Body Battery vs Sauna Tracker & Session Log

Meet Body Battery — the simple way to understand your daily energy, stress and sleep in one place. We translate your HRV, heart rate and sleep data from Apple Health into clear scores, 7-day trends and practical guidance so you can train smarter, recover better, and feel your best. What you’ll get Body Battery: a daily energy level you can actually act on Readiness & Recovery: see how prepared you are for the day Stress Level: spot highs/lows and patterns across the week Sleep Tracking: duration, timing and consistency insights 7-Day Sparklines: quick mini-charts for Recovery, Battery, Stress, Sleep Clean, fast UI: built for focus—no clutter, just the signals that matter How it works Connect to Apple Health We read HRV, heart rate and sleep metrics you approve Check your daily Body Battery and follow 7-day trends Use insights to plan training, rest and routines Privacy & Control You decide what to share. Body Battery only reads the Apple Health data you allow, and you can change permissions at any time. Requirements Works with data from Apple Health. For best results, wear Apple Watch during day and sleep to capture HRV, heart rate and sleep. Disclaimer Body Battery provides wellness insights and is not a medical device. It does not diagnose or treat health conditions. Privacy policy: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Terms of use: https://backoffice.nicolaeusebi.com/Legal/PrivacyBody

PREMIUM — PURCHASE REQUIRED: All features described below are part of Pro and require a purchase: a weekly or yearly auto-renewing subscription, or a one-time lifetime purchase. WHAT YOU GET Track every sauna and temperature contrast therapy session. Record temperature in Celsius, duration in minutes, rounds, cooldown time, a perceived benefit rating from 1 to 5, and notes. Six session types: Sauna, infrared, steam room, cold plunge, ice bath, contrast therapy. Guided session timer: Protocols with guided heat → cold → rest phases. Six preset programs from beginner sauna to advanced athlete. PERFECT FOR Anyone building a sauna habit or tracking temperature contrast therapy. Whether you are starting out or optimizing performance, see your sessions accumulate over time. WHAT YOU'LL SEE Session history list (7-day view). Heat-minute trend chart. Session-type breakdown. Perceived benefit trend. Patterns by day of week. Session streak by day. Health insights cited from research (Hussain & Cohen 2018, Cleveland Clinic). Safety guidelines are built into every session. PRIVATE BY DEFAULT All data stored locally via SwiftData. Your privacy stays yours—no cloud sync, no account to create, no tracking. PREMIUM (PURCHASE REQUIRED) SaunaLog Premium unlocks complete session tracking with guided timer, insights, statistics, and subscription levels: Weekly, Yearly, or Lifetime purchase. Terms of Use: https://leanstudio.asia/terms-of-use Privacy Policy: https://leanstudio.asia/privacy-policy Support: support@leanstudio.asia