Head to head
Calm vs Pzizz
One of these apps hands you a catalogue and lets you choose. The other builds a session on the spot and never quite repeats itself. That difference matters more than any feature list either of them prints.
In short
If you nap, or if hearing the same recording twice ruins it for you, Pzizz is the better buy. If you want big-name narrators and a library that carries you through the daytime too, Calm is the deeper product.
Pzizz is the one to beat on naps
The nap module is the best-designed thing of its kind, and it is the main reason to choose Pzizz over anything else in this category. A nap needs a different shape from a night: shorter, tighter, and it has to leave you functional rather than groggy. Pzizz is the app that took that seriously.
The other half of its argument is that a session is assembled rather than played. Music, voiceover and effects get put together differently each time, so it does not wear out the way a recording you have heard forty times does.
Calm is buying you production value
What Calm has that Pzizz does not is a catalogue in a class of its own: recognisable narrators, licensed music and a volume of material that is genuinely hard for a small team to match. If you like the ritual of choosing something, that is the app.
It also stretches past bedtime into anxiety and focus, so it is doing more jobs for the same subscription.
Ask yourself whether you want words or want silence
Both apps put a voice in your ear, but for different reasons. Calm gives you a story so your mind has somewhere to go. Pzizz gives you voiceover threaded through the audio for minds that need something to hold onto rather than something to follow.
If neither of those sounds right, and what you actually want is sound with no one talking, both are the wrong shape. That is a real preference and it is worth naming before you subscribe to either.
Sound that never loops, without anyone narrating
If the appeal of Pzizz is audio that never repeats, but the voiceover is exactly what keeps you awake, that combination exists elsewhere. Tock's fall-asleep sounds are generated on the device sample by sample, so nothing loops and there is nothing to download, and no one talks over them. You can layer four at once and save the result as a mix.
The tradeoff is scope. Tock is an alarm and sleep tracker that happens to have a sound library, not a relaxation catalogue, and it has no nap mode. iPhone only, 3-day trial, then from $39.99 a year.
| What we compared | Calm | Pzizz |
|---|---|---|
| Naps | Not its speciality | Its best-designed module (stronger here) |
| Hearing the same thing twice | Fixed recordings | Assembled fresh each session (stronger here) |
| Voices you already know | Named narrators, licensed music (stronger here) | Voiceover, not celebrity |
| Size of the catalogue | Very large (stronger here) | Narrower on purpose |
| Daytime anxiety and focus | Covered in the same app (stronger here) | Sleep and naps |
| Words to hold onto | A story to follow | Voiceover over the music (stronger here) |
| Tracking or an alarm | No alarm, no tracking (about the same) | No alarm, no tracking (about the same) |
Which one to actually install
Pick Calm if
Choose Calm for the library. Named voices, licensed music, enough material to last years, and it works during the day as well as at night.
Pick Pzizz if
Choose Pzizz if you nap, or if the thing that kills a sleep recording for you is having heard it before. Its sessions are built fresh and its nap module has no real rival.
Questions people ask
Is Pzizz really different every time?
That is its design. Music, voiceover and effects are assembled into a session rather than played back from a fixed file, so two sessions are not the same.
Can I turn the voice off?
Pzizz offers the voiceover as an option, which is part of its pitch for people whose minds need words. Calm is narration-led by nature, so if you want no voice at all, look at its music and soundscapes rather than its stories.
Do either of them wake me up in the morning?
No. Both are audio apps. They help you get to sleep and neither one tracks the night or rings at the end of it.
Where Tock sits against each of them
These pages are written the same way as this one, which means they state what Calm and Pzizz each do better than we do.
Related matchups
Other pairings involving one of these two.
- Calm vs Headspace SleepIf you want to be told a story by a voice you recognise, Calm has the deeper and better-produced library. If you want to be taught a wind-down and nudged to keep at it, Headspace's course structure does more for you.
- Calm vs Sleep CycleIf the problem is lying awake with a busy head, Calm. If the problem is groggy mornings and having no idea what your nights look like, Sleep Cycle. Most people searching this have already decided which; they just have not said it out loud.
- Headspace Sleep vs PzizzIf you nap in the afternoon, or you get bored hearing the same track night after night, Pzizz. If you want to be taught how to wind down and to still be doing it in three months, Headspace Sleep.
Elsewhere on the site
A different corner of the same problem.
- Wake tonesBeaconBeacon is a wake tone in Tock: an evenly spaced two-note pulse that your ear identifies as an alarm almost immediately. Tock's alarms are built on Apple's AlarmKit, so Beacon rings on the native full-screen alert even when the phone is on silent, sitting in a Focus, or the app hasn't been opened since last night.
- FeaturesSleep soundsTock has 63 fall-asleep sounds. You can play four at a time, save the blend as a mix, and 42 of them carry a Far, Near or Close distance control. 22 are bundled recordings and the rest are generated on the phone as you listen, so they never loop.
- Sleep soundsGentle windWind is broadband noise shaped by whatever it is moving past, drifting slowly up and down in level with no rhythm your ear can lock onto, which makes it unusually easy to stop noticing. It masks gently rather than firmly, so it belongs in a wind-down more than it belongs in a fight with a busy street.
- Tock for youSnorersSomeone has told you that you snore, or you have woken yourself up doing it, and you have no idea how loud it really is or whether it is the kind of thing that matters.
- AlternativesTock vs AlarmyIf all you need is a harder alarm, Alarmy has more dismissal tasks than Tock and a free tier, so it is the sensible pick. Tock is worth paying for when you want the night tracked and the ring moved earlier into light sleep, with a mission still standing between you and the off button.
- RoundupsThe best alarm clock apps for iPhoneFor most iPhone owners the best alarm clock app is the one already installed. The Clock app is free, reliable and enough. Tock is the upgrade worth paying for once the Clock app stops working, which usually means you dismiss it without remembering or you wake up feeling wrecked every morning.
If neither of them is quite the alarm you wanted
Tock is built on Apple AlarmKit, so it rings on silent and through a Focus, moves earlier when it finds a lighter moment, and keeps ringing until you solve something.