Yes, but "free" covers a range. The iPhone's built-in Clock app is completely free and reliable, but you can stop it with a single tap while half-asleep. Mission alarms like Captain Wake and Alarmy are free to download with optional paid tiers, and they make you complete a task, such as scanning a barcode in another room, before the alarm stops. And if you'd rather not use an app at all, a cheap physical alarm clock placed across the room is still one of the most effective options.
The short answer
Which free option works depends on how you fail in the morning:
- You wake up to the alarm and get up. The free Clock app is enough. Tune the settings below and you're done.
- You turn the alarm off without really waking up. You need an alarm with a harder off switch. Mission alarms like Captain Wake and Alarmy do that, and both are free to download.
- You want no phone involvement at all. A physical alarm clock across the room is a one-time cost with no subscription.
What "free" usually means for alarm apps
Before downloading anything labelled free, it helps to know the common models:
- Truly free. Nothing to pay, ever. The Clock app is the main example.
- Free with a paid tier. The core app works for free; a subscription unlocks extra features. Most mission alarms work this way.
- Free trial. A paid tier you can try for a few days. Trials usually convert to a paid subscription automatically unless you cancel, which you can do in Settings > [your name] > Subscriptions.
- Ad-supported. Free, with ads shown in the app.
On any App Store page, look for "In-App Purchases" near the download button, and check the listing for what the free version includes. A free app that locks its alarm behind a paywall on day two isn't really free.
Option 1: The built-in Clock app
Cost: free, preinstalled.
The Clock app is the most reliable free alarm on your iPhone. Its alarms ring in silent mode and through Do Not Disturb and Focus, and they also sound in Airplane Mode and Low Power Mode. The one hard limit, shared with every app, is that an iPhone that's switched off or has a dead battery won't ring.
To make it as strong as possible:
- Raise the real alarm volume. Go to Settings > Sounds & Haptics and turn up Ringtone and Alert Volume. Clock alarms follow this, not your media volume. See why your iPhone alarm might be too quiet.
- Turn off Snooze in each alarm's edit screen. The classic iPhone snooze is 9 minutes; on iOS 26 and later you can also adjust its length from 1 to 15 minutes, but for heavy sleepers, off is better.
- Pick a harsh sound instead of a gentle one.
- Charge the phone across the room so you must stand up to reach Stop.
- Check Attention Aware Features on iPhones with Face ID (Settings > Face ID & Passcode > Attention Aware Features). When on, glancing at your phone can lower the alarm volume.
The weakness is simple: Stop is always one tap away. If you've ever found your alarm dismissed with no memory of doing it, no Clock setting will fix that.
Option 2: Captain Wake (free tier)
Cost: free to download with core features; Premium optional.
Captain Wake is an iPhone mission alarm (iOS 17 or later). The alarm stops only when you complete a mission: photographing a specific object like your bathroom sink (verified on your phone with Apple Vision, never uploaded), solving math at a difficulty you choose, scanning a barcode you've left in another room, or physical missions like Shake and Spin. It keeps ringing if you force-close the app, restart the phone, or turn the volume to zero.
The free version covers the core features. Premium unlocks all missions for around $29.99 a year after a 3-day free trial (regional pricing varies). You don't need Premium to find out whether a mission alarm works for you.
Not for: Android users, or anyone who wants an Apple Watch alarm; Captain Wake is iPhone-only.
Option 3: Alarmy (free with a paid tier)
Cost: free to download with a paid tier; check the App Store for current pricing.
Alarmy is the original mission alarm, and it's a strong option. It runs on both iPhone and Android and offers a wider range of missions, including steps and squats. If you're on Android, or want a specific mission type Captain Wake doesn't focus on, Alarmy is the right pick. For a fair comparison of the two, see the Alarmy alternative guide.
Option 4: A physical alarm clock across the room
Cost: a one-time purchase; no subscription.
It's not an app, but it's worth including. A loud, basic alarm clock on the far side of the bedroom forces you to get up to switch it off, doesn't depend on your phone's battery, and keeps the phone out of your hand first thing. The catch: once it's off, nothing stops you walking straight back to bed. It works best combined with a phone alarm a few minutes later.
Comparison table
| Option | Cost | How you stop it | Devices | Main catch |
|---|---|---|---|---|
| iPhone Clock app | Free | Tap Stop | Every iPhone | Easy to dismiss half-asleep |
| Captain Wake | Free; Premium optional (around $29.99/year after 3-day trial) | Complete a mission | iPhone, iOS 17+ | Full mission set needs Premium; no Android |
| Alarmy | Free; paid tier available | Complete a mission | iPhone and Android | Check which missions are free |
| Physical alarm clock | One-time purchase | Walk over and press a button | None needed | Easy to walk back to bed |
Which free option should you choose?
- You wake up fine: the Clock app, with Snooze off and the volume checked.
- You're on iPhone and dismiss alarms in your sleep: Captain Wake, starting on the free version; a mission that takes you to another room, like a barcode or a photo of your sink, is the strongest setup.
- You're on Android, or want the broadest mission range: Alarmy.
- You want no screens at bedtime: a physical alarm clock across the room, plus a phone backup.
If none of these works and you regularly sleep through everything, the problem may not be the alarm. Our guide for people who feel nothing wakes them up covers the next steps, including when it's worth talking to a doctor.
