ABC GymSales Guest Waiver vs CircadiaOS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ABC GymSales Guest Waiver
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This app is for use with the ABC GymSales software product. The app is custom branded to your business. Easily capture lead information and sign guest waivers.
CircadiaOS
This app learns your body's ideal sleep temperature and automatically adjusts your smart thermostat throughout the night. It uses data from your wearable to personalize a four-phase temperature schedule for optimal sleep recovery. Requires a compatible smart thermostat and sleep-tracking wearable.
- Learns ideal sleep temperature
- Personalized four-phase temperature schedule
- Integrates with smart thermostats
- Syncs with sleep-tracking wearables
- Analyzes sleep quality
- Two-week calibration period
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CircadiaOS adjusts your bedroom temperature through the night, automatically. Your body temperature isn't constant while you sleep. It drops as you fall asleep, stays low through your deepest sleep, and rises again before you wake. A thermostat held at one number all night works against that. CircadiaOS builds a temperature curve for your night and drives your smart thermostat to follow it. Connect a wearable and the curve adapts to your own recorded nights instead of a general model. HOW IT WORKS - Connect your thermostat and your wearable - CircadiaOS builds a curve from your profile on night one - As your nights accumulate, the curve shifts to your own data - See exactly which parts come from your sleep and which are still estimates WHAT YOU SEE - Tonight's schedule, phase by phase - Why each setpoint is what it is - Your best and worst nights, side by side, and what differed Requires a compatible smart thermostat. A wearable is optional but unlocks personalization from your own sleep data. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: ABC GymSales Guest Waiver at none against CircadiaOS's 4. ABC GymSales Guest Waiver also leads on iOS requirement (12.0 vs 18.0). CircadiaOS's advantage is update cadence (every 3 days vs every 16 months). On price, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. CircadiaOS sells 4 in-app purchases, starting at $9.99 per month. ABC GymSales Guest Waiver asks for nothing beyond the download.
ABC GymSales Guest Waiver ships an update every 16 months, CircadiaOS every 3 days. The most recent releases landed on September 10, 2026 and September 21, 2026 respectively.
| Parameter | ABC GymSales Guest Waiver | CircadiaOS |
|---|---|---|
| Price | Free | Free |
| Rating | — | 3.8 (10 ratings) — better |
| Positive reviews | — | 66.7% of reviews |
| Number of ratings | — | 10 — better |
| Update frequency | Every 16 months | Every 3 days — better |
| Ads | Yes | Yes |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPad | iPhone, iPad — better |
| Requires iOS | 12.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 3 MB | 24 MB |
| Age rating | 4+ | 17+ |
| Developer | GymSales | CircadiaOS LLC |
In-app purchases
ABC GymSales Guest Waiver
No in-app purchases
CircadiaOS
- CircadiaOS Lite Monthly$9.991 Month
- CircadiaOS1 Month trial$19.991 Month
- CircadiaOS Lite Yearly$99.991 Year
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- CircadiaOS1 Month trial$159.991 Year
