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KozBon

KozBon

by Kozinga Ltd.

5 ratings
3 reviews
🔧 Utilities
📊 Productivity
Free

Details

  • Released
  • Updated
  • January 17, 2017
  • June 4, 2026

Developer

Kozinga Ltd.
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About

This utility app helps you find and test Bonjour network services. It allows you to discover existing services, broadcast your own custom services, and browse a large library of pre-configured service types. Designed for all Apple platforms with accessibility features.

✓Discover Bonjour network services
✓Broadcast custom Bonjour services
✓120+ built-in service types
✓Create custom service types
✓Native support for iPhone, iPad, Mac, Vision Pro
✓Full VoiceOver support
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What's New in KozBon

4.5

June 4, 2026

Version 4.5 • Unread-message badge on the Chat tab in portrait and compact windows — clears the moment you scroll to the bottom of the conversation • Wider Discover and Library sidebars on macOS so hostnames and service-type identifiers fit on one line • Tighter tab bar and detail layouts on iPad and macOS • New What's New page in Preferences → About lists every release since 3.0 Version 4.3 • New GitHub Models cloud backend (GPT-4o via GitHub) joins Anthropic Claude as an opt-in cloud assistant • Claude model picker in Preferences — choose which Claude variant to use • Brand-tinted in-app sign-in pages for each cloud provider with native link rows to your API key console Version 4.1 • Chat automatically runs a fresh Bonjour scan when you ask about live network state • Chat session pre-warmed at launch so the first prompt streams without a cold-start lag • Hover effects, Dynamic Type cap, and busy-state hints across the chat tab for accessibility polish Version 4.0 • Brand-new AI Chat tab — ask the on-device Apple Intelligence assistant about Bonjour services and the app • Response-length preference (brief / standard / detailed) carries through every AI surface • Chat remembers the conversation while the app is running • New service filters and animated list transitions when sorting • Settings deep-link surfaces when Apple Intelligence is disabled or unavailable

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User reviews

Most RecentHighest RatedLowest Rated

Updated review. So much value and utility. Works like a charm.

Updating my review. App currently works now. It seems it might have just been a bug on iOS but it works most of the times. I have used it and there are only two other apps that comes close to this. What sets th is apart is the ability to host your own session. I have used it to capture port information across VLANs when I could not run a tcpdump and other useful tools. This is an excellent app and has so many uses for a mobile app. It’s invaluable for those that mess with firewalls and other network sessions they need to do. Also the information it gives on Airplay 2 services with the key listings if you understand them is just too invaluable and productive.
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iDMprorRaNNiDMprorRaNN

Definitely check out this app

This is app is very clean and to the point and just very useful. I can’t believe it only has a few reviews, because it’s the best of its kind. People need to start downloading this app! To the guy who made it, keep the apps coming please!
SkobabSkobab

Hidden gem, better than all other bonjour apps

I just found this app and it is excellent. So this has been here the whole time?! I am sorry that it has not gained traction (yet) because it is an excellent app. I have recently downloaded 5+ other Bonjour scanner-type apps that have more downloads but this one is far superior in that 1: the design is refreshingly simple yet crisp and modern 2:Your application has Bluetooth built in as well.

I haven’t played with the Bluetooth part yet and I also haven’t tried to copy info from the Bonjour pages, but I had to immediately make a review because people are missing out!

To the dev: I wonder if people think it is a proprietary app for a piece of hardware. Anyways thanks for the free app!
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MillermkMillermk

Response from developer

This literally made my day! And thanks for the input! I made this app as a way for me to test an app for hardware that was still in development, but it isn’t proprietary at all. I am planning to update this to support the iOS 14 SDK and will think of ways I can make this app even more useful.

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FAQ

What is KozBon used for?

KozBon is a utility app designed to discover and test Bonjour (mDNS) network services. It allows users to scan their local network for active Bonjour services, view detailed information about them, and broadcast their own custom services for testing purposes.

Does KozBon have ads?

No, KozBon is free, contains no advertisements, and does not require an account to use. This provides an uninterrupted user experience for network service discovery and testing.

What platforms does KozBon support?

KozBon is designed to run natively on all Apple platforms, including iPhone, iPad, Mac, and Apple Vision Pro. It offers platform-specific features to enhance usability on each device.

How often is KozBon updated?

The latest version of KozBon is 3.8, and it was last updated on April 13, 2026. The app is actively maintained, ensuring compatibility and new features are regularly introduced.

Is KozBon suitable for beginners?

Yes, KozBon is built for accessibility with full VoiceOver support and Dynamic Type scaling. It also includes a comprehensive library of over 120 built-in service types, making it easier for users to understand and test various network services.

Can I create my own service types in KozBon?

Absolutely. KozBon allows you to create and save your own custom service type definitions for protocols not found in the built-in library. These custom types can then be used for broadcasting and discovery.

What kind of information does KozBon show for discovered services?

When discovering services, KozBon displays detailed information including the hostname, IP addresses, transport layer, domain, and TXT record metadata. You can also refresh the scan at any time.

What is the user rating for KozBon?

KozBon has an excellent user rating of 5.0 stars, based on 5 ratings. This indicates a very high level of user satisfaction with the app's functionality and performance.