Instant Wake Up - Alarm Clock 4+

Do wake-up mission sets

Jarig Duval

    • 4.4 • 275 Ratings
    • Free
    • Offers In-App Purchases



Trouble getting out of bed in the morning? You'll never snooze or oversleep with the Instant Wake Up alarm clock. Develop healthy sleeping habits and a great morning routine. Never fall back asleep again!

* Create sets of wake-up missions to turn off the alarm
* Wake up to ringtones, your favorite music, or both
* Loud ringtones or any text read aloud to you
* Procedural Ringtones¹ to counter auditory adaptation
* Bedtime Reminder helps you prevent sleep deprivation proactively

Completing wake-up missions shuts off the alarm and leaves you fully awake and alert. They stimulate the higher functions of your brain and they're fun too!

* Solve multiple-choice math puzzles
* Play a memory game
* Shake your phone
* Run to the bathroom to scan the barcode of your toothpaste.

* Preset the alarm volume and make it impossible to mute
* Lock the alarms to prevent yourself from cheating
* Randomize your missions and playlists so your brain won't get used to it
* Use Procedural Ringtones¹ to never sleep through any alarm again
* Sharing a room? The “Don't Wake my Spouse” button will help!

* Choose the clock display, color theme, and even the app icon
* Dark Mode to help you power down at night, but options for pleasantly bright alarms
* Morning Routine lets you set tasks to start your day the right way

Staying in control of your sleep routine is key to waking up feeling rested and healthy. Sleep deprivation can be dangerous to your health and the health of others. You should always focus on getting enough sleep first. That's why the Instant Wake Up alarm clock also includes Bedtime Reminders and Enforcers.

Let us know how you're enjoying the Instant Wake Up alarm clock, or give us your suggestions:

¹ Procedural Ringtones require iOS 13 or later

What’s New

Version 7.2.2

Say hello to INSTANT WAKE UP, the new name for SLEEP CRUSHER. The same powerful tool you trust, now with a name that better reflects our mission: to empower your morning, instantly.

For any queries or feedback, drop us a line at

Keep an eye out for more exciting updates on the horizon, and as always, start your day right with Instant Wake Up.

Ratings and Reviews

4.4 out of 5
275 Ratings

275 Ratings

Bradymt ,

Works great - except for when it doesn’t

9 out of 10 times, this application is truly brilliant and is one of the few (free) mobile solutions I’ve found that are able to get hard sleepers like myself to get up. The app itself is easy to use, feature-rich, and has an interface with a great balance between cleanliness and customizability. I like it so much that I decided to pay to get the ad-free version of the app.

However, I have had a couple of days where the application crashes in the middle of the night and is unable to work with any of my alarms, missions or not. Thank goodness I had set backup alarms in the stock iPhone Clock app and that these application failures were on days where I did not have work. That said, I am fearful to use this application as a standalone solution to “crushing” my sleep, so to say, given the fairly high risk for app failure and an interruption of the function of background mode for unknown reasons. So for now, I will have to resort to using it as more of an adjunct to the stock alarms until a future update (hopefully) reduces the frequency of crashes.

Limp*83 ,

This app is awful

I hate this app. I routinely delete it every morning and redownload it before I go to bed. I’m writing this review as it redownloads. I wake up at 3:30am everyday for work. The sound this app makes sends me into immediate panic and disparity. I forcefully hold the volume button down while also occupying the “the don’t wake my spouse” button out of shear terror the sound will go off again before I complete my math equations. I often forget I’m supposed to pay attention to the color patterns and stare into the abyss as the colors change wondering why, that’s all. Just “why” eventually I come too and am angry again. I’m not happy until I some how unlock my phone and get to the Home Screen to delete this app. The peace in the silence after I hit the delete app button is undeniable. I suppose for now, I will continue to delete and redownload. Deleting the app before the alarm goes off again is my only sense of success and after spending the first 10 minutes of my day in the most competitive and enraging competition of my life, I’m numb enough to start my day of work on time. Thank you.

Twist Kick ,

I hate this alarm - and that's why it works!

I absolutely loathe this alarm. The procedural noises mean I can't get used to the sound and so it can wake me up out of a dead sleep, the multiple 'games' to shut it off jar my groggy brain into a semi-wakeful state, and the forced advertisements make my blood boil, which shakes off pretty much any remaining sleepiness.

Which is why I rarely let it go off. I have this alarm set for 9:05, and my main alarm set for 9:00. When I hear my first alarm I am jolted awake because I know if I don't wake up I'll have to deal with the Sleep Crusher alarm - and that is ample motivation to get up! I'm not sure if I'm the only one who gets the most use out of this app by avoiding using it, but hey - it works! On the rare occasions when I do sleep through my first alarm the Sleep Crusher alarm is almost always there for me - it does have a tendency to crash once in a while, so I recommend having a backup alarm just in case, but on the whole it works incredibly well.

In-App Purchases

Ad Free
Ad Free
Removes all ads from the app.

App Privacy

The developer, Jarig Duval, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Used to Track You

The following data may be used to track you across apps and websites owned by other companies:

  • Location
  • Identifiers
  • Usage Data
  • Diagnostics

Data Linked to You

The following data may be collected and linked to your identity:

  • Location
  • Identifiers
  • Usage Data
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

More By This Developer

Mathe Alarm Clock - Math Alarm
Count That Now - Tally counter
Motion Alarm Clock
Barcode Alarm Clock
My Math Alarm Clock
Memory Alarm Clock

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