Wifi Analyzer might be a bit more popular than Network Analyzer. We know about 1 link to it since March 2021 and only 1 link to Network Analyzer. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
For iOS, get an Android device. IOS security means apps like this are much less useful. Net Analyzer (same dev as on Android) is available, homepage at https://techet.net/netanalyzer but reduced capabilities. Source: over 1 year ago
I've not looked in to new apps in years, I still have access to the old free version of inSSIDer but I've also used Wifi Analyzer from farproc (Android only I believe). Cannot vouch for the quality or safety of either at this point. Source: almost 3 years ago
PortDroid - A network security and port scanning Android app
inSSIDer - inSSIDer Essential makes it easy to maintain small business WiFi.
NetMonitor Cell Signal Logging - NetMonitor Cell Signal Logging app helps you in receiving accurate measurements of the speed of the internet and the strength of signals to choose the correct network according to your needs.
NetSpot - NetSpot is a free app for wireless site surveys, Wi-Fi analysis, and troubleshooting
Fastah 4G Finder - Fastah 4G Finder app contains features through which you can access a color map to get an idea about the speed of the internet on your current network.
Vistumbler - Vistumbler is a wireless network scanner for Windows Vista and Windows 7. Features: