Comparison

NanaTimer vs ONE

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

Head to head
About

NanaTimer

Features
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“NanaTimer” is a timer that sets your goal to study for seven days. ∙ Set your seven-day study hour goal and study with “NanaTimer.” ∙ The timer keeps running when the screen is off. ∙ Check your achievement with the study progress graph. ∙ Manage your study hours by checking your progress. ∙ Try reaching your study hour goal within seven days!

About

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

NanaTimer3 screens
ONE3 screens

Verdict

The call

The clearest difference is update cadence: NanaTimer at weekly against ONE's every 2 weeks. On price, ads, in-app purchases 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

NanaTimer ships an update weekly, ONE every 2 weeks. The most recent releases landed on September 17, 2026 and October 5, 2026 respectively.

Scorecard1 real difference · 5 level
NanaTimer versus ONE: the parameters behind the verdict, then further details
ParameterNanaTimerONE
PriceFreeFree
Update frequencyWeekly — betterEvery 2 weeks
AdsNoNo
In-app purchasesNoNo
DevicesiPhoneiPhone
Requires iOS17.017.0
Further details — not scored
Size4 MB2 MB
Age rating4+4+
DeveloperJEONGUK SHIN骋飞 武

In-app purchases

None

NanaTimer

No in-app purchases

None

ONE

No in-app purchases

Questions

Is NanaTimer free?
NanaTimer is free to download, with no in-app purchases.
Is ONE free?
ONE is free to download, with no in-app purchases.
Do NanaTimer or ONE have ads?
Neither NanaTimer nor ONE shows ads.
Which is updated more often, NanaTimer or ONE?
NanaTimer ships an update weekly, and ONE every 2 weeks. Most recently, NanaTimer was updated on September 17, 2026 and ONE on October 5, 2026.

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