Comparison

Breathe Bubbles vs OnionTimer · Time/Rep + Voice

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

Head to head
About

Breathe Bubbles

This science-based tool uses Apple Watch to visualize your breathing and analyze heart rate variability for real-time stress management. It offers guided exercises to improve focus, reduce anxiety, and enhance self-control, with comprehensive health metric insights and trend tracking.

Highlights
  • Real-time stress detection via HRV
  • Guided breathing exercises with animation
  • Prefrontal cortex recovery training
  • Trend recording and data feedback
  • Standalone Apple Watch use
  • Integration with Apple Health
Features
Read full description

Breath Bubbles: Make Your Breath Visible, Keep Stress Manageable A Science-Based Breathing Tool for Real-Time Insight – Exclusive Stress Management for Apple Watch Do you often feel: Mentally tense and struggling to relax? Anxious before bed, unable to fall asleep? Low in self-control, finding it hard to focus? Wanting to practice breathing meditation but not knowing where to start? Breath Bubbles makes breathing exercises intuitive, effortless, and sustainable for you. Combined with real-time HRV (Heart Rate Variability) analysis on Apple Watch, it lets you "see" stress, take control of your emotions, and rediscover calm amid a busy life. Key Feature Highlights Real-Time Stress Detection via HRV Apple Watch collects real-time heart rate data Dynamically calculates HRV to quantify stress levels Intuitively identify when you’re under high stress and adjust your physical/mental state in time Comprehensive Health Metric Insights Beyond HRV, it also integrates data like heart rate and respiratory rate Help you gain a fuller understanding of your physical condition and recovery ability Trend tracking makes changes in your health visible at a glance Guided Breathing Exercises Original "bubble" breathing animation for a more immersive practice experience Multiple modes to choose from: Quick Stress Relief Bubbles, Focus Enhancement Bubbles, Pre-Sleep Relaxation Bubbles, and Custom Breathing Rhythms Every breath is a moment of connection with yourself Prefrontal Cortex Recovery Training & Self-Control Improvement Focuses on restoring the function of the brain’s prefrontal cortex Enhances emotional regulation and self-control abilities Helps you stay calm and rational in high-stress situations Trend Recording & Data Feedback Daily stress fluctuation charts Long-term HRV trend tracking Statistics on the number and duration of breathing exercises Full integration with Apple Health for data syncing Standalone Use on Apple Watch No need to carry your iPhone – start practicing anytime, anywhere Perfect for fragmented time slots: between work tasks, before bed, or prior to meetings We believe that breathing is not the end goal of training, but the key to connecting your body and emotions. Breath Bubbles helps you find balance and control amid stress and busyness. Device & System Requirements iPhone: For viewing and managing breathing data Apple Watch Series 4 or later: Supports HRV detection and breathing training iOS 17 / watchOS 10 or later Privacy Protection Commitment Health data is stored only on your local device or in Apple Health. No data is uploaded or shared – only you can view and control your information. Download Breath Bubbles Now With each gentle breath, train yourself to be more calm and composed. Auto-Renewing Membership Terms Payment: After confirming your purchase, the amount will be charged to your iTunes account. Management: You can manage your subscription and auto-renewal settings in your account settings. Cancellation: Auto-renewal must be manually turned off at least 24 hours before the end of the current billing cycle. Renewal: A fee will be charged and the subscription period will be extended within 24 hours prior to the expiration of your current subscription. User Agreement https://breads-doubt-hvc.craft.me/E7oSn9RMvdwl7E Privacy Policy https://breads-doubt-hvc.craft.me/T68hDJ2XNewEs1

About

OnionTimer · Time/Rep + Voice

This app provides a professional at-home training assistant for various fitness routines. It offers multi-round circuits, dual time and count modes, customizable rest periods, and voice guidance. Track your progress with detailed data insights and enjoy a distraction-free, ad-free experience.

Highlights
  • Multi-round circuits for HIIT and Tabata
  • Dual time and count modes
  • Customizable rest periods
  • Voice guidance for workout changes
  • Haptic feedback for silent alerts
  • Detailed data tracking and progress insights
  • Ad-free experience
Read full description

OnionTimer – Your Professional At‑Home Training Assistant Core Features • Multi-Round Circuits: Perfect for HIIT, Tabata, and other structured interval formats • Dual Modes: Time Mode for planks, yoga holds, stretches; Count Mode for push-ups, squats, and other strength movements • Set Management: Customize rest between sets; auto-advance keeps training flow uninterrupted • Voice Guidance: Action changes, rest alerts, and set counts—eyes & hands stay on form • Haptic Feedback: Stay informed in silent environments without disturbing others • Data Tracking: Every set recorded with detailed progress insights Training Scenarios • HIIT (High-Intensity Interval Training) • 4‑Minute Tabata Protocol • Yoga / isometric hold timing • Strength training set management • Mobility & post-session stretching • Functional conditioning circuits Distinct Advantages • Modern & Minimal: Clean, intuitive, distraction-free interface • Precision Timing: Second-accurate engine ensures consistent pacing • Data Privacy: Stored locally (or via your personal WebDAV) for full control • Dark Mode: Light / dark themes for day & night comfort • Ad-Free: Pure focus—no interruptions Perfect For • Home fitness plans • Yoga studio session structuring • Rehab & recovery progression • Personal coaching templates • And more waiting for you to unlock Whether you’re dialing in explosive HIIT intervals, running Tabata rounds, or holding steady yoga poses, OnionTimer adapts to your rhythm. Smart rest handling plus clear voice prompts let you focus on movement quality—not on watching the clock. Start now—make every set more focused, more efficient, more intentional. We’d love to hear from you. Your feedback matters: Email: support@momastudio.site Xiaohongshu: @Dulk

Screenshots

Breathe Bubbles4 screens
OnionTimer · Time/Rep + Voice4 screens

Verdict

The call

The clearest difference is price: Breathe Bubbles at Free against OnionTimer · Time/Rep + Voice's $3.99. Breathe Bubbles also leads on review sentiment (90% vs 50%) and device support (3 vs 1). On update cadence, ads, in-app purchases 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

Breathe Bubbles is free to download; OnionTimer · Time/Rep + Voice costs $3.99 up front. Breathe Bubbles sells 9 in-app purchases, starting at $9.99 per month and OnionTimer · Time/Rep + Voice sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Breathe Bubbles ships an update weekly, OnionTimer · Time/Rep + Voice fortnightly. The most recent releases landed on September 24, 2026 and September 6, 2026 respectively.

Scorecard4 real differences · 6 level
Breathe Bubbles versus OnionTimer · Time/Rep + Voice: the parameters behind the verdict, then further details
ParameterBreathe BubblesOnionTimer · Time/Rep + Voice
PriceFree — better$3.99
Rating5.0 (3 ratings) — better—
Positive reviews90.0% of reviews — better50.0% of reviews
Number of ratings3 — better—
Update frequencyWeekly — betterFortnightly
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium — betterPaid
DevicesiPhone, iPad, Apple Watch — betteriPhone
Requires iOS17.016.0 — better
Further details — not scored
Size45 MB36 MB
Age rating4+4+
Developer希 陈超纯 邓

Customer experience

Breathe Bubbles

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews20 reviews
Positive90.0%
Neutral5.0%
Negative5.0%

OnionTimer · Time/Rep + Voice

Written reviews2 reviews
Positive50.0%
Neutral50.0%
Negative0.0%

In-app purchases

9 purchases

Breathe Bubbles

Subscriptions3
  • Monthly Membership$9.991 Month
  • Quarterly Membership$14.993 Months
  • Annual Membership3 Days trial$29.991 Year
One-time6
  • Snack Pack$4.99
  • Give a Coffee$8.99
  • a hamburger$9.99
Show 3 more
  • Lifetime Membership$34.99
  • Lifetime Membership$49.99
  • Lifetime Membership$99.99
1 purchases

OnionTimer · Time/Rep + Voice

One-time1
  • 终身会员$3.99

Questions

Is Breathe Bubbles free?
Breathe Bubbles is free to download, with in-app purchases available.
Is OnionTimer · Time/Rep + Voice free?
OnionTimer · Time/Rep + Voice costs $3.99, and also offers in-app purchases.
Do Breathe Bubbles or OnionTimer · Time/Rep + Voice have ads?
Neither Breathe Bubbles nor OnionTimer · Time/Rep + Voice shows ads.
Which is updated more often, Breathe Bubbles or OnionTimer · Time/Rep + Voice?
Breathe Bubbles ships an update weekly, and OnionTimer · Time/Rep + Voice fortnightly. Most recently, Breathe Bubbles was updated on September 24, 2026 and OnionTimer · Time/Rep + Voice on September 6, 2026.

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