Sleep Tracker & Sounds App for iPhone

Sleep better. Wake refreshed.

InnerHour combines intelligent sleep tracking, a rich nature sounds library, guided meditations, and calming sleep stories — everything you need for deeper, more restful nights.

Download Free on App Store
4.7
App Store Rating
150+
Nature Sounds
50+
Sleep Stories
10M+
Nights Tracked

Everything you need for better sleep

Six powerful features working together to help you fall asleep faster, sleep deeper, and wake feeling genuinely rested.

Sleep Tracking

Automatic sleep stage detection using your iPhone's sensors. See your light, deep, and REM cycles each morning with detailed charts and trend analysis over weeks and months.

Nature Sounds Library

Over 150 high-quality nature sounds including rain, ocean waves, thunderstorms, forest ambience, crackling fire, and flowing rivers. Layer and mix sounds to build your perfect sleep environment.

Guided Meditations

Expert-crafted sleep meditations using body scan, progressive muscle relaxation, and mindfulness techniques. Sessions range from 5 to 45 minutes to fit any schedule.

Sleep Stories

Narrated bedtime stories designed for adults, with soothing voices and calming plotlines that gently guide your mind away from the day and into restful sleep.

Smart Alarm

Wake during your lightest sleep phase within a custom window. No more jarring alarms during deep sleep — just a gentle nudge when your body is naturally ready to rise.

Sleep Insights

Understand your sleep with weekly and monthly reports. Track sleep efficiency, time in bed vs. actual sleep, consistency scores, and personalized recommendations to improve your rest.

How InnerHour works

Three simple steps to your best sleep. No wearables required — just your iPhone and a desire for better rest.

1

Set your soundscape

Choose from 150+ nature sounds or select a guided meditation or sleep story. Set a sleep timer and let InnerHour create the perfect environment as you drift off.

2

Sleep naturally

Place your iPhone on the nightstand. InnerHour silently tracks your movement and sound patterns throughout the night, detecting sleep stages without any wearable device.

3

Wake informed

The smart alarm gently wakes you at the optimal moment. Review your sleep stages, duration, efficiency, and trends. Get actionable insights to continuously improve your rest.

How InnerHour compares

See why InnerHour is the most complete sleep app for iPhone — combining features that competitors split across multiple apps.

Feature InnerHour Sleep Cycle Pillow Calm
Sleep Tracking Yes Yes Yes No
Nature Sounds (150+) Yes Limited Limited Yes
Guided Meditations Yes No Limited Yes
Sleep Stories Yes No No Yes
Smart Alarm Yes Yes Yes No
Sound Mixing Yes No No Limited
White/Pink/Brown Noise Yes Limited Limited Limited
Free Download Yes Yes Yes Yes

What sleepers are saying

★★★★★

"I've tried Sleep Cycle, Pillow, and Calm separately. InnerHour does what all three do — and does it better. The rain + fireplace mix is my nightly ritual now."

Sarah M. — App Store Review
★★★★★

"The smart alarm is life-changing. I used to wake up groggy every day. Now I wake during light sleep and actually feel ready to start my morning. Can't go back."

James R. — App Store Review
★★★★★

"I've struggled with insomnia for years. The guided meditations and sleep stories in InnerHour are the only things that consistently help me fall asleep. Genuinely grateful."

Emily T. — App Store Review

Sleep better with science

In-depth guides backed by research to help you understand and improve your sleep.

The Complete Guide to Sleep Tracking in 2026

How sleep trackers work, what REM, deep, and light sleep stages mean, and how to use data to genuinely improve your rest.

Read the guide

Nature Sounds and Sleep: What Science Says

White noise vs. pink noise vs. brown noise, why rain sounds calm the brain, and how to choose the best sounds for your sleep.

Read the guide

How to Fall Asleep Fast: Evidence-Based Insomnia Tips

Proven techniques from CBT-I, sleep restriction therapy, and relaxation science to help you overcome insomnia and reclaim your nights.

Read the guide

Frequently asked questions

Everything you need to know about InnerHour and improving your sleep.

How does the InnerHour sleep tracker work?

InnerHour uses your iPhone's accelerometer and microphone to detect movement and sound patterns throughout the night. The app analyzes these signals to identify your sleep stages — light sleep, deep sleep, and REM — and presents detailed sleep insights each morning so you can understand and improve your rest over time.

What types of nature sounds does InnerHour offer?

InnerHour features a rich library of over 150 nature sounds including rain, ocean waves, thunderstorms, forest ambience, crackling fire, wind, birdsong, river streams, and more. You can also layer multiple sounds together to create a custom soundscape, and choose from white noise, pink noise, and brown noise for scientifically-backed sleep support.

Can InnerHour help with insomnia?

Yes. InnerHour combines guided meditations, breathing exercises, sleep stories, and soothing nature sounds — all evidence-based techniques for managing insomnia. The sleep tracker also helps you identify patterns and habits that may be contributing to poor sleep, so you can make informed changes to your routine.

How does the smart alarm work?

InnerHour's smart alarm monitors your sleep cycles and wakes you during your lightest sleep phase within a window you set — typically 15 to 30 minutes before your target wake time. Waking during light sleep helps you feel more alert and refreshed compared to being jolted awake during deep sleep.

Is InnerHour free to download?

Yes, InnerHour is free to download from the App Store. The app includes a generous selection of sounds, meditations, and tracking features at no cost. An optional subscription unlocks the full library of content including all nature soundscapes, premium sleep stories, advanced sleep analytics, and unlimited sound mixing.

Does InnerHour work without an Apple Watch?

Absolutely. InnerHour is designed to work beautifully with just your iPhone — no additional hardware required. Simply place your phone on your nightstand or mattress, and the app uses its built-in sensors to track your sleep. If you do have an Apple Watch, InnerHour can use its heart rate and motion data for even more detailed insights.

What makes InnerHour different from Sleep Cycle or Pillow?

InnerHour uniquely combines a full-featured sleep tracker with a comprehensive sounds library, guided meditations, and sleep stories in one app. While Sleep Cycle focuses primarily on tracking and Pillow emphasizes Apple Watch integration, InnerHour delivers an all-in-one sleep improvement experience — from falling asleep to waking up refreshed.

Can I use InnerHour sounds as a sleep timer?

Yes. Every sound and soundscape in InnerHour includes a customizable sleep timer. You can set sounds to fade out after 15 minutes, 30 minutes, 1 hour, or any custom duration. The timer uses a gentle fade-out so you are never startled awake when the audio stops.

Start sleeping better tonight

Join thousands of people who wake up feeling genuinely rested. Free to download, no account required.

Download Free on App Store

More from Arc Tools

Serenity

Sleep sounds & meditation

Be Alright

Daily affirmations

HeadAlly

Migraine relief tracker

Wombie

Baby sleep tracker