

The issue is:
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PebbleKit JS - doesn’t have access to the sound or vibration motor on iOS. Since Apple blocks that functionality unless it’s directly interacted with via the user
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PebbleKit iOS - Might pull it off but you’ll need a separate app on the App Store, however the Pebble watches are just Bluetooth so no guarantee that you’ll get a reading.
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iOS Apps are $100/year to keep up, and for that functionality… not worth it.
There are already apps which do this on Android and works without issue.










Yes Pebble OS is now open source, however I think adding RSSI might only work on newer devices, since classic pebbles are just Bluetooth and Bluetooth le. Though they may have Bluetooth le as a part of pairing?
Still a fun experiment and a good way to see why Bluetooth headphones actually are as reliable as they are.