Comparison

Mind Sutra vs Bubble Calm

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

Head to head
About

Mind Sutra

Engage in a meditative Japanese tradition by tracing sutra characters on your smartphone. This app offers a user-friendly interface, automatic character advancement, and pronunciation guides to promote relaxation, focus, and a sense of accomplishment.

Highlights
  • Meditative sutra tracing
  • Innovative coloring book interface
  • Automatic character advance
  • Modern translation of sutra
  • Furigana pronunciation guides
  • Copying log for progress tracking
  • Sample audio recitation
Read full description

Restless? Hard to concentrate in a busy world? Discover "Shakyo" (Sutra Copying)—a 1,000-year-old Japanese meditative tracing tradition, now in an innovative app. Our unique interface optimizes the smartphone sutra copying experience. Enjoy great ease of use and focus, with rich features to enhance your practice. 【Why Try Sutra Copying? The Amazing Benefits:】 Deep Relaxation: Quickly feel your mind calm during this peaceful activity. Boost Concentration: Carefully tracing each character helps distractions fade, guiding you to pleasant, focused awareness. Mental Detox: If traditional meditation is challenging, sutra copying focuses mental resources on your fingertips, easing you to a near-thoughtless state. Sense of Accomplishment & Self-Affirmation: Completing the Heart Sutra (approx. 15-30 min/session) brings achievement and inner stability. 【Unique Features of This App:】 Innovative "Coloring Book" Interface: Our unique, user-friendly interface offers a beautiful sutra tracing experience on your phone. Simply trace the on-screen characters with your finger. Like a digital coloring book, anyone can easily create beautiful sutra copies. Stress-Free "Automatic Character Advance": Once you've carefully traced a character, the app automatically moves to the next at the optimal timing. This helps you get into a rhythm and immerse yourself in calming and centering your mind. (Manual advance is an option). No Worries About Mistakes: Since you're tracing a model, you can relax and practice serenely without concern for errors. Deeper Understanding with "Modern Translation": Access a Japanese translation (modern vernacular) of the Heart Sutra anytime. Engage more profoundly by understanding the meaning and teachings within the sutra. Beginner-Friendly with "Full Furigana (Pronunciation Guide)": All Kanji characters for tracing are displayed with "Furigana" (pronunciation guides). Read and trace smoothly without getting stuck on difficult characters or old forms. Motivating "Copying Log": The app automatically records when and how much you've practiced. Seeing your progress at a glance provides accomplishment and motivates you to continue. Learn by Ear with "Sample Audio Recitation": Includes a standard audio recitation of the Heart Sutra. You can check the correct pronunciation as you go. The Heart Sutra, Perfect for Meditation, Made Easy: Features the Heart Sutra (~280 characters). A single session is about 15-30 minutes, ideal for daily meditation and a refreshing mental break. 【Recommended For Those Who:】 Are interested in meditation or mindfulness but aren't sure how to start. Want a quick and easy way to refresh and calm their mind amidst a busy schedule. Are students or professionals looking to improve focus and concentration. May have ADHD tendencies and find sustaining focus/sitting still hard; tactile tracing and short sessions can help ease into focused activity. Want to learn the meaning and correct pronunciation of the Heart Sutra. Often feel stressed or anxious and are seeking inner peace. Are looking for a new, relaxing bedtime routine. 【Easy to Use:】 Open the app and tap "Start" to display the Heart Sutra text and tracing characters. Begin by calming your mind. Focus on the shape and sound of each character as you carefully trace it, one stroke at a time. You can also listen to the audio recitation as you trace. As you continue, you'll naturally feel your mind settle and distractions fade. If you wish to contemplate the meaning, refer to the modern translation. Upon completion, you'll automatically return to the menu, and your session time is logged. Observe your progress and changes in your state of mind. Note: To go at your own pace or if unsure of stroke order, turn off "Automatic Character Advance" in Settings for manual advance. Experience a new way of sutra copying—just by tracing with your finger. Download now and bring a touch of serenity to your everyday life.

About

Bubble Calm

Features
Read full description

Bubble Calm: Your Peaceful Escape A small space to slow down. Tap. Breathe. Let go. Bubble Calm is a beautifully simple app designed to help you find moments of calm in your day. No goals. No pressure. No distractions. Just you and the gentle rhythm of bubbles floating and popping. WHY BUBBLE CALM? In our fast-paced world, we all need moments to pause. Bubble Calm creates a peaceful digital space where you can slow down, breathe, and simply be present. Whether you need a quick 30-second break or a longer meditation session, Bubble Calm adapts to your needs. KEY FEATURES Simple & Beautiful Experience the calming satisfaction of popping bubbles with an elegant, minimalist interface designed to reduce stress and promote relaxation. Customize Your Experience • Choose from multiple bubble colors and visual styles • Select your favorite background (solid colors, gradients, or subtle patterns) • Adjust bubble sizes and falling speeds to match your mood Ambient Soundscapes (Plus) Enhance your calm with procedurally generated ambient sounds: • Ocean waves • Gentle rain • White noise • Pink noise Breathing Guides (Plus) Follow gentle breathing exercises with visual overlays: • Calm 4/6 breathing • Box 4/4 breathing • Long exhale 4/8 breathing Enhanced Pop Effects (Plus) Experience satisfying visual feedback with: • Particle effects • Trailing animations • Ripple effects Multiple Presets Quickly switch between curated experiences: • Zen Sparse: Slow, meditative bubbles • Soft Rain: Gentle, continuous flow • One Bubble: A single large bubble for maximum calm (Plus) Premium Features (Bubble Calm Plus) Unlock the full experience with Bubble Calm Plus: • Unlimited bubble color customization • Multi-color modes (single, multiple, gradient, cycling) • Enhanced visual styles (realistic, metallic, glossy) • Background customization (solid, gradient, patterns) • Ambient soundscapes with volume control • Breathing overlay guides • Advanced settings and presets • One-bubble calm preset HOW IT WORKS Simply open the app and tap "Start." Bubbles will begin floating down your screen. Tap them to pop them—there's no score, no timer, no pressure. Just the satisfying sensation of popping bubbles at your own pace. Customize your experience through the settings menu. Adjust bubble sizes, speeds, colors, and backgrounds to create the perfect calming environment for you. WHEN TO USE BUBBLE CALM • Before an important meeting or presentation • During a stressful moment at work • Before bed to wind down • During a break between tasks • Anytime you need a moment to breathe PRIVACY & SIMPLICITY Bubble Calm respects your privacy. All gameplay statistics and preferences are stored locally on your device. We don't collect personal information, and you don't need to create an account to use the app. DESIGNED FOR CALM Every aspect of Bubble Calm has been carefully designed to promote relaxation: • Soft, rounded typography • Gentle animations • Calming color palettes • No notifications or distractions • Dark mode optimized Start your journey to calm today. Download Bubble Calm and discover your peaceful space.

Screenshots

Mind Sutra4 screens
Bubble Calm4 screens

Verdict

The call

The clearest difference is price: Bubble Calm at Free against Mind Sutra's $5.99. Bubble Calm also leads on update cadence (daily vs every 7 months). Mind Sutra's advantage is in-app purchases (none vs 1) and iOS requirement (16.6 vs 18.6). On ads and device support 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

Bubble Calm is free to download; Mind Sutra costs $5.99 up front. Bubble Calm sells 1 one-off in-app purchase. Mind Sutra asks for nothing beyond the download.

UpkeepUpdate frequency

Mind Sutra ships an update every 7 months, Bubble Calm daily. The most recent releases landed on October 12, 2026 and October 5, 2026 respectively.

Scorecard4 real differences · 4 level
Mind Sutra versus Bubble Calm: the parameters behind the verdict, then further details
ParameterMind SutraBubble Calm
Price$5.99Free — better
Positive reviews25.0% of reviews—
Update frequencyEvery 7 monthsDaily — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.6 — better18.6
Further details — not scored
Size108 MB10 MB
Age rating4+4+
DeveloperQOOQ inc.picturing bits

In-app purchases

None

Mind Sutra

No in-app purchases

1 purchases

Bubble Calm

One-time1
  • Bubble Calm Plus$1.99

Questions

Is Mind Sutra free?
Mind Sutra costs $5.99, with no in-app purchases.
Is Bubble Calm free?
Bubble Calm is free to download, with in-app purchases available.
Do Mind Sutra or Bubble Calm have ads?
Neither Mind Sutra nor Bubble Calm shows ads.
Which is updated more often, Mind Sutra or Bubble Calm?
Mind Sutra ships an update every 7 months, and Bubble Calm daily. Most recently, Mind Sutra was updated on October 12, 2026 and Bubble Calm on October 5, 2026.

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