Most sleep apps want a watch on your wrist or a phone on the mattress. HabitSync asks two things each morning: how long you slept and how you woke up. Then it lines your nights up against your habits, your mood, and your medications, so a bad week of sleep has something to be compared against.
Type in the hours, then pick how you woke up, from Exhausted to Energized. Nothing listens to you sleep and nothing needs charging. If you already keep sleep somewhere else, a spreadsheet with a sleep column imports straight in.
Every habit gets tested against your sleep the same day and the next. Nights that hit your sleep target get tested against your mood. Nothing shows up until there are enough days on both sides and the gap survives a correction for how many things were checked, because comparing a dozen habits against one number turns up coincidences on its own.
A sleep log on its own tells you that you slept badly. The useful part is what else was going on, and that lives in the rest of your day.
A sleep diary. It doesn't read a watch or your phone's sensors. You type in how long you slept and how you woke up, which takes a few seconds, and in return that record sits on the same calendar as everything else you do.
Yes, for the tracking. Logging sleep, the trend line, and the CSV export are all on the free plan, with no card and no expiry. The paid plan adds the full comparison of your sleep against everything else you log. Free still shows you the single strongest pattern it finds.
It can tell you what lines up with your bad nights, which isn't the same as why. Each habit, day note and medication gets compared across the days it happened and the days it didn't, with the sample size shown and weak findings held back. If something keeps showing up, test it on purpose. And if your sleep is the thing you're worried about, bring the record to a doctor.
Only if you log them. Add "Drinks" or "Coffee after 2pm" as a habit and each one gets compared against that night's sleep and the next, the same way as everything else.
Yes. HabitSync is on Google Play and the App Store, and the same account works in the browser, so a morning entry on your phone and a look at the trend on a laptop are the same record.
Related reading: does alcohol affect sleep and how to tell a pattern from a coincidence. Mood gets the same treatment on the mood tracker.