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Every page on this site

A human-readable index. The machine-readable version lives at /sitemap.xml, and a structured summary for AI systems is at /llms.txt.

Product

Roosta — the alarm you have to earn
What Roosta is, how the mission mechanic works, and what it promises.
How it works
The alarm → mission → verify → stop loop, including the escape hatch.
All 17 wake-up missions
Every mission compared by effort, time and what it wakes.
Math mission
Solve problems to stop the alarm
Pricing
What is free, what Premium adds, and why there are no ads on any plan.
Download Roosta
Get Roosta for iOS and Android.
Changelog
What shipped, and when.
Reliable alarms
Why the operating system owns the schedule, not JavaScript.
Works offline
Nothing on the alarm path requires a network.
The escape hatch
Every mission has a timeout and a way out.
Private camera missions
On-device recognition. Frames are never stored or transmitted.
Streaks and achievements
Recomputed from wake history, never a stored counter.

Help

Help centre
Fixes for alarms that do not ring, on iPhone and Android.
iPhone alarm not going off? Every fix, in order
An iPhone alarm that does not ring is almost always caused by ringer volume set to zero, audio routed to Bluetooth headphones or a speaker, an alarm saved for the wrong AM/PM, or a Focus mode. Check those four before anything else — together they explain most cases.
How to change your iPhone alarm sound
Open the Clock app, tap Alarm, tap Edit, choose your alarm, then tap Sound. Pick any built-in tone, or scroll to Pick a Song to use music from your library. Tap Save. The change applies to that alarm only, not all of them.
Why is my alarm not going off?
Alarms fail for four broad reasons: the sound cannot be heard (volume or Bluetooth routing), the alarm was never scheduled correctly (wrong AM/PM or an unsaved edit), the system suppressed it (Focus or battery optimisation), or the app scheduling it was killed by the operating system.
Do alarms work on silent and Do Not Disturb?
Yes. On both iPhone and Android, alarms set in the system clock are designed to sound through silent mode and Do Not Disturb. Alarms that stay silent are usually caused by ringer volume at zero, Bluetooth audio routing, or a custom Focus mode rather than by silent mode itself.
Do alarms work in airplane mode?
Yes. Alarms are scheduled locally on the device, so airplane mode, no SIM and no Wi-Fi all leave them working normally on both iPhone and Android. The exception is third-party alarm apps that fetch something — ads, config or sounds — at the moment the alarm fires.
Android alarm not working? Battery settings are usually why
On Android, a third-party alarm that does not fire is usually being killed by manufacturer battery optimisation. Set the app to Unrestricted battery usage, enable Autostart where the manufacturer offers it, and grant the Alarms & reminders permission.

Resources

Sleep inertia
Sleep inertia is the period of impaired alertness and performance immediately after waking. It typically lasts…
Habituation
Habituation is the process by which the brain learns to stop responding to a repeated stimulus that carries no…
Sleep cycle
A sleep cycle is one complete pass through the stages of sleep, from light sleep into deep sleep and then into…
REM sleep
REM sleep is the stage of sleep characterised by rapid eye movement, heightened brain activity resembling wake…
Circadian rhythm
The circadian rhythm is the roughly twenty-four-hour internal cycle that governs sleep timing, alertness, body…
Chronotype
Chronotype is an individual’s natural preference for when to sleep and be active. It is largely genetic, shift…
Sleep debt
Sleep debt is the cumulative difference between the sleep you need and the sleep you actually get. It builds a…
Social jetlag
Social jetlag is the mismatch between your body clock and your social schedule, measured as the difference bet…
Dysania
Dysania describes extreme difficulty getting out of bed in the morning, beyond ordinary reluctance. It is not …
Sleep drunkenness
Sleep drunkenness, clinically called confusional arousal, is a state of confusion and disorientation on waking…
Snooze
Snooze is an alarm function that silences the alarm temporarily and repeats it after a short interval, most co…
Mission alarm clock
A mission alarm clock is an alarm that cannot be dismissed with a single tap. It continues sounding until the …
iPhone alarm not going off? Every fix, in order
Nine real causes of a silent iPhone alarm, ordered by how likely they are, from ringer volume to the recurring silent-alarm bug.
Alarm help articles
Why alarms fail on iPhone and Android, and how to fix them. The largest and least-served topic in this category.
Waking up articles
Getting out of bed when you genuinely cannot — heavy sleepers, sleep inertia, and what actually works.
Sleep science articles
Sleep cycles, chronotypes, sleep debt and the research behind them, without the wellness padding.
Missions articles
How each wake-up mission works, which suits whom, and what the evidence says.
Comparisons articles
Honest comparisons of alarm apps and hardware, including where we lose.
Sleep glossary
Plain definitions of the sleep terms worth knowing.
Blog
Guides on waking up, sleep and alarms.
FAQ
Everything people ask before installing a mission alarm.
Sitemap
Every page on this site.