Kanso vs ONE
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Kanso
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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/
ONE
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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
Verdict
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
Both are free to download. Kanso sells 2 in-app purchases, starting at $1.99 per month. ONE asks for nothing beyond the download.
Kanso ships an update weekly, ONE every 2 weeks. The most recent releases landed on October 12, 2026 and October 5, 2026 respectively.
| Parameter | Kanso | ONE |
|---|---|---|
| Price | Free | Free |
| Update frequency | Weekly — better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad, Apple Watch — better | iPhone |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 32 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Yutaro Kawahara | 骋飞 武 |
In-app purchases
Kanso
- Kanso Pro (Monthly)7 Days trial$1.991 Month
- Kanso Pro (Yearly)7 Days trial$9.991 Year
ONE
No in-app purchases









