# HDI Authenticator vs 카드피커

The clearest difference is in-app purchases: HDI Authenticator at none against 카드피커's 3. HDI Authenticator also leads on ads (none vs shown) and iOS requirement (11.0 vs 15.0). 카드피커's advantage is update cadence (every 2 days vs every 4 months). On price and device support there is nothing between them.

Both are free to download. 카드피커 sells 3 in-app purchases, starting at $1.99 per month. HDI Authenticator asks for nothing beyond the download.

HDI Authenticator ships an update every 4 months, 카드피커 every 2 days. The most recent releases landed on November 7, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | HDI Authenticator | 카드피커 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 2 days** |
| Size | 22 MB | 79 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KOREAEXPERT](https://appshunter.io/developer/1161606505) | [DONGWOO KIM](https://appshunter.io/developer/1882321729) |

## 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


### 카드피커

[App page](https://appshunter.io/ios/app/ai/id6761686211)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 카드피커 프리미엄 | $1.99 | per month |
| 카드피커 VIP | $19.99 | per month |
| 카드피커 프리미엄 초기화 | $0.49 | one-time |


## Frequently asked questions

### Is HDI Authenticator free?

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

### Is 카드피커 free?

카드피커 is free to download, with in-app purchases available.

### Do HDI Authenticator or 카드피커 have ads?

카드피커 shows ads; HDI Authenticator does not.

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

HDI Authenticator ships an update every 4 months, and 카드피커 every 2 days. Most recently, HDI Authenticator was updated on November 7, 2026 and 카드피커 on November 9, 2026.

---

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