Comparison

HeartOxy vs MyCaffeineLog

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

HeartOxy

Features
Read full description

Train Smarter with Your Apple Watch No subscriptions. No extra devices. Just your Apple Watch. HeartOxy helps you train in the right heart rate zone — with real-time feedback during your workouts, guided by your recent heart rate trends. Train Based on Your Daily Condition ———————————————————- Your body isn’t the same every day. HeartOxy looks at your recent heart rate patterns to give simple, actionable guidance: • See your daily readiness at a glance • Know when to push a little harder • Know when to ease into your workout No complicated metrics — just clear direction. Real-Time Heart Rate Zone Feedback ————————————————————- During your workout, HeartOxy keeps you on track: • Live heart rate zone tracking on Apple Watch • Color-coded zone indicators • Instant haptic alerts when you go above or below your target Stay in your zone without constantly checking your screen. Customize Your Training Zones ————————————————— Set up your preferred heart rate zones and thresholds: • Warm-up, Fat Burn, Aerobic, Anaerobic, Maximum or Custom • Adjustable upper and lower limits • Fine-tune how sensitive alerts should be Your zones, your training style. Review Your Workouts ———————————— After each session, understand how you performed: • Time spent in each heart rate zone • Workout history and trends • Export your data for deeper analysis (Up to 90 days of data) • Built-in CSV Export function for easy analysis and sharing. Smart Alerts That Keep You Focused ———————————————————— HeartOxy gives you timely, simple feedback: • Below Zone → “Pick up the pace” • In Zone → “In your zone” • Above Zone → “Slow it down” Clear, immediate guidance — no guesswork. No Subscription ————————— • One purchase. Full access. Family Sharing encouraged. Built for Apple Watch ———————————— • Uses Apple Watch heart rate sensors • Seamless sync between Watch and iPhone Important Notes ————————— HeartOxy is designed for fitness and training purposes only. It is not a medical device and does not provide medical advice. Train smarter. Stay in your zone. Make every workout count.

About

MyCaffeineLog

This app helps you monitor your caffeine intake in real-time using scientifically accurate decay modeling. It provides personalized sleep recommendations and weekly statistics to help you make informed decisions about your consumption and improve sleep quality.

Highlights
  • Real-time caffeine level tracking
  • Quick logging of caffeinated drinks
  • Personalized sleep recommendations
  • Weekly caffeine consumption statistics
  • Customizable drink library
  • Smart notifications for caffeine levels
  • Offline and private operation
Features
Read full description

Ever wonder how much caffeine is still in your system? CaffeineLog tracks every cup and shows you exactly where your caffeine levels stand — in real time. Make smarter decisions about your next coffee and get better sleep tonight. KEY FEATURES • Real-Time Caffeine Tracking See your current caffeine level calculated using scientifically accurate half-life decay modeling. • Quick Drink Logging Log coffee, tea, energy drinks, and more with just a few taps. • Sleep Recommendations Get personalized suggestions on when it's safe to sleep based on your caffeine metabolism. • Weekly Statistics View daily averages, peak consumption days, and 7-day trends at a glance. • Drink Library Choose from a comprehensive list of popular caffeinated beverages with preset caffeine amounts. • Custom Drinks Add your own beverages with custom caffeine values. • Smart Notifications Get alerts when your caffeine level is high or when it's safe to sleep. • Beautiful Dark Interface OLED-optimized design with smooth animations and haptic feedback. • 100% Offline & Private Works entirely on your device. No accounts, no cloud, no tracking. PERFECT FOR • Coffee lovers who want to understand their caffeine habits • People looking to improve sleep quality by managing caffeine timing • Health-conscious individuals tracking daily stimulant intake • Anyone curious about how long caffeine actually stays in their body WHY CAFFEINELOG? CaffeineLog is built with privacy at its core. All your data stays on your device — no accounts, no cloud syncing, no tracking. Just a simple, powerful tool to help you understand and manage your caffeine intake so you can feel your best every day. Download CaffeineLog today and take control of your caffeine habits! --- Privacy Policy: https://seochan-company.vercel.app/caffeinelog/privacy Support: https://seochan-company.vercel.app/caffeinelog/support

Screenshots

HeartOxy4 screens
MyCaffeineLog4 screens

Verdict

The call

The clearest difference is price: MyCaffeineLog at Free against HeartOxy's $3.99. On ads, in-app purchases, device support and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

MyCaffeineLog is free to download; HeartOxy costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Scorecard1 real difference · 9 level
HeartOxy versus MyCaffeineLog: the parameters behind the verdict, then further details
ParameterHeartOxyMyCaffeineLog
Price$3.99Free — better
Rating—1.0 (1 ratings) — better
Positive reviews—0.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 3 days—
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, Apple Watch — betteriPhone
Requires iOS16.0 — better17.0
Further details — not scored
Size7 MB2 MB
Age rating4+4+
DeveloperBoon Piow LeongHui Chan Seo

In-app purchases

None

HeartOxy

No in-app purchases

None

MyCaffeineLog

No in-app purchases

Questions

Is HeartOxy free?
HeartOxy costs $3.99, with no in-app purchases.
Is MyCaffeineLog free?
MyCaffeineLog is free to download, with no in-app purchases.
Do HeartOxy or MyCaffeineLog have ads?
Neither HeartOxy nor MyCaffeineLog shows ads.

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