Sleep Cycle review

Sleep Cycle has been tracking sleep from the nightstand since 2009, and it remains the most complete phone-only tracker on this list. Place the phone next to the bed and it records the night with sound analysis or the accelerometer, then shows sleep stages, a sleep score and a goal. It flags snoring, coughing and sleep talking, and the Smart Alarm picks your lightest phase within a wake-up window so mornings are less abrupt. Sleep notes let you tag nights with caffeine, stress or exercise and see the pattern over months. Newer additions include Luma, an AI sleep coach, and SleepGPT for questions about your data. Premium adds sleep stories, soundscapes, data export, Philips Hue sunrise lighting and Apple Health sync. The website advertises a 30-day free trial; the US App Store shows several Premium prices without saying which is monthly or yearly, so we left the price pending.

Who it is for

people who want detailed tracking without buying a wearable

Price

See vendor pricing (USD check pending); free download with a Premium upgrade and a 30-day free trial advertised on sleepcycle.com.

US price check pending. See the vendor pricing page.

Key features

• Tracks every night with patented sound technology or accelerometer-based detection, no wearable needed
• Smart Alarm wakes you during your lightest sleep phase
• Detects snoring, coughing and sleep talking
• AI sleep coach Luma and SleepGPT give guidance based on your tracked nights
• Sleep notes show how caffeine, stress or exercise relate to your sleep

Strengths and weaknesses

• Strength: Works with just a phone on the nightstand, plus Apple Watch support
• Strength: Long-term trends and comparison against global benchmarks
• Strength: Premium adds data export, Philips Hue sunrise and Apple Health sync
• Weakness: The App Store lists many Premium price points without plan labels, so check the price in the app
• Weakness: Sleep stories and soundscapes are Premium tools
• Weakness: Most advanced analysis and audio content sit behind Premium

Key facts

• Tracking method: Sound analysis or accelerometer
• Downloads: More than 40 million, per the App Store listing
• Platforms: iPhone, iPad, Apple Watch, Android
• Trial: 30 days, as advertised on sleepcycle.com

Where it ranks

Sleep Cycle is No. 1 in our Best Sleep Apps verdict.