some months ago I have written a very simple addon for my personal use, that enables my phone to beep if a specific heart rate is reached. At the moment it only works with android 4.4 or maybe higher... (but I will change that in future).
1.In your phone: Settings -> Security -> 'Allow installation of apps from unknown sources'
2.Download and install the apk from this post
Usage and first test:
1. open the app 'Locus - addon...' , the Locus symbol with the heart
2. to test that your phone will beep:
- enter some value greater than 1 in the field left of ' beep if HR is lower' and check the checkbox at the right and 'Save Settings'
- open locus pro and verify that there is one real important setting checked: Settings -> Miscellaneous -> 'Enable Periodic updates' , without this, there will be no beep!
Now you should hear a single beep every five seconds or so.
If you hear that beep it works! (check your system sound settings, if you don't hear anything)
I took the sounds from a heart rate monitor in an emergency station. Maybe I make the sounds configurable, or some vibration...
Now you can activate your heart rate belt and connect it to Locus pro with the Bluetooth Manager and your smartphone should beep, dependend on your current heart rate.
The addon must not run always, it just works in background, the Userinterface is only for setting the alert zones. (if you forget to disable the checkbox 'beep if HR is lower', your smartphone will always start to beep, if you start Locus pro, even without a heart rate sensor in use.
It's my first Android app so be patient with me!
But I will try to help, if you get problems.