Alarmy earned its reputation: it popularised the idea that an alarm should make you do something before it stops, and for a lot of heavy sleepers that was the first thing that ever worked. So why do people go looking for a replacement? Reading the reviews and our own support inbox, the same handful of reasons keep coming up — and they are worth naming, because the right alternative depends on which one is yours.
Full disclosure up front: we build MathWake, which is on this list. We have tried to be as concrete about its limits as about everyone else's, and the comparison table is built on things you can verify in two minutes on your own phone.
Why people leave Alarmy
- It grew into a suite. Sleep sounds, a morning feed, horoscopes, a news tab. Users who wanted an alarm clock now navigate a lifestyle app to get to it.
- The pricing. Most missions and the ad-free experience sit behind a subscription, and the free tier has become thinner over time. Pricing changes; check the current App Store listing rather than trusting any article's number, including this one.
- Ads in the free version — including, at times, on the ring screen, which is a peculiar place to be sold something.
- Reliability doubts. Any third-party alarm on iOS lives under the same constraint: if the app is killed or the phone is on silent, a plain notification-based alarm turns into a banner. Reviews of every app in this category contain "it didn't ring". What differs is how many independent layers each app stacks against that.
What actually matters in an alarm app
Before the list, the four questions that separate an alarm you trust from one you hope for. They are the columns of the table below.
- Does it force you awake? A mission that requires thought — arithmetic, typing, a memory grid, a photo of a specific object — cannot be dismissed by the half-asleep reflex that silences a normal alarm. The type of mission matters less than whether it engages your prefrontal cortex.
- Does it ring on silent mode, at full volume? The built-in Clock does. Third-party apps only do if they run their own audio engine, and even then the volume is whatever the app decides to force.
- Does it ring if the app was killed overnight? Swiped away, reclaimed by the system, or after a reboot. This is where the category splits into "notification with a sound" and "real alarm". On iOS 26, Apple's AlarmKit lets apps register a system-level alarm that fires regardless — but only apps that adopted it get that.
- What does it cost to get the missions? Not the headline price — the price of the features you actually need for a heavy sleeper.
1. MathWake — for the mission alarm without the suite
MathWake is the narrowest app on this list on purpose: it is an alarm that will not stop until you have completed a wake-up mission, plus a free sleep tracker, and nothing else. Eight dismissal missions — math at three difficulties, missing-operator puzzles, typing a phrase, a colour-memory grid, shake, a camera object hunt (scan your toothpaste, a plant, the coffee machine), barcode scanning, and plain STOP for the mornings you do not need it.
On the reliability question it stacks three independent layers: its own audio engine that plays through the speaker at full volume on silent mode; a chain of backup notifications with custom 30-second sounds that keeps going if the app has been killed; and on iOS 26, an AlarmKit system alarm registered at the exact time, which rings even when the app is not running and hands you straight into the mission when you tap it. Any one failing still leaves two.
Where it falls short: iPhone only — there is no Android version. The strongest missions (math, colour tiles, shake, camera) are premium; the free tier keeps typing and missing-symbol missions plus the sleep tracker. And it will not play you rain sounds or read you the news, which is the point but may not be yours.
2. Sleep Cycle — for waking at the right moment, not the loud one
Sleep Cycle takes the opposite approach: instead of dragging you out of deep sleep with force, it listens (via microphone or accelerometer) and rings within a window before your set time, at the moment you are already in light sleep. For people whose problem is grogginess rather than not waking, this is the better idea. Its sleep analysis is mature and its snore detection is genuinely useful.
Where it falls short: a smart window is a gentle alarm by design. It has no missions in the Alarmy sense, so a determined heavy sleeper dismisses it exactly as easily as the built-in Clock. Most analysis lives behind the subscription.
3. Rise — for fixing the schedule that causes the problem
Rise is less an alarm than a sleep-debt and circadian tracker with an alarm attached. It estimates your sleep debt from phone usage, shows your energy peaks and dips through the day, and nudges your bedtime. If you keep sleeping through alarms because you are chronically under-slept — which is the single most common cause, as we argued in why you sleep through your alarm — Rise attacks the root.
Where it falls short: the alarm itself is ordinary, and the app is a subscription aimed at people who want a coach, not a siren.
4. I Can't Wake Up! — for the maximum number of hoops
An old-school entry that has been around since long before subscriptions were the norm. Its whole personality is wake-up tasks: math, memory, order, repeat, rewrite, a barcode scan, and the option to chain several together so the alarm runs you through a gauntlet. If Alarmy's missions were the only thing you liked about it, this is the closest spiritual sibling.
Where it falls short: the interface has aged, and like every app in this category it depends on iOS keeping it alive — check how it behaves on silent mode and after a force-quit before you trust it with a flight.
5. The built-in Clock + Sleep Focus — for the sceptic
Apple's own alarm deserves a fair hearing. It ignores the silent switch and Focus modes, it fires after a reboot, it plays through the speaker even with headphones connected, and it costs nothing. The Sleep schedule in the Health app adds a wind-down and a gentler wake-up sound. For a light sleeper who simply wants reliability, it wins.
Where it falls short: one tap on the lock screen and it is gone. There is no mission, no distance requirement, nothing between a half-asleep hand and silence — which is the entire reason the mission-alarm category exists. It also has a few quiet ways of failing that catch people out; we listed them in iPhone alarm didn't go off? 9 causes.
Side by side
| App | Missions | Rings on silent | Rings if killed | Best for |
|---|---|---|---|---|
| MathWake | 8 (math, typing, memory, shake, camera…) | Yes, full volume | Yes — backup chain + AlarmKit on iOS 26 | Heavy sleepers who want only an alarm |
| Alarmy | Many | Yes | Partial — depends on version and settings | People who want the full suite |
| Sleep Cycle | None | Yes | Partial | Grogginess, not oversleeping |
| Rise | None | Yes | Partial | Fixing sleep debt long-term |
| I Can't Wake Up! | Many, chainable | Yes | Partial | Maximum friction |
| Apple Clock | None | Yes | Yes | Light sleepers |
"Partial" means the app relies on iOS keeping it alive or on a notification-based fallback. Behaviour changes between versions — run the two-minute test (set an alarm, silent switch on, force-quit the app, wait) on your own phone before relying on any of them.
How to choose in one minute
- You sleep through alarms or silence them without waking → a mission alarm: MathWake or I Can't Wake Up!
- You wake up but feel wrecked → Sleep Cycle, or fix your bedtime with the sleep calculator.
- You are chronically short on sleep and know it → Rise, and go to bed earlier.
- You just want something that always rings and can resist one tap → the built-in Clock.
The alarm, without the suite
MathWake is a loud alarm clock that rings even on silent mode, keeps ringing if the app is killed, and won't stop until you complete a wake-up mission. Sleep tracking included, free.
Download MathWake for iPhoneFrequently asked questions
Is there a free alternative to Alarmy?
Apple's built-in Clock is free and extremely reliable, but has no missions. Among mission alarms, MathWake's free tier includes the typing and missing-symbol missions and the sleep tracker; the harder missions are premium. Every app in this category gates something, so compare the free tiers on the mission you would actually use.
Which alarm app is loudest on iPhone?
Any app with its own audio engine can force the system volume to maximum while it rings, so "loudest" is mostly a tie between the apps that do that — MathWake and Alarmy both do. The difference is what happens when the app is not running, which is where backup notifications and AlarmKit come in.
Do mission alarms work if the app is closed?
Only if the app has a layer that does not depend on the app running: a chain of notifications with custom sounds, or on iOS 26 a system AlarmKit alarm. Otherwise a force-quit turns a mission alarm into a silent banner. Test it once on your own phone.
Is MathWake available on Android?
No — it is iPhone only. Alarmy and Sleep Cycle are available on both platforms.