Mewna - AI Sleep Companion

iOS Universel / Forme et santé

Sleep better, starting with understanding tonight.

Mewna is a tiny moon-cat who watches over you while you sleep. Place your iPhone by your pillow, or wear your Apple Watch — we'll quietly read your night and tell you what happened, in human words.

Not another cold sleep tracker. A companion who understands the science and speaks gently.

WHY MEWNA

• Academic algorithm, plain-language results
Cole-Kripke (1992) actigraphy — ~89% PSG agreement in adults. NIH / Sleep Foundation sleep-quality framework. The complex science, translated into what you actually need to know tonight.

• Multi-source fusion
Apple Watch heart rate, HRV, and sleep stages, plus iPhone micro-motion detection — combined, more accurate than either alone.

• Story-ready in the morning
Sleep score · total sleep · how long to fall asleep · times you woke up · deep recovery · REM · resting HR · HRV — and a personal narrative for the night, not just numbers.

• Calendar heatmap, trends visible
See at a glance which nights flowed and which were rough. 7 / 30 / 90-day trends help you find your rhythm again, slowly.

• Pre-sleep tags
A drink? A workout? Stressful day? A two-second tag lets the AI connect cause and effect for you.

• Auto iCloud backup, no sign-up
Your data is yours. All analysis happens on-device. Switch phones — your records follow.

PRIVACY FIRST

• No servers, no accounts, no ads, no trackers
• Motion + health data analyzed entirely on your iPhone
• iCloud sync uses Apple's private CloudKit container — even we cannot see it
• Erase everything anytime in Settings

18 LANGUAGES

繁體中文 · 简体中文 · English · 日本語 · 한국어 · Español · Français · Deutsch · Italiano · Português · Русский · Nederlands · Türkçe · العربية · हिन्दी · ภาษาไทย · Tiếng Việt · Bahasa Indonesia. Switch anytime in-app.

MADE FOR

• Anyone with restless or fluctuating sleep
• People who want to understand their body
• Apple Watch users who don't want yet another wearable
• Those who prefer warmth over cold dashboards

REFERENCES

Cole RJ et al., Sleep 1992;15:461-9 · Sadeh A et al., Sleep 1994;17:201-7 · Watson NF et al., Sleep 2015;38:843-4 · de Zambotti M et al., Sleep Med Clin 2020 · Hirshkowitz M et al., Sleep Health 2015.

Mewna is not a medical device. Persistent sleep problems? Talk to your doctor.

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Privacy Policy: https://gckenny.github.io/mewna/privacy.html
Terms of Use: https://gckenny.github.io/mewna/terms.html