Comparison

Kanso vs ONE

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

Head to head
About

Kanso

Features
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Simplicity — handle multitasking with ease. Kanso is the ultimate task management app designed with the spirit of Zen, to bring clarity and balance to the way you live. ■ Key Features · Pick your 3 Most Important Tasks (MITs) each morning — the things that truly must get done today · Instantly capture fleeting thoughts with Voice Mind Dump · Auto-sort tasks by importance and urgency with the Eisenhower Matrix · Automatically schedule focus blocks in your Calendar app · Track everything you've delegated in the Waiting On page · Monitor progress across all your work in the Projects page · Stay in the zone with a Pomodoro timer (25 min focus / 5 min break) · Watch a beautiful Japanese landscape transform as you complete your MITs · Switch seamlessly between Japanese and English ■ Pro Features (¥300/month · ¥1,800/year) · Unlimited BACKLOG tasks, Mind Dumps, projects, and delegated tasks · Recurring tasks (daily, weekly, monthly) · Full Eisenhower Matrix prioritization (free plan: once per day) · Background themes: Rock Garden, Bonsai, Sakura (free plan: Rock Garden only) ■ Who It's For · Executives and managers juggling countless projects and responsibilities every day · Anyone exhausted by constant context-switching between tasks · People who chase efficiency yet keep losing sight of what truly matters · Those who appreciate design that is both minimal and intellectually refined ■ Subscription · Monthly plan: ¥300/month (auto-renewing) · Annual plan: ¥1,800/year (auto-renewing · save 50%!) · Payment is charged to your Apple ID · Manage or cancel anytime in your App Store account settings · Includes a 7-day free trial · Subscription auto-renews unless cancelled at least 24 hours before the end of the current period · Privacy Policy: https://bevel-porch-9ea.notion.site/Kanso-37217501552180ca9a26c80df73b0489 · Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

ONE

Read full description

Not another to-do list. ONE Focus is a single-task focus timer for a deeper life. You commit to one thing at a time—nothing else on screen, nothing competing for your attention. WHY ONE FOCUS? • One thing only — no lists, no tabs, no clutter • Start in one line — type a title, press return, begin • Gentle accountability — a progress check-in every 45 minutes • Five-step progress — 0, 25, 50, 75, or 100%, with an optional note • Quiet by design — no streak anxiety, no gamification, no noise • Night quiet hours — no notifications between 22:00 and 09:00 • Minimal history — see what you've finished, nothing more HOW IT WORKS 1. Enter one thing and start 2. Stay with it — elapsed time keeps you honest 3. Respond to check-ins when prompted (or update progress anytime) 4. Mark complete when you're done 5. Move on to the next moment DESIGNED TO FEEL CALM Editorial Noir typography, generous whitespace, and champagne-gold accents. Dark-first. No feature bloat. No account required. Everything stays on your device. Built for focus, study, deep work, and everyday presence—reading to your child, cooking a meal, taking a walk, creating something meaningful, or simply being here. Download. Pick one thing. Live it fully.

Screenshots

Kanso4 screens
ONE3 screens

Verdict

The call

The clearest difference is in-app purchases: ONE at none against Kanso's 2. Kanso's advantage is update cadence (weekly vs every 2 weeks) and device support (3 vs 1). On price, ads 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

Both are free to download. Kanso sells 2 in-app purchases, starting at $1.99 per month. ONE asks for nothing beyond the download.

UpkeepUpdate frequency

Kanso ships an update weekly, ONE every 2 weeks. The most recent releases landed on October 12, 2026 and October 5, 2026 respectively.

Scorecard3 real differences · 3 level
Kanso versus ONE: the parameters behind the verdict, then further details
ParameterKansoONE
PriceFreeFree
Update frequencyWeekly — betterEvery 2 weeks
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhone, iPad, Apple Watch — betteriPhone
Requires iOS17.017.0
Further details — not scored
Size32 MB2 MB
Age rating4+4+
DeveloperYutaro Kawahara骋飞 武

In-app purchases

2 purchases

Kanso

Subscriptions2
  • Kanso Pro (Monthly)7 Days trial$1.991 Month
  • Kanso Pro (Yearly)7 Days trial$9.991 Year
None

ONE

No in-app purchases

Questions

Is Kanso free?
Kanso is free to download, with in-app purchases available.
Is ONE free?
ONE is free to download, with no in-app purchases.
Do Kanso or ONE have ads?
Neither Kanso nor ONE shows ads.
Which is updated more often, Kanso or ONE?
Kanso ships an update weekly, and ONE every 2 weeks. Most recently, Kanso was updated on October 12, 2026 and ONE on October 5, 2026.

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