KozBon

KozBon

Find devices on your network

5 ratings
3 reviews
Free

Details

Released
January 17, 2017
Updated
October 19, 2026
KozBon screenshot #1 for iPhone
KozBon screenshot #2 for iPhone
KozBon screenshot #3 for iPhone
KozBon screenshot #4 for iPhone
KozBon screenshot #5 for iPhone
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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

4.9.2

October 19, 2026

New in 4.9.2 Siri and Shortcuts can do much more with KozBon. Find a kind of device, check whether one is online, explain a service type, and start or stop broadcasting, all in your language. • Find Services: "Find printers with KozBon" scans for just one kind of device. • Check If Device Is Online: answers yes or no, ready for Shortcuts automations. • Explain a Service Type: Siri reads a short explanation from the AI you chose in Settings. • Broadcast a Service and Stop Broadcasting, hands-free. • Open Service in KozBon: jump straight to a service a Shortcuts step found. • A new Using Siri with KozBon section in Settings suggests phrases to try, with ideas for Shortcuts automations. • Siri now counts devices rather than services, and tells you when you're not on Wi-Fi or Ethernet. • On service and library details, the Insights button moves into the navigation bar as you scroll, so it stays in reach. • Smoother ambient background animation.

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User reviews

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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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!

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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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.

Developer apps

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.