Wifi Analyzer (no LOCATION)

This version is for Android 6+. More info down "*"

Wifi Analyzer will provide useful information about wireless signals around you. App supports 2.4Ghz and 5Ghz.

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Short explanation:
- this app will probably work on your Android 6 device without LOCATION need

Full explanation:
- apps made on Google Development Kit for Android 6 (SDK 23 - recommended by Google) requires LOCATION
- apps made on older development kit (for example Android 5 - SDK 22) are still functional in compatibility mode without LOCATION need (mostly)
- google play blocks any downgrade for apps made on SDK 23 to lower (SDK 22)
- original app (functionality for now very same) made on recommended SDK 23 with 1M+ downloads here: https://play.google.com/store/apps/details?id=cz.webprovider.wifianalyzer
- both version of this one app will remain active - I don't know how long will be this "older SDK" version works, could be years

Some info about this new terribly feature written on Google's official Android website:
http://developer.android.com/about/versions/marshmallow/android-6.0-changes.html#behavior-hardware-id
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- Helps to find optimal placement for wifi receivers
- Provides you information individualy on wifi channels
- Shows signal strength in history graph
- Recommends the best channel for new AP
- Information of the channel width (20/40/80MHz - only Android 6+)