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Rellax vs CircadiaOS

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Rellax compared with CircadiaOS
DetailRellax logo RellaxCircadiaOS logo CircadiaOS
What it doesTinnitus Retraining Therapy treatment app designed to reduce the perception of ringing in the ears The thermostat schedule that learns from your sleep
StageNot given Not given
FoundedNot given Not given
Based inUS US
Pricing modelNot given Freemium
PricingGet your first month of Premium Free Free: starting temperature schedule, optional wearable connection, nightly sleep data and trends, no thermostat control. Premium (monthly): $12.99/month with automatic thermostat control, four-phase schedule, 14-night starting period, one-variable-at-a-time adjustment from wearable data, 14-day free
Key features
  • Clinic portal for patient management
  • Integrated assessments including TFI, THI, and TRQ
  • Engagement and usage statistics monitoring
  • Daily session streaks and milestone badges
  • HRV and sleep tracking
  • Personalized sound therapy
  • Assessment results and engagement data access
  • Subscription management for patient access
  • Four-phase overnight temperature schedule (pre-sleep, early night, late night, pre-wake)
  • One-variable-at-a-time personalization held for 7 to 14 nights per change
  • Wearable integration: Apple Watch, Oura Ring, Whoop, Garmin, Fitbit
  • Thermostat compatibility with Nest, ecobee, Honeywell Home and 20+ brands
  • 14-night starting period and reference point on Premium
  • User-set temperature floor and ceiling, never below 63°F
  • Why This Curve display showing where each setpoint came from and data behind it
  • Best vs Worst nights comparison showing highest and lowest scoring nights
  • Manual override capability with automatic resumption next night
  • Referral program earning free months of Premium for every three friends who join
What makes it different
  • Designed specifically for clinic workflows and provider-patient coordination
  • Complements existing treatment plans without disrupting clinical workflow
  • Built by audiologists with real clinical experience
  • Structured patient engagement with daily sessions and progress visibility
  • No new hardware required—works with your existing smart thermostat and wearable
  • Software-first approach running sleep algorithms on your thermostat rather than requiring specialized cooling beds
  • Personalization through one-change-at-a-time adjustments graded against your own sleep data
  • Complete transparency showing where every setpoint comes from and how much data supports it
Community votes00
DR (Domain Rating by Ahrefs)20 +1 (up) since last check13 no change since last check
Trust Flow (Majestic)114
Citation Flow (Majestic)824
Referring domains (Majestic)647

5 details filled in for both companies.

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