# DigitalDNA Bit4id vs P.A.S.S.I.

The clearest difference is update cadence: P.A.S.S.I. at every 2 weeks against DigitalDNA Bit4id's every 2 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.

DigitalDNA Bit4id ships an update every 2 months, P.A.S.S.I. every 2 weeks. The most recent releases landed on October 19, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | DigitalDNA Bit4id | P.A.S.S.I. |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 167 MB | 115 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Bit4id s.r.l](https://appshunter.io/developer/783640533) | [Beewired informatica e internet](https://appshunter.io/developer/1552916996) |

## 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


### P.A.S.S.I.

[App page](https://appshunter.io/ios/app/passi/id6761125566)

**In-app purchases:** none


## Frequently asked questions

### Is DigitalDNA Bit4id free?

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

### Is P.A.S.S.I. free?

P.A.S.S.I. is free to download, with no in-app purchases.

### Do DigitalDNA Bit4id or P.A.S.S.I. have ads?

Neither DigitalDNA Bit4id nor P.A.S.S.I. shows ads.

### Which is updated more often, DigitalDNA Bit4id or P.A.S.S.I.?

DigitalDNA Bit4id ships an update every 2 months, and P.A.S.S.I. every 2 weeks. Most recently, DigitalDNA Bit4id was updated on October 19, 2026 and P.A.S.S.I. on October 24, 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.*