# Card4Call HD vs AUTHADA

The clearest difference is price: AUTHADA at Free against Card4Call HD's $2.99. AUTHADA also leads on update cadence (every 2 months vs every 33 months) and device support (3 vs 1). Card4Call HD's advantage is iOS requirement (12.0 vs 15.6). On ads and in-app purchases there is nothing between them.

AUTHADA is free to download; Card4Call HD costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Card4Call HD ships an update every 33 months, AUTHADA every 2 months. The most recent releases landed on March 6, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Card4Call HD | AUTHADA |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Positive reviews | — | 76.2% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 33 months | **Every 2 months** |
| Monetization | — | Free |
| Size | 55 MB | 15 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Giuseppe Cigala](https://appshunter.io/developer/337940988) | [Authada GmbH](https://appshunter.io/developer/1314423801) |

## What reviewers say

### Card4Call HD

[App page](https://appshunter.io/ios/app/card4call-hd/id880634303)

**Features:** macOS Compatibility

**In-app purchases:** none


### AUTHADA

[App page](https://appshunter.io/ios/app/authada/id1479685801)

Securely identify yourself online using your German identity card or residence permit. The app guides you through the process of reading your ID and entering necessary codes for verification.

**Highlights:** Online identification with German ID card, Uses NFC for data reading, PIN and TAN entry for verification, PIN change and unlock functionality, Privacy-focused with BSI certification, Accessible design

**In-app purchases:** none


## Frequently asked questions

### Is Card4Call HD free?

Card4Call HD costs $2.99, with no in-app purchases.

### Is AUTHADA free?

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

### Do Card4Call HD or AUTHADA have ads?

Neither Card4Call HD nor AUTHADA shows ads.

### Which is updated more often, Card4Call HD or AUTHADA?

Card4Call HD ships an update every 33 months, and AUTHADA every 2 months. Most recently, Card4Call HD was updated on March 6, 2026 and AUTHADA on October 25, 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.*