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Updated June 2026

The Best Free Sleep Tracker Apps

We compared the free tiers of the most popular sleep apps. The honest finding: most "free" sleep apps track sleep duration for free and gate the useful features — snore detection, sleep stages, trends — behind a subscription.

Below: which apps put the genuinely useful features on the free tier, ranked, with what's free and what's the catch in each.

Short answer: on iPhone, Snollo has the strongest free tier — snore detection, Apple Watch sleep stages, and audio playback are all free with no time limit. Sleep Cycle is the best free smart alarm, and Sleep as Android is the best free option on Android. The deciding factor isn't whether an app is "free" — it's which features are free.

The free sleep apps, ranked

  1. 1

    Snollo

    iPhone (iOS 17+)

    Best free tier overall — snore detection, sleep stages, and audio playback with nothing gated

    Free tier: Full sleep tracking, snore detection, Apple Watch sleep stages, audio clip playback, Apple Health sync — all free, no time limit.

    The catch: iPhone only, and the extended sound library + deep stats are Premium.

    See the full free tier →
  2. 2

    Sleep Cycle

    iPhone + Android

    Best smart alarm — wakes you in your lightest sleep phase

    Free tier: Microphone-based sleep analysis and the smart alarm work on the free/freemium tier.

    The catch: Snore recording, trends, and most analysis sit behind the subscription (~$39.99/yr).

  3. 3

    Sleep as Android

    Android only

    Best for Android power users — sleep talk recording and anti-oversleep CAPTCHAs

    Free tier: Tracks cycles, records snoring/sleep talk, smart alarm — generous 2-week trial.

    The catch: Android only; reverts to limited features after the trial unless you buy.

  4. 4

    SnoreLab

    iPhone + Android

    Best for benchmarking snoring against a large dataset

    Free tier: Records and scores your snoring; free tier limited to roughly one night per week.

    The catch: Audio is processed on SnoreLab's servers; full history needs Premium (~$3.99/mo).

  5. 5

    Pillow

    iPhone + Apple Watch

    Best Apple Watch integration with a clean interface

    Free tier: Basic sleep-stage tracking and a sleep score on the free tier.

    The catch: Snore detection, audio, and trends are Premium-only (~$4.99/mo).

  6. 6

    Sleep Monitor

    iPhone + Android

    Best simple, popular all-rounder

    Free tier: Records nighttime sounds and gives a consistency score on the free tier.

    The catch: Shows ads; deeper reports and the full sound history are paywalled.

  7. 7

    ShutEye

    iPhone + Android

    Best sleep-sounds library if you want audio content

    Free tier: Limited tracking plus a teaser of the sounds library.

    The catch: Most tracking and analysis is trial-then-subscription (~$59.99/yr).

What's actually free in each app

The features people actually want from a sleep tracker — and whether each app puts them on the free tier.

Free sleep tracker app comparison
App Platform Snore detection Sleep stages Audio playback Ads
Snollo ★ iPhone Free Free Free None
Sleep Cycle iPhone + Android Premium Premium Premium Yes
Sleep as Android Android Trial Trial Trial Yes
SnoreLab iPhone + Android Free (limited) Not supported Free (limited) Yes
Pillow iPhone Premium Free Premium None
Sleep Monitor iPhone + Android Free (limited) Free Premium Yes
ShutEye iPhone + Android Trial Trial Trial Yes

Based on publicly available App Store and Google Play listings as of June 2026. Subscription prices vary by region.

How we ranked these

We weighted one thing above all: how much of the genuinely useful functionality is actually free, with no trial countdown. A sleep app that only shows time-in-bed for free isn't really a free sleep tracker — it's a free clock.

After that we looked at accuracy without a wearable (most people don't sleep in a watch), privacy of overnight audio, the presence of ads, and whether the free tier is permanent or a disguised trial. Platform availability is noted but not penalised — the best free option genuinely differs between iPhone and Android.

Full disclosure: Snollo publishes this comparison. We've tried to keep it factual and to name each competitor's real strengths — Sleep Cycle's smart alarm and Sleep as Android's feature depth are genuinely class-leading. Verify current details on each app's store listing before deciding.

Our pick for iPhone: Snollo

Snore detection, Apple Watch sleep stages, and audio playback — all on the free tier, no time limit, no ads. Audio is classified on your iPhone and stored in your own iCloud. Uses the Apple ID you already have.

Download Snollo Free

iPhone · iOS 17+ · Apple Watch optional · No ads

Related

Free

Free sleep tracker

What's on the free tier in detail — and how it stays free.

Snoring

Best snore detection apps for iPhone

The same neutral comparison, focused on snoring trackers.

No watch

iPhone-only sleep tracker

Track sleep with just your iPhone — no Apple Watch needed.

From the Snollo blog

Guide

Do Free Sleep Tracker Apps Actually Work? What the Free Tier Really Gets You

Free sleep apps can track real sleep data without a wearable — but only if the app puts the useful features on the free tier. Here's what actually works for free, and what's quietly paywalled.

Guide

Snollo vs Sleep Cycle: Which Sleep App Should You Use in 2026?

Snollo vs Sleep Cycle on privacy, features, pricing, and Apple Watch support. Sleep Cycle is the most downloaded. Snollo is the most private.

Guide

What Does Your Sleep Score Actually Mean?

A sleep score sums up one night — how long you slept, how it split across stages, and how often it broke — into a single number. Here's how to read yours.

Free Sleep Tracker Apps — FAQ

What is the best free sleep tracker app?
For iPhone, Snollo has the strongest free tier — snore detection, Apple Watch sleep stages, and audio playback are all free with no time limit. Sleep Cycle is the best free smart alarm, and Sleep as Android is the best free option on Android. The key question with any 'free' sleep app is which features are actually free: many gate snore detection and trends behind a subscription, so the free version only tracks sleep duration.
Are free sleep tracker apps any good?
Yes — modern phone microphones and motion sensors are accurate enough to detect sleep cycles, snoring, and disturbances without a wearable. The limitation is rarely the technology; it's how much of it the app puts on the free tier. A free app that includes snore detection and sleep stages (like Snollo) gives you most of what a paid app does. A free app that only shows time-in-bed is functionally a clock.
Which free sleep tracker works without an Apple Watch or wearable?
Snollo, Sleep Cycle, SnoreLab, and Sleep Monitor all track sleep using just your phone's microphone and motion sensors — no watch or band required. Snollo additionally adds Apple Watch sleep stages if you own a watch, but its snore detection and sound timeline work iPhone-only.
How do free sleep apps make money?
Three common ways: ads, selling data, or upselling a subscription. For a sleep app this matters more than most categories, because the 'data' is overnight audio from your bedroom. Snollo's free tier avoids both ads and data sales — audio is classified on your iPhone and never uploaded, and it's funded purely by optional Premium upgrades. Always check an app's App Store privacy label before granting microphone access overnight.
Is a free sleep tracker accurate enough to be useful?
For consumer purposes, yes. Phone-based trackers won't match a clinical sleep study, but they reliably surface trends — how long you slept, when you were restless, how often and how loudly you snored, and whether changes (alcohol, position, bedtime) move those numbers. That trend data is what actually helps you improve sleep, and it's available on good free tiers.