Comparison

Memento Mori vs ArcDay

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

Head to head
About

Memento Mori

Features
Read full description

Memento Mori: Time Left turns your life into a single, powerful image: a grid where every square is one week. See how many weeks you've lived and how many you might have left — and use that perspective to live more intentionally. Your life, one grid • Life in weeks — Each square is one week. Lived weeks, your current week, and what's ahead are shown at a glance. • Based on real data — Life expectancy uses country-specific data (World Bank / WHO) so the timeline reflects where you live. • Optional habits — If you share habits like smoking, drinking, or inactivity, the app can show "recoverable" weeks — time you could gain by making changes. Your answers stay on your device. Privacy first All your personal data — name, birthday, country, habits — is stored only on your device. Nothing is sent to our servers. Your timeline is yours alone. Track the people who matter (Premium) Add family and friends as "Close Ones" and see their life in weeks too. A simple way to appreciate the time you have together. Gentle reminders (Premium) Set weekly, monthly, or yearly reminders, plus birthday reminders for yourself and your close ones — so you never lose sight of what matters. Your timeline on your home screen (Premium) A home screen widget shows your life progress at a glance — a daily nudge to use your time well. Premium in one purchase • One-time purchase (no subscription) • Ad-free experience • Unlimited Close Ones • Smart notifications (weekly, monthly, yearly, birthdays) • Home screen widget Made for reflection Memento Mori: Time Left isn't about fear — it's about clarity. When you see your life in weeks, "someday" becomes "this week." For anyone who wants to waste less time and live with more intention, this is your mirror.

About

ArcDay

Visualize your important dates, habits, and personal milestones as beautiful 'Time Arcs.' Track countdowns, maintain streaks, and reflect on your progress with daily check-ins and a calendar view. Customize your arcs with neon themes and see your time at a glance.

Highlights
  • Countdown to important dates
  • Track habit streaks
  • Visualize time periods as arcs
  • Daily check-ins and reflections
  • Arc calendar for reviewing past events
  • Home screen widgets
Features
Read full description

ArcDay is a countdown widget, habit tracker, D-Day calendar, and time progress app that turns important dates and routines into beautiful Time Arcs. Track the days you wait for, the habits you keep, and the chapters you live through — all in one visual timeline. Main features • Countdown / D-Day Count down to trips, birthdays, exams, anniversaries, concerts, launches, and important events. • Habit Streaks / D+ Track routines like exercise, study, reading, no smoking, sobriety, daily goals, and personal challenges. • Chapter Arc Follow time periods with a start and end date, such as travel, projects, vacations, exam prep, or challenges. • Progress Arc See how today, this week, this month, and this year are moving with beautiful progress arcs. • Check-ins & Notes Add your mood, reason, and one-line notes to remember why each arc matters. • Arc Calendar View countdowns, streaks, notes, birthdays, milestones, and chapters by date. • Home Screen Widgets Keep your most important countdowns, habits, and chapters visible on your Home Screen. ArcDay is made for people who want more than a simple countdown timer. It helps you see time, stay motivated, and keep meaningful dates close. Use ArcDay to: • Count down to important dates • Build habit streaks • Track D-Day events • Follow personal chapters • Record daily notes • See progress at a glance • Add beautiful widgets to your Home Screen Turn your time into a beautiful arc. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Memento Mori4 screens
ArcDay4 screens

Verdict

The call

The clearest difference is ads: Memento Mori at none against ArcDay's shown. On price, update cadence, 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. Memento Mori sells 1 one-off in-app purchase and ArcDay sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Memento Mori ships an update weekly, ArcDay every 2 weeks. The most recent releases landed on October 28, 2026 and October 6, 2026 respectively.

Scorecard1 real difference · 9 level
Memento Mori versus ArcDay: the parameters behind the verdict, then further details
ParameterMemento MoriArcDay
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—1 — better
Update frequencyWeekly — betterEvery 2 weeks
AdsNo — betterYes
In-app purchasesYesYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size35 MB37 MB
Age rating4+4+
DeveloperRainbow Unicorn s.r.o.ChangHyun Nam

In-app purchases

1 purchases

Memento Mori

One-time1
  • Lifetime Premium$6.90
3 purchases

ArcDay

Subscriptions2
  • 메멘토 Pro (월간)$2.991 Month
  • Memento Pro Monthly$19.991 Year
One-time1
  • ArcDay Premium$0.99

Questions

Is Memento Mori free?
Memento Mori is free to download, with in-app purchases available.
Is ArcDay free?
ArcDay is free to download, with in-app purchases available.
Do Memento Mori or ArcDay have ads?
ArcDay shows ads; Memento Mori does not.
Which is updated more often, Memento Mori or ArcDay?
Memento Mori ships an update weekly, and ArcDay every 2 weeks. Most recently, Memento Mori was updated on October 28, 2026 and ArcDay on October 6, 2026.

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