authenticator nor BLUEMAX ESP shows ads.

### Which is updated more often, Doosan Authenticator or BLUEMAX ESP?

Doosan Authenticator ships an update fortnightly, and BLUEMAX ESP every 3 months. Most recently, Doosan Authenticator was updated on September 25, 2026 and BLUEMAX ESP on September 28, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*