Tawen — On-Device Daily Readiness Score
Tawen is an on-device Android app that computes a daily readiness score from health data already stored in Health Connect by your phone and wearable. The score, a single number from 0 to 100, is derived from five weighted physiological signals: sleep (35%), cardiovascular HRV and resting heart rate (25%), activity (25%), overnight SpO₂ (10%), and skin temperature (5%). The scoring engine is deterministic and transparent, re-weighting when data is missing without inventing values, and it runs entirely locally to preserve privacy. The app operates quietly in the background, updating your score hourly as new data arrives. It presents the readiness score as a persistent status bar chip on Android 16+, a home-screen widget, and a one-screen dashboard with a full breakdown of contributing signals. On devices with Google's Gemini Nano, an on-device AI model generates a plain-English explanation of your score and daily trends; otherwise, a rule-based explanation is provided. No health data is ever sent off the phone. Tawen requires zero manual logging—it reads from sensors and wearables you already use—and it is purchased once for $4.99, with no subscription or recurring fees. It is compatible with Android 9+ devices that support Health Connect. The app is designed as a general wellness tool, not a medical device, and it does not replace professional healthcare advice.
- Category
- Model Serving
- Pricing
- Free
Problem solved
Tawen addresses the common frustration with health tracking apps that demand expensive subscriptions, require constant manual logging, or upload sensitive health data to the cloud. It offers a fully automated, private, one-time-purchase readiness score using data you already collect, making daily recovery assessment simple and sustainable.
Use cases
- Decide whether to do an intense workout or take a rest day based on recovery
- Glance at readiness score from the Android status bar without opening the app
- Monitor overtraining risk by tracking physiological metrics over time
- Receive AI-generated plain-English explanations of daily readiness
- Replace subscription-based recovery tracking services with a one-time payment
- Leverage existing wearable data without additional manual logging
- Track wellness trends via the home screen widget
Audience
- Hobbyists
Pros
- All health data processed on-device; never leaves the phone
- One-time purchase of $4.99 with no subscription
- Requires no manual logging; uses existing wearable data
- Provides a clear readiness score from five weighted physiological signals
- On-device AI (Gemini Nano) explains score in plain English where supported
Cons
- Available only on Android (requires Health Connect)
- Requires a compatible device that records necessary health metrics
- Not a medical device; intended for general wellness only
- AI explanations limited to devices with Gemini Nano; others get rule-based
- Score accuracy depends on quality and completeness of Health Connect data
Official website: https://tawen.app/
Canonical LambdaBase page: https://www.lambdabase.com/tools/tawen-on-device-daily-readiness-score