Best Bonjour Browser Apps for iPhone (2026): mDNS Service Discovery
Short version. A Bonjour browser lists the services devices advertise on your local network, which is often the fastest way to identify an unlabelled device. PingKit includes one free that browses 37 common service types and shows the TXT records each service publishes, which is where the useful detail lives.
Bonjour is Apple's implementation of zero-configuration networking. Devices announce what they can do over multicast DNS, which is how your iPhone finds an AirPlay speaker or a printer without anyone typing an IP address. A Bonjour browser simply lists those announcements, and it is one of the most underrated diagnostic tools on a home network.
Full disclosure: I build PingKit, so weigh the recommendation accordingly. The comparison below is written to stay useful even if you pick something else, and the limits section is not padding. Competitor features and pricing change, so check the current listing before you decide.
Why This Beats a Ping Sweep for Identification
A ping sweep tells you an IP address responded. A Bonjour browser tells you what the thing at that address believes it is. A device advertising _airplay._tcp and _raop._tcp is an AirPlay receiver. One advertising _ipp._tcp is a printer. One advertising _googlecast._tcp is a Chromecast or a TV with it built in.
This matters more on iPhone than on a desktop, because modern iOS returns a placeholder MAC address for network peers. The traditional identification route, looking up the vendor from the MAC prefix, is unreliable. Service advertisements are the better signal, and in practice they identify more devices.
What to Look For in a Browser
| Feature | Why it matters |
|---|---|
| Number of service types browsed | Determines what you will see at all |
| TXT record display | Where model names and versions actually live |
| Resolved IP and port | Lets you act on what you find |
| Links into other tools | Jump from a discovery to a port scan or ping |
| No ads or account | This is a diagnostic tool, not a social app |
TXT records are the part people miss. A HomeKit accessory publishes a category identifier in its TXT record. Many devices publish a model string. That is often the difference between "something at 192.168.1.47" and "a second-generation HomePod".
PingKit's Bonjour Browser
Free, no ads, no account. It browses 37 common service types covering AirPlay, RAOP, HomeKit, printing (IPP and LPD), SMB, SSH, SFTP, Google Cast, Spotify Connect, companion-link, sleep proxy, HTTP and HTTPS and others. Each discovered service expands to show its resolved host, port and full TXT record set as key and value pairs.
Results feed the LAN Scanner's device naming, so a device that advertises itself is usually already labelled by the time you look at the device list.
Honest limit. The browser queries a curated list of 37 service types rather than performing a meta-query for every service type in use on the network. A device advertising only an unusual or proprietary service type will not appear. This covers the overwhelming majority of consumer and office equipment, but it is not exhaustive discovery.
Other Options
Discovery (Mac and iOS) is the long-standing specialist in this category and does exhaustive service-type enumeration. If Bonjour browsing specifically is your main need rather than one tool among many, it is worth a look.
Scany and iNet include Bonjour discovery as part of broader scanners, with varying depth of TXT record display.
On a Mac, dns-sd -B _services._dns-sd._udp local. in Terminal enumerates every service type actually present, then dns-sd -L resolves an individual one. That is the exhaustive approach, and it is free and already installed.
Troubleshooting: Nothing Shows Up
- Check you are on WiFi, not cellular. mDNS is link-local and does not cross the internet.
- Client isolation. Many guest networks block device-to-device traffic entirely, including multicast.
- Multicast filtering. Some mesh systems and managed switches suppress multicast by default, which breaks Bonjour across subnets or bands.
- Grant local network permission. iOS prompts for this once. If it was declined, re-enable it in Settings, Privacy and Security, Local Network.
Frequently Asked Questions
What is a Bonjour browser?
A tool that lists the services devices advertise over multicast DNS on your local network. Devices announce capabilities such as AirPlay, printing or file sharing, and a browser shows those announcements along with the host, port and TXT records.
Is there a Bonjour browser for iPhone?
Yes. PingKit includes one free, browsing 37 common service types and displaying full TXT records. Discovery is a well-regarded specialist option, and several network scanners include Bonjour discovery as one feature among many.
Why does Bonjour discovery find devices that a ping sweep misses?
Some devices do not respond to ICMP but do advertise services over mDNS. Service discovery also tells you what a device is, whereas a ping sweep only tells you an address responded.
What are TXT records in Bonjour?
Key and value pairs a service publishes alongside its advertisement. They often contain the model name, firmware version or device category, which makes them the most useful part of a Bonjour record for identifying hardware.
Why can't my iPhone see Bonjour devices?
Common causes are being on cellular rather than WiFi, guest network client isolation, multicast filtering on mesh systems or managed switches, or the app not having local network permission. Check Settings, Privacy and Security, Local Network.
Browse your network the way your devices describe it
PingKit includes a free Bonjour browser with full TXT record display, plus a LAN scanner, port scanner and 16 more tools.
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