HeartOxy vs UpDown
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HeartOxy
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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 — 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.
UpDown
This app automatically counts your squats using your iPhone and Apple Watch's motion sensors. It helps you build a daily squat habit with goal rings, streaks, and workout summaries. Customize your tempo and receive haptic feedback for set goals.
- Automatic rep tracking
- Daily squat goals and streaks
- Apple Watch integration
- Customizable squat tempo
- Workout history and summaries
- Haptic feedback for set goals
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Stop counting. Start squatting. The smartest rep counter for your leg day. Focus 100% on your form and muscle engagement. UpDown uses the precision motion sensors in your iPhone and Apple Watch to count every rep for you — and now helps you turn squats into a daily habit. [NEW in 1.2] - Daily Goal Ring: Set a daily squat goal and watch the ring fill up with every rep. - Streaks: Squat every day and keep your streak alive. - Workout Summary: See your reps, time, goal progress and streak the moment you finish. - 3-2-1 Countdown: Get into position before counting begins, so setup movements aren't counted. - Hold to Stop: Stopping takes a press-and-hold, so a stray tap never ends your workout. - Test Counting: Try a few practice squats to check your sensitivity before you start. [Key Features] - Precision Counting: Automatic rep tracking via advanced motion sensors. - Apple Watch Support: Track your sets and feel haptic alerts right on your wrist. - Customizable Tempo: Choose Slow, Normal or Fast to match your squat speed, or fine-tune it yourself. - Haptic Notifications: Get a vibration alert every time you hit your set goal. - Workout History: A 30-day chart, monthly calendar, weekly and monthly stats with trends, and every session by day. - Daily Reminder: Get a reminder at the time you choose so you never skip a day. Master your squats with UpDown. Download now!
Screenshots
Verdict
The clearest difference is price: UpDown at Free against HeartOxy's $3.99. HeartOxy's advantage is update cadence (every 3 days vs every 3 months). 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
UpDown is free to download; HeartOxy costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
HeartOxy ships an update every 3 days, UpDown every 3 months. The most recent releases landed on October 9, 2026 and October 10, 2026 respectively.
| Parameter | HeartOxy | UpDown |
|---|---|---|
| Price | $3.99 | Free — better |
| Rating | — | 3.0 (1 ratings) — better |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 3 days — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, Apple Watch | iPhone, Apple Watch |
| Requires iOS | 16.0 — better | 17.3 |
| Further details — not scored | ||
| Size | 7 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Boon Piow Leong | Jang Chang Hee |
In-app purchases
HeartOxy
No in-app purchases
UpDown
No in-app purchases








