About this app

Ever missed some important date while watching a video? Battery down? Connection bad or lost? Expensive Roaming?! Too much download?

That's what these "overlay" apps are for: to display some information all the time, not caring whether the app "below" is a fullscreen app or not. Of course it may overlap other data on the screen, that is why it is very flexible about what data to show, how abbreviated, omitting unnecessary units (don't tell that your physics teacher...), and a quick-hide feature.

"YACO" comes from "Yet another [Clock] Overlay" - I put "clock" in brackets, as it started with a clock, but now it grew to an app showing a whole bunch of information! What could the YACO acronym now stand for? I have no idea.

The app is free and was developed for fun and learning.

Displayable items:

✓ time with and without seconds, date and weekday

✓ battery state, approximate remaining charge/discharge time

✓ GPS data available with speed, height, climb/sink rate and count of satellites, coordinates. Fun to watch in a plane.

✓ there's also the connection state:
Wifi: SSID, speed, frequency, IPV4 address, up-/download indicator, daily or monthly data volume, current up-/download rate
Mobile: connection type, roaming warning, provider, signal strength, up-/download indicator, daily or monthly data volume, up-/download rate
inactive Mobile (DualSIM): signal strength, to be able to see the connection strength of the inactive SIM

AAAAND as just mentioned DualSIM support (>= Android 5.1): information about the voice SIM: carrier, signal strength, roaming warning

It is Android 6 permission restrictions aware, so when you get an Android error "Screen Overlay Detected", or if you are not able to grant a permission by touching the button in the dialog where you shall grant it, it is easy to temporarily disable YACO for 5 minutes using its notification entry's "pause" button. It will automatically re-appear after that time. Simple and effective.

This inconvenience can even be circumvented if you allow YACO to be an "accessibility app" (using a shortcut link inside the app's "Info" page makes it easy). Then it can watch out for the permission dialog and disable itself until it's safe to show up again. This way you have an overlay that does not intervene with the permission popup. Yet you must trust me that I don't use the behaviour checks for anything except the hide and show for that sole purpose (BTW: I do promise I don't!).

If your device has a proximity sensor, covering it can hide YACO so that the items below are uncovered.

I'd like to have feedback (can be done in the app). This is very important for me.

More information is given at the app's homepage, https://android.chk.digital/yaco/. This app lives and grows and improves using your feedback.

Permissions:
- GPS - well, for GPS data
- Access Phone State, Network state, Coarse location data: for the information about the data connection, the Android APIs I use need these.

This app uses Accessibility Services. Well- only if you choose to use the Auto-Hide feature! It is not necessary.

New features

See https://android.chk.digital/yaco-update-history/

App Permissions

Allows an application to receive the ACTION_BOOT_COMPLETED that is broadcast after the system finishes booting.
Allows using PowerManager WakeLocks to keep processor from sleeping or screen from dimming.
Allows an app to create windows using the type TYPE_APPLICATION_OVERLAY, shown on top of all other apps.
Allows access to the vibrator.
Allows applications to connect to paired bluetooth devices.
Allows an app to access approximate location.
Allows an app to access precise location.
Allows an application to write to external storage.
Allows applications to connect to paired bluetooth devices.
Allows an application to collect component usage statistics
Declaring the permission implies intention to use the API and the user of the device can grant permission through the Settings application.
Allows applications to access information about Wi-Fi networks.
Allows applications to access information about networks.
Allows read only access to phone state, including the phone number of the device, current cellular network information, the status of any ongoing calls, and a list of any PhoneAccounts registered on the device.
Allows an application to read from external storage.