Hi,
wondering if there is any app that works with Fitbit Flex that could track your sleep cycle and wake you silently?
ex. i set up alarm at 7am and fitbit flex would wake me up around 7 am depending on my current sleep cycle.
thank you
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I don't think any app would be able to do this as it would need to sync to your fitbit to update the alarm. You might want to consider raising a feature request for future fitbits though:
https://community.fitbit.com/t5/Feature-Requests/idb-p/features