Comparison

Mui vs One Task

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

Head to head
About

Mui

Features
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Mui - ๅนธใ›ใฎใŸใ‚ใฎๆ™‚้–“็ฎก็†ใ‚ขใƒ—ใƒชใฏใ€ ใ‚ใชใŸใŒใƒ›ใƒณใƒˆใซๅนธใ›ใชๆ™‚้–“ใ‚’้Žใ”ใ›ใŸใ‹ใ‚’ใƒใ‚งใƒƒใ‚ฏใ™ใ‚‹ใ‚ขใƒ—ใƒชใงใ™ใ€‚ ใ€Œๆ™‚ใฏ้‡‘ใชใ‚Šใ€ใจใ„ใ†่จ€่‘‰ใŒใ‚ใ‚Šใพใ™ใŒใ€ ้‡‘ใ ใ‘ใ‚ใฃใฆๅนธใ›ใซใชใ‚Œใชใ„ใชใ‚‰ๆ„ๅ‘ณใŒใชใ„ใงใ™ใ‚ˆใญใ€‚ ๅนธใ›ใชๆ™‚้–“ใ‚’ใ‚ญใƒฌใ‚คใชใ‚ฐใƒฉใƒ•ใง่ฆ–ใˆใ‚‹ๅŒ–ใ—ใพใ™ใ€‚ ๅนธ็ฆใ‚’ๆ„Ÿใ˜ใ‚‹ๆ™‚้–“ใŒ้•ทใ„ใปใฉใ€ๅนธ็ฆๅบฆใŒ้ซ˜ใใ€ๆœฌๅฝ“ใฎไบบ็”Ÿใ‚’ๆญฉใ‚€ๆ‰‹ๅŠฉใ‘ใซใชใ‚Šใพใ™ใ€‚ ใ€Œๆ™‚ใฏๅนธใ›ใชใ‚Šใ€ใ‚’ไฝœใ‚‹ใŸใ‚ใฎใ‚ขใƒ—ใƒชใ€‚ ใใ‚ŒใŒ Mui ใชใฎใงใ™ใ€‚ ๅนธ็ฆใชๆ™‚้–“ใ‚’ๅข—ใ‚„ใ—ใฆใ€ๅ…ฌ้–‹ใ—ใชใ„ไบบ็”Ÿใ‚’ใคใใฃใฆใ„ใใพใ—ใ‚‡ใ†๏ผ

About

One Task

Features
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Too many tasks leave you overwhelmed. One Task is a minimalist to-do app that helps you focus on the single most important thing right now. Nothing more. Nothing less. Instead of juggling endless to-do lists, One Task limits you to just one main task. This simple constraint helps you reduce mental clutter and actually finish what you start. You can break your main task into a few small subtasks, but you'll always know what truly deserves your attention. Finished tasks are archived automatically, so you can look back or restore them anytime. Got something you want to do later? Unlock Vault to stash it away without losing focus on what matters right now. NEW: AI Subtask Breakdown Not sure where to start? Just enter your main task, and AI will split it into clear, actionable subtasks. Pick only the ones you need. Free users can try it once a day. Subscribe to AI Subtask Breakdown and your subtask limit increases from 5 to 10 โ€” for both AI-generated and manually added subtasks. One Task is designed for people who want clarity, focus, and calm productivity. No accounts. No complex features. Just one task at a time. Privacy policy https://hushed-coriander-11e.notion.site/One-Task-2c6a05a584c080bf8deaf1b8fc434267 Term of use https://app.notion.com/p/One-Task-2c7a05a584c080029193ec23640a0c7e

Screenshots

Mui4 screens
One Task3 screens

Verdict

The call

The clearest difference is in-app purchases: Mui at none against One Task's 3. Mui also leads on update cadence (every 2 days vs every 4 weeks) and iOS requirement (9.0 vs 17.6). One Task's advantage is ads (none vs shown). On price and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. One Task sells 3 in-app purchases, starting at $3.99 per month. Mui asks for nothing beyond the download.

UpkeepUpdate frequency

Mui ships an update every 2 days, One Task every 4 weeks. The most recent releases landed on September 16, 2026 and September 29, 2026 respectively.

Scorecard4 real differences ยท 2 level
Mui versus One Task: the parameters behind the verdict, then further details
ParameterMuiOne Task
PriceFreeFree
Update frequencyEvery 2 days โ€” betterEvery 4 weeks
AdsYesNo โ€” better
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPad, iPod โ€” betteriPhone, iPad
Requires iOS9.0 โ€” better17.6
Further details โ€” not scored
Size61 MB1 MB
Age rating4+4+
DeveloperHaga KunihikoKAZUHO MOROFUJI

In-app purchases

None

Mui

No in-app purchases

3 purchases

One Task

Subscriptions2
  • One Task AI Monthly$3.991 Month
  • OneTask AI Yearly$24.991 Year
One-time1
  • One Task Plus$1.99

Questions

Is Mui free?
Mui is free to download, with no in-app purchases.
Is One Task free?
One Task is free to download, with in-app purchases available.
Do Mui or One Task have ads?
Mui shows ads; One Task does not.
Which is updated more often, Mui or One Task?
Mui ships an update every 2 days, and One Task every 4 weeks. Most recently, Mui was updated on September 16, 2026 and One Task on September 29, 2026.

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