What does Risetime actually do?

Risetime is an alarm clock that ties your wake-up time to a real celestial event. Set "30 minutes before sunrise" once, and the alarm recalculates every day to match the actual sunrise at your location. No manual adjustment needed — one setup, accurate all year.

Does Risetime need an internet connection?

No. Risetime has no internet permission at all — it cannot connect to the internet even if it wanted to. Sunrise and sunset times are calculated on your device using astronomical math. It works in airplane mode, in the field, anywhere.

Does Risetime also handle normal fixed-time alarms?

Yes. Risetime supports both celestial alarms (anchored to sunrise, sunset, noon, or nadir) and standard fixed-time alarms. World clock, timers, and more are on the way.

Is Risetime accurate for Fajr prayer times?

Risetime is not a dedicated Islamic prayer time app, but its sunrise-relative alarms are astronomically precise. Setting an alarm to "45 minutes before sunrise" will track Fajr timing accurately throughout the year, including during Ramadan as sunrise times shift.

Does the alarm still go off if my phone is in Doze mode or Battery Saver?

Yes. Risetime uses Android's setAlarmClock API — the same system-level alarm mechanism used by your built-in clock app. It survives Doze mode, battery optimization, and device restarts.

Can I set an alarm for golden hour or blue hour?

Yes. Set an alarm to "30 minutes before sunset" for golden hour, or "20 minutes after sunset" for blue hour. Both shift automatically as sunset times change through the seasons — perfect for photographers who need to be on location at the right time.

Risetime Sunrise alarm app for Android.

Your celestial alarm clock.

Set your alarm to the sun. It shifts every day so you don't have to.

Risetime alarm list showing five alarms: a sunrise alarm at 07:04, an absolute alarm at 09:00, two noon-relative alarms, and a sunset alarm at 18:00. Each alarm has a coloured anchor chip and a toggle switch.

Google Play Going live soon

How the sunrise alarm works

Pick your anchor Choose a celestial event: sunrise, noon, sunset, or nadir. This is the reference point your alarm tracks.
Set your offset Decide how far before or after. Thirty minutes before sunrise. One hour after sunset. Pick which days it repeats.
That's it Risetime recalculates the exact alarm time every day. Sunrise drifts with the seasons — your alarm follows. You never adjust it.

Features of the Risetime sunrise alarm app

Anchored to the sky

Set alarms relative to sunrise, noon, sunset, or nadir. Choose an offset — the alarm recalculates daily to stay in sync with the real sky. Define it once. It stays right all year.

Offline and private by design

Risetime has no internet permission. Not disabled — absent. Sunrise times are calculated on your device using astronomical math. No servers. No accounts. No data leaves your phone.

Set it, then forget it

The app recalculates your alarm times in the background every day. Most days you never open it. That is by design — Risetime works best when you forget it exists.

Real alarms, not notifications

Risetime uses the same OS-level alarm API as your built-in Android clock. Your alarm survives Doze mode, battery optimization, and device restarts. When it is time to wake up, your phone rings.

Who uses a sunrise alarm app?

Biohackers and circadian rhythm optimisers — set one alarm at sunrise to wake, another 8 hours before sunrise to wind down. Both recalculate daily as daylight hours change. Circadian rhythm alarm guide
Dawn meditators and yoga practitioners — set your practice alarm to sunrise once, and it follows the seasons without any adjustment.
Photographers chasing golden and blue hour — "30 minutes before sunset" for golden hour, "20 minutes after sunset" for blue hour. Both stay accurate all year. Works offline in the field with no cell service. Golden hour alarm guide
Muslim users for Fajr and Suhoor — Risetime is not a Muslim alarm clock app with prayer times or Azan, but its sunrise-relative alarms are precise enough for Fajr timing. Set "45 minutes before sunrise" once; the alarm tracks the real dawn through Ramadan and all year.
Outdoor workers, dog walkers, farmers — if your day starts with daylight, your alarm should too.
Anyone tired of adjusting throughout the year — set it once. It stays right.

Screenshots — sunrise alarm app for Android

Risetime alarm picker dialog showing the five anchor chips (clock, sunrise, noon, sunset, midnight) with Noon selected. An offset of minus 1 hour is set, resolving to 12:07. A circular hour dial is visible below. — Pick your anchor and offset

Risetime alarm dismiss screen with a sunset-toned background showing the time 18:00, the date Wednesday March 18, a large circular Snooze button, and a Dismiss text below. — Wake gently

Risetime settings screen showing Alarm Behaviour, Celestial events location, and Alarm reliability section with five green checkmarks for all permissions. A Supporting Risetime section is visible at the bottom. — Reliability you can check

Offline sunrise alarm — no internet, no tracking

Risetime does not request internet permission. There is no server. There is no account to create. There is no analytics SDK measuring how you use the app.

No INTERNET permission — the app cannot connect to the internet
No analytics, crash reporting, or telemetry of any kind
No accounts, no cloud sync, no sign-in
Location stays on your device — used only for sunrise math
No ads, no tracking, no data shared with anyone

Read the full privacy policy

Free to start. Unlimited with a small contribution.

Risetime is free with up to three alarms — celestial or fixed-time, your choice.
Need more? A small optional contribution adds unlimited alarms — you'll find it in Settings.

No nag screens, no countdowns, no "upgrade to continue" prompts. Just an honest option when you're ready.

Frequently asked questions

What does Risetime actually do?: Risetime is an alarm clock that ties your wake-up time to a real celestial event. Set "30 minutes before sunrise" once, and the alarm recalculates every day to match the actual sunrise at your location. No manual adjustment needed — one setup, accurate all year.
Does Risetime need an internet connection?: No. Risetime has no internet permission at all — it cannot connect to the internet even if it wanted to. Sunrise and sunset times are calculated on your device using astronomical math. It works in airplane mode, in the field, anywhere.
Does Risetime also handle normal fixed-time alarms?: Yes. Risetime supports both celestial alarms (anchored to sunrise, sunset, noon, or nadir) and standard fixed-time alarms. World clock, timers, and more are on the way.
Is Risetime accurate for Fajr prayer times?: Risetime is not a dedicated Islamic prayer time app, but its sunrise-relative alarms are astronomically precise. Setting an alarm to "45 minutes before sunrise" will track Fajr timing accurately throughout the year, including during Ramadan as sunrise times shift.
Does the alarm still go off if my phone is in Doze mode or Battery Saver?: Yes. Risetime uses Android's setAlarmClock API — the same system-level alarm mechanism used by your built-in clock app. It survives Doze mode, battery optimization, and device restarts.
Can I set an alarm for golden hour or blue hour?: Yes. Set an alarm to "30 minutes before sunset" for golden hour, or "20 minutes after sunset" for blue hour. Both shift automatically as sunset times change through the seasons — perfect for photographers who need to be on location at the right time.

Ready to rise with the sun?