Replex vs BloodOxygenMonitor
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Replex
Log your gym and calisthenics routines with this comprehensive fitness planner. Track sets, reps, and weight, analyze your progress with detailed analytics, and sync seamlessly across devices. Achieve your fitness goals with intelligent workout management.
- Workout tracking from iPhone and Apple Watch
- Comprehensive exercise library with muscle map
- Customizable workout templates
- Detailed analytics and progress visualization
- Calendar integration for scheduling
- iCloud sync across devices
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Replex helps you plan workouts, track sets & reps, and stay consistent β whether you train in the gym or with calisthenics. Log workouts on iPhone, track from Apple Watch, and use analytics to see real progress. KEY FEATURES AI COACH (Pro) β’ Chat about your training β last month, a specific workout, or next weekβs plan β’ Build and edit workout templates from conversation β’ Schedule strength days and future runs β review the plan, then tap Apply β’ Ask about a finished workout or imported run from its detail screen β’ Nothing is saved to your calendar or templates until you confirm WORKOUT TRACKING (iPhone + Apple Watch) β’ Track sets, reps, weight, and time β’ Edit sets inline on iPhone; one-tap set logging on Apple Watch β’ Record strength workouts on iPhone when Apple Watch isnβt available β’ Live Activity on the Lock Screen during phone-owned sessions β’ Start workouts with Siri β’ Real-time workout metrics (heart rate, calories, elapsed time) β’ HealthKit sync TRAINING MAP + HISTORY β’ See runs, rides, and gym sessions clustered by place in All Workouts β’ Full-screen route details with correct local time β’ Easier re-import of outdoor activities from Apple Health TEMPLATES + PLANNING β’ Start fast with built-in workout templates β’ Create your own templates (Pro) β’ Schedule strength and cardio on your calendar (Pro) β’ Explore 150+ exercises with an interactive muscle map ANALYTICS (Pro) β’ Workout frequency, streaks, and trends β’ Strength progress by exercise β’ Muscle group distribution β’ Running and walking distance charts β’ Interactive heart rate chart on completed workouts HEALTH IMPORTS β’ Import outdoor runs and rides from Apple Health with route maps β’ Notifications when new outdoor activities arrive SYNC + EXPERIENCE β’ iCloud sync across devices β’ Settings sync between iPhone and Watch β’ Redesigned workout share cards β’ 50+ languages supported Privacy Policy: https://alexriakhin.com/Replex/privacy Terms of service: https://alexriakhin.com/Replex/terms
BloodOxygenMonitor
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Oxygen Saturation Monitoring Alerts β Your Personal Health Guardian Your Apple Watch continuously monitors your oxygen saturation levels. When your blood oxygen drops below the threshold youβve set, it delivers immediate vibration alerts β especially useful during sleep in high-altitude or low-oxygen environments. This helps you stay aware of your respiratory health at a glance. Core Features β’ Real-time Oxygen Monitoring Leveraging the blood oxygen sensor on Apple Watch Series 6 or later, your device continuously tracks your oxygen saturation for accurate and reliable health insights. β’ Smart Alert System When your oxygen saturation falls below your preset threshold, it triggers a strong vibration alert β ensuring youβre immediately aware and can take prompt action. β’ Historical Record Management Each low-oxygen alert is fully logged with timestamp, value, and severity level β helping you track trends over time and providing valuable reference data for medical consultations. β’ Cross-Platform Sync Data from your iPhone and Apple Watch syncs seamlessly. All alerts, logs, and analytics are instantly accessible on your iPhone app for comprehensive review. iPhone App Highlights β’ In-depth Data Analytics Detailed statistical breakdowns of your oxygen levels β including trends, averages, and anomalies. β’ Flexible Settings Customize alert thresholds and monitoring parameters to suit your health profile β from sleep patterns to activity levels. Apple Watch App Highlights β’ Clean & Intuitive Interface Designed for optimal use on your watch face β easy navigation, minimal taps. β’ One-Tap Control Quickly start or stop monitoring with one tap β no fuss, no delay. β’ Immediate Vibration Alerts + Sound Options Strong vibration alerts for low oxygen β you can also choose to enable a gentle chime or tone as a secondary alert. β’ Real-time Status Display See your most recent blood oxygen reading and monitoring status β instantly, whenever you want. Privacy & Security Local Data Storage Only All health data is stored on your device by default β it never goes to a thirdβparty server. Optional iCloud Backup You decide whether to back up the data to iCloud. No cloud sync is performed unless you enable it. Full Control You can delete the app and all associated health data at any time β you own your information. Transparent Permission Management The app only requests essential permissions: HealthKit access for health data and workout status to enable sleep monitoring β nothing else. Medical Disclaimer This app is for health monitoring and alerting purposes only. It does not provide medical diagnosis or treatment. The data it provides is for informational and general health awareness β never a substitute for professional medical advice. If you have any health concerns, please consult a licensed healthcare provider. System Requirements β’ iPhone: iOS 15.0 or later β’ Apple Watch: watchOS 8.0 or later β’ Device: This app requires an Apple Watch with Blood Oxygen sensor (Series 6 or later). Blood oxygen data is read from HealthKit as measured by Apple Watch's built-in sensor. This app does not perform independent blood oxygen measurements. Ideal For β’ Anyone concerned about respiratory health β’ Individuals with sleep apnea or breathing issues β’ Hikers, trekkers, and travelers to high altitudes β’ Patients managing chronic conditions requiring oxygen monitoring β’ Health-conscious users seeking proactive, preventive care Download Now β Begin Your Smart Health Monitoring Journey Today! β Note: This application is not a medical device and does not replace professional healthcare. All data collected is for personal health awareness β always consult a physician if you have any concerns about your condition or symptoms. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.apple.com/legal/privacy/
Screenshots
Verdict
The clearest difference is update cadence: BloodOxygenMonitor at every 2 weeks against Replex's monthly. BloodOxygenMonitor also leads on iOS requirement (18.5 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Replex sells 5 in-app purchases, starting at $3.99 per 7 days and BloodOxygenMonitor sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.
Replex ships an update monthly, BloodOxygenMonitor every 2 weeks. The most recent releases landed on September 25, 2026 and September 16, 2026 respectively.
| Parameter | Replex | BloodOxygenMonitor |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | β |
| Update frequency | Monthly | Every 2 weeks β better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | β |
| Devices | iPhone, Apple Watch | iPhone, iPad, Apple Watch β better |
| Requires iOS | 26.0 | 18.5 β better |
| Further details β not scored | ||
| Size | 95 MB | 49 MB |
| Age rating | 4+ | 4+ |
| Developer | Alexander Ryakhin | ζΊζ η¦ |
In-app purchases
Replex
- Weekly Subscription3 Days trial$3.997 Days
- Monthly Subscription7 Days trial$5.991 Month
- Annual Subscription$29.991 Year
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- Annual Subscription7 Days trial$39.991 Year
- Lifetime Access$79.99
BloodOxygenMonitor
- Monthly$0.991 Month
- Yearly$4.991 Year
- Lifetime$9.99
Questions
Is Replex free?
Is BloodOxygenMonitor free?
Do Replex or BloodOxygenMonitor have ads?
Which is updated more often, Replex or BloodOxygenMonitor?
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