# DigitalDNA Bit4id vs Calcolami

The clearest difference is iOS requirement: DigitalDNA Bit4id at 13.0 against Calcolami's 15.0. 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 | DigitalDNA Bit4id | Calcolami |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | Free | — |
| Size | 167 MB | 34 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Bit4id s.r.l](https://appshunter.io/developer/783640533) | [Abu Bakkar Siddik](https://appshunter.io/developer/1883333540) |

## What reviewers say

### DigitalDNA Bit4id

[App page](https://appshunter.io/ios/app/digitaldna-bit4id/id1317751953)

Access websites requiring client authentication using your CNS certificate on a DDNA token. Supports digital signatures (CAdES, PAdES, XAdES) and SSL client authentication. Manage your cryptographic device and communicate via Bluetooth.

**Highlights:** Digital signature (CAdES, PAdES, XAdES), Document and certificate verification, SSL Client Authentication, Cryptographic device management, Bluetooth communication with token

**Features:** macOS Compatibility

**In-app purchases:** none


### Calcolami

[App page](https://appshunter.io/ios/app/calcolami/id6763098635)

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

**In-app purchases:** none


## Frequently asked questions

### Is DigitalDNA Bit4id free?

DigitalDNA Bit4id is free to download, with no in-app purchases.

### Is Calcolami free?

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

### Do DigitalDNA Bit4id or Calcolami have ads?

Neither DigitalDNA Bit4id nor Calcolami 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.*