Comparison

HeartOxy vs Cooldown Timer

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

Head to head
About

HeartOxy

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

Cooldown Timer

Features
Read full description

Cooldown helps you manage anger by giving you a simple, distraction-free timer to sit with your feelings and let them pass. When you feel anger rising, open Cooldown and start a session. The breathing orb guides your attention. When the feeling fades, stop the timer β€” your session is saved. Over time, the Dashboard shows your patterns: how often you use the app, how long your sessions run, and how you're improving. FEATURES β€’ One-tap anger timer with calming animation β€’ Session history with charts (day, week, month, year) β€’ Statistics: total sessions, average duration, personal best β€’ Guest mode β€” no account required to start β€’ Optional account to sync sessions across devices β€’ Dark teal design built for calm focus No ads. No in-app purchases. Just a tool to help you cool down.

Screenshots

HeartOxy4 screens
Cooldown Timer4 screens

Verdict

The call

The clearest difference is price: Cooldown Timer 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 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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Cooldown Timer 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 Β· 5 level
HeartOxy versus Cooldown Timer: the parameters behind the verdict, then further details
ParameterHeartOxyCooldown Timer
Price$3.99Free β€” better
Update frequencyEvery 3 daysβ€”
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, Apple Watch β€” betteriPhone
Requires iOS16.0 β€” better17.0
Further details β€” not scored
Size7 MB12 MB
Age rating4+4+
DeveloperBoon Piow LeongANH TRAN MERAZ

In-app purchases

None

HeartOxy

No in-app purchases

None

Cooldown Timer

No in-app purchases

Questions

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

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