Plees Tracker is a simple sleep tracker for your Android phone.
The latest version is v7.0.5, released on 2021-01-02. See the release notes.
Description
This is meant to be a very simple open source clone of PrimeNap, i.e. just track sleep start/stop times and count the average / day.
Features:
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It literally does nothing while you sleep, causes no battery drain.
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Stores past sleeps, counts stat from them:
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average of sleep durations
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daily average: in case you sleep multiple times a day or you sometimes skip a whole day
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Exports/imports sleep data to/from CSV (the start and stop columns are UNIX timestamps in milliseconds).
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Can show past sleeps, can selectively delete individual sleeps.
It looks like this:
Download
Get it on F-Droid:
License
Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.