WiFi SNR
Signal-Strength is not the only reason for bad WiFi speeds, as popularly believed. Research indicates that WiFi speed (throughput) depends on Link Speed, Signal-to-Ratio (SNR) and Signal Strength. When a WiFi device (such as your laptop or iPad) is far away from your WiFi Router, the Signal-to-Noise Ratio and Signal–Strength decreases. As a result, your device auto-adjusts the Link Speed to a lower value in order to handle packet loss and interference.
This app provides WiFi Link Speed, Signal-to-Noise Ratio and Signal Strength of your WiFi connection. You can easily identify how your WiFi performance changes in different locations (at your home or office).
Version 1.2-----------------1. Support for landscape (horizontal screen) mode2. Option to show/hide the text results (to increase the graph viewing area)3. "Help Screens" to describe the technical terminologies4. Improved app stability
Version 1.1-----------------1. Provides graphs for WiFi Link Speed, Signal-to-Noise Ratio and Signal Strength of your WiFi connection
* Current, Average and Moving Average values2. Customize the Display
* Enable/Disable individual Graphs
* Enable/Disable Moving Average Graphs3. Customize the Calculations
* Set the “Interference Range” to calculate Signal-to-Noise Ratio
* Set the “Moving Average” interval
Category : Tools
Reviews (29)
Broken SNR is always zero, same for strength. SSID detection is broken on Android 11
crashing and not working
Too hard to read. Samsung s8
Permissions to use wifi are broken.
Cannot see SNR on my Huawei Mate 20
You need to update this, it would be nice to have.
Used it for a yr with my old phone. Upgraded router to ac and new phone w mm. No matter what I do. It shows horrible noise. It is also very hard to see it now on a nexus 6. If it were being supported. I would help Dev to work on it. But, appears abandoned now. Time to move. Shame, was a good app.
I was interested in this app because it claims to show signal to noise ratio. However the figures it gives on my Samsung S4 seem very wrong. The value given for a certain 802.11a network hovered around -6 dB which would be appaling if true. A Fluke analyser gave a value of about +65 dB.
Not sure if SNR calculation/reporting is correct. If i sit close, but notto close to the router with no other 2.4ghz devices around the speed test shows around 100mbit/s which is about right. (Android wifi manager reports connection as "strong" and speed in the 100s). Signal is reported as around -50dBm but SNR is reported as between -5 to +15dBm which means I have a shocking connection and it should barely be connected... so it doesnt seem like SNR is correct? Is this a kown issue? I am using a Samsung S5
I used this app to see why my A radio wasn't working as well as my B radio. The SNR on A was bad compared to the B. I'll have to deploy another dual band WAP. Excellent app!
But link speed graph is helpful. Sadly crashes when I click settings on Samsung Tab S 8.4 with Android 5.0.2. Report sent.
The app provides a dbm measurement enabling me to identify areas with weak wifi signal availability.
This is not SNR or CNR. Displays the absolute power (correct or not). Great idea but would be nice if it actually was what it states. Keep working on it.
Great app. No other provides SINR. Buggy. Works intermittently. SINR reading is often erroneous or equal to signal strength reading. Please note.
I tried this app to find the signals of wifi in my house. Only issue is i took it to an extreme where there is no signal and the application crashed on my LG optimus. Nevertheless it did what it said.
Very helpful to diagnose wifi signal strength and effects of interference. However, the SNR value drops down to the wifi signal strength every few seconds on my home network, and this seems to be an inconsistent reading in the app rather than something that is actually happening to the signal.
Got app for snr. Clearly not accurate. Will delete. Galaxy s4
Have been using this for years and its still my favorite app. The plotter is overplotted and its a great visual that will drive an engineer crazy
much better then a wifi analyzer app that just scans for wifis, like my Android can't already do that :p
It does not give much informative about access point. It doesn't display ssid, channel, frequency used of Access point.
Good job on the app, very easy to use. However im not confident on you SNR values, as it defers greatly from the value that my Macbook pro laptop gives out. What is the accuracy level for the SNR value?
The app seems to operate as expected. However the value for 2.4G SNR drops to the same level as 2.4G Signal Strength. Is this meant to be the case?
The app does not show signal to noise ratio. It also stops responding when I click on Settings in menu. It only shows link speed and actual signal strength.
The app is very nice. UI is good. Add more features and more rich UI.
gives most important number, snr. nice graphing and simple
On a modern phone everything is so small it's near useless
Great app. It misses more data and information regarding encryption, protocol...
Why SNR on my note2 show in negative value ? It's show like -65 dBm.
I can't use it on Android Pie 9.0 on my Xiaomi Mi A2, please fix it, i really need it for my job