SleepViz: Sleep Recorder
Snore Tracker & Sleep Score
About
Transform your iPhone into a personal sleep lab. Record your sleep, detect snoring with audio clips, and view detailed sleep stages and vital signs. All your data stays private on your device, completely free.
What's New in SleepViz
1.1.19
June 12, 2026
Version increment and keywords update
FAQ
What is SleepViz?
SleepViz turns your iPhone into a sleep lab. It records your sleep, detects snoring with audio clips, and provides insights into your sleep stages and vital signs, all stored locally on your device.
Does SleepViz have ads?
No, SleepViz is completely free and does not contain any advertisements. It offers all features without any in-app purchases or subscriptions.
What devices does SleepViz support?
SleepViz is currently supported on iPhone devices. It leverages Apple Health and Apple Watch for comprehensive sleep and vital sign tracking.
How accurate is SleepViz's snore detection?
SleepViz detects snoring and provides timestamped audio clips, allowing users to review and assess the frequency and loudness of their snoring. It also analyzes sleep stages and vital signs from Apple Health.
Is my sleep data private with SleepViz?
Yes, SleepViz is designed with privacy in mind. Your audio recordings and health data never leave your iPhone. The app does not use servers, stream data, or sell user information.
How often is SleepViz updated?
The latest version of SleepViz is 1.1.19, last updated on June 12, 2026. Updates typically include improvements to features, bug fixes, and performance enhancements.
What are the sleep stages SleepViz tracks?
SleepViz pulls sleep stage data from Apple Health, including Deep, Core, REM, and Awake stages. It also tracks heart rate, blood oxygen (SpO2), and respiratory rate from your Apple Watch.
Can SleepViz be used offline?
Yes, SleepViz works fully offline and does not require WiFi. It is built for real nights, handling interruptions like phone calls and alarms automatically, and is crash-safe.
