# KZero Passwordless vs Md Preview

The clearest difference is price: KZero Passwordless at Free against Md Preview's $2.99. KZero Passwordless also leads on rating (5.0 vs 4.4) and review sentiment (100% vs 71%). Md Preview's advantage is update cadence (every 3 days vs every 5 weeks) and ratings volume (5 vs 1). On ads, in-app purchases and device support there is nothing between them.

KZero Passwordless is free to download; Md Preview costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

KZero Passwordless holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Md Preview has 5 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of KZero Passwordless's written reviews are positive against 71% of Md Preview's.

KZero Passwordless ships an update every 5 weeks, Md Preview every 3 days. The most recent releases landed on October 5, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | KZero Passwordless | Md Preview |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/kzero-passwordless/id1672389184/reviews)** | [4.4 (5 ratings)](https://appshunter.io/ios/app/md-preview-markdown-viewer/id6760341080/reviews) |
| Number of ratings | 1 | **5** |
| Positive reviews | **100.0% of reviews** | 71.4% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 days** |
| Monetization | **Free** | Paid |
| Size | 51 MB | 4 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kelvin Zero](https://appshunter.io/developer/1670753149) | [CyberGame Limited](https://appshunter.io/developer/1778824442) |

## What reviewers say

### KZero Passwordless

[App page](https://appshunter.io/ios/app/kzero-passwordless/id1672389184)

This app provides passwordless authentication for users of the Multi-Pass Pro card. It allows for secure sign-ins to web applications and MPAS services using push notifications and the Pro card. Users can also manage and access information about their Multi-Pass Pro card.

**Highlights:** Passwordless sign-in, Push notification authentication, Manage Multi-Pass Pro card information, Enroll Multi-Pass Pro card, Secure access to web applications

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

**In-app purchases:** none


### Md Preview

[App page](https://appshunter.io/ios/app/md-preview-markdown-viewer/id6760341080)

View your Markdown files with exceptional clarity on iPhone and iPad. Supports all Markdown features, code syntax highlighting, LaTeX math, and Mermaid diagrams. Renders files offline and integrates with other apps.

**Highlights:** Full GFM support (tables, task lists, footnotes), Syntax highlighting for 40+ programming languages, LaTeX math rendering with KaTeX, Mermaid diagram support, Offline rendering on-device, System file handler for .md files, Dark mode with automatic theme switching

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

**In-app purchases:** none


## Frequently asked questions

### Is KZero Passwordless free?

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

### Is Md Preview free?

Md Preview costs $2.99, with no in-app purchases.

### Which has better reviews, KZero Passwordless or Md Preview?

KZero Passwordless is rated higher. KZero Passwordless averages 5.0 out of 5 from 1 ratings, while Md Preview averages 4.4 from 5 ratings.

### Do KZero Passwordless or Md Preview have ads?

Neither KZero Passwordless nor Md Preview shows ads.

### Which is updated more often, KZero Passwordless or Md Preview?

KZero Passwordless ships an update every 5 weeks, and Md Preview every 3 days. Most recently, KZero Passwordless was updated on October 5, 2026 and Md Preview on September 30, 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.*