Comparison

Bubble Calm vs Kanso

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

Head to head
About

Bubble Calm

Features
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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 β€’ Choose from multiple bubble colors and visual styles β€’ Select your favorite background (solid colors, gradients, or subtle patterns) β€’ Adjust bubble sizes and falling speeds to match your mood Ambient Soundscapes (Plus) Enhance your calm with procedurally generated ambient sounds: β€’ Ocean waves β€’ Gentle rain β€’ White noise β€’ Pink noise Breathing Guides (Plus) Follow gentle breathing exercises with visual overlays: β€’ Calm 4/6 breathing β€’ Box 4/4 breathing β€’ Long exhale 4/8 breathing Enhanced Pop Effects (Plus) Experience satisfying visual feedback with: β€’ Particle effects β€’ Trailing animations β€’ Ripple effects Multiple Presets Quickly switch between curated experiences: β€’ Zen Sparse: Slow, meditative bubbles β€’ Soft Rain: Gentle, continuous flow β€’ One Bubble: A single large bubble for maximum calm (Plus) Premium Features (Bubble Calm Plus) Unlock the full experience with Bubble Calm Plus: β€’ Unlimited bubble color customization β€’ Multi-color modes (single, multiple, gradient, cycling) β€’ Enhanced visual styles (realistic, metallic, glossy) β€’ Background customization (solid, gradient, patterns) β€’ Ambient soundscapes with volume control β€’ Breathing overlay guides β€’ Advanced settings and presets β€’ 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 themβ€”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 β€’ Before an important meeting or presentation β€’ During a stressful moment at work β€’ Before bed to wind down β€’ During a break between tasks β€’ 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: β€’ Soft, rounded typography β€’ Gentle animations β€’ Calming color palettes β€’ No notifications or distractions β€’ Dark mode optimized Start your journey to calm today. Download Bubble Calm and discover your peaceful space.

About

Kanso

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Just one a day. Kanso - Minimal places today's photo on a sheet of washi paper, lets you add a word, and then lets it go. It is not made for collecting photos. It is made for letting them go. - A DAY, IN FOUR STEPS 1. Take or choose Shoot right there, or pick a single photo from your library. 2. Compose Choose the shape (square, circle, rectangle), the paper, and the tone. Few choices, so there is little to hesitate over. 3. Write Add one line. With the keyboard, or by hand with your finger. Three pens - fountain, brush, pencil - and five inks. Write slowly and the line thickens; sweep quickly and it breaks into dry-brush marks. 4. Let go The card drifts away on the wind, and only empty space remains. - YOU DECIDE WHAT STAYS Before letting go, you can save the card as an image or share it. Do nothing, and nothing remains. - THE HOLDING PLACE Not sure yet? Set a card aside for later. Sort into Discard, Give, Sell, or Undecided, and decide another day. - iPAD AND APPLE PENCIL On iPad, a canvas lets you draw directly on the paper. Line width follows pressure, and quick strokes break into dry-brush marks. Once Apple Pencil is in use, finger touches are ignored, so you can rest your hand. Turn the device sideways and the card becomes a picture diary - photo on the left, words on the right. - KOYOMI - A ONE-TIME PURCHASE For the days you do want to keep. After you unlock it, every card you let go stays quietly in a calendar on your device. You can also choose a past date and fill in that day after the fact. It also lets you hide the date in the lower-right corner of a card, and adds four watercolor washi papers: Blossom, Mist, Leaf, and Wisteria. One payment, not monthly or yearly. Cards you let go before purchasing are not restored. - EVERYTHING STAYS ON YOUR DEVICE Your photos and your words are never sent anywhere. No account to create, and no analytics of any kind. Your original photos in the library are never modified. Japanese / English iPhone and iPad

Screenshots

Bubble Calm4 screens
Kanso4 screens

Verdict

The call

The clearest difference is update cadence: Bubble Calm at daily against Kanso's every 4 days. On price, ads, in-app purchases and device support 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

Both are free to download. Bubble Calm sells 1 one-off in-app purchase and Kanso sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Bubble Calm ships an update daily, Kanso every 4 days. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

Scorecard1 real difference Β· 5 level
Bubble Calm versus Kanso: the parameters behind the verdict, then further details
ParameterBubble CalmKanso
PriceFreeFree
Update frequencyDaily β€” betterEvery 4 days
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.617.6 β€” better
Further details β€” not scored
Size10 MB29 MB
Age rating4+4+
Developerpicturing bitsYutaro Kawahara

In-app purchases

1 purchases

Bubble Calm

One-time1
  • Bubble Calm Plus$1.99
1 purchases

Kanso

One-time1
  • Koyomi$3.99

Questions

Is Bubble Calm free?
Bubble Calm is free to download, with in-app purchases available.
Is Kanso free?
Kanso is free to download, with in-app purchases available.
Do Bubble Calm or Kanso have ads?
Neither Bubble Calm nor Kanso shows ads.
Which is updated more often, Bubble Calm or Kanso?
Bubble Calm ships an update daily, and Kanso every 4 days. Most recently, Bubble Calm was updated on October 28, 2026 and Kanso on October 25, 2026.

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