Comparison

Death Clock vs Seize Week

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

Head to head
About

Death Clock

Features
Read full description

Death Clock - Mori is a calm life calendar and Stoic reflection app for remembering that time is limited. See your life as a calendar in weeks, follow an approximate countdown, and return each day to carefully chosen Stoic quotes. With widgets and Live Activities, Mori keeps perspective close without demanding attention. Features include: - Death clock and approximate countdown - Life calendar in weeks - Daily Stoic quotes - Reflection widgets and Live Activities - WHO-based life estimate as a rough approximation Mori Pro unlocks all features including the life calendar, death clock, daily quotes, widgets, and Live Activities. Mori is not medical advice and does not predict lifespan. The estimate is based on public WHO life-expectancy data and is meant only as a reflective tool. Terms of Use: https://silpho.com/apps/memento/terms Privacy Policy: https://silpho.com/apps/memento/privacy

About

Seize Week

Features
Read full description

Your whole life, drawn as a grid of weeks. The weeks you've lived are filled in; the weeks ahead are waiting. The end of the grid is not a fixed number. It is a live estimate that responds to your Apple Health trends, built to be illustrative rather than predictive. Most "life in weeks" apps show the same static grid to everyone. Seize Week moves. As your fitness, heart, sleep, and activity trends improve, weeks get added back to your grid. Let them slip, and you'll see that too. It is a clear way to see how today's habits move the estimate. HOW IT WORKS โ€ข Start from a national life table for your age, sex, and country. โ€ข Adjust it with evidence-based factors from your 90-day Apple Health trends โ€” VO2 max, resting heart rate, daily steps, sleep duration, exercise minutes, body measurements, and blood pressure โ€” plus a couple of things Health can't measure, like smoking and alcohol. โ€ข Every adjustment shows its source. Tap any factor to see the research behind it and how your own trend is moving. โ€ข Each week, your horizon updates. See exactly which habit moved it, and by how much. PRIVATE BY DESIGN โ€ข No account. No sign-up. No servers. โ€ข Your health data is read-only and never leaves your device. Only your estimate history syncs, through your own private iCloud. โ€ข Free with ads (CloudX); a one-time Remove Ads purchase turns them off. Your Health data is never used to target them. AN HONEST ESTIMATE Seize Week is a motivational visualization, not a medical prediction or health advice. Nobody knows your number. What this app shows is how your choices move the odds โ€” and how much of your life is still ahead of you. Carpe septimanam. Seize the week.

Screenshots

Death Clock4 screens
Seize Week4 screens

Verdict

The call

The clearest difference is in-app purchases: Seize Week at none against Death Clock's 2. Seize Week also leads on device support (3 vs 1). Death Clock's advantage is ads (none vs shown). On price, update cadence and iOS requirement 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. Death Clock sells 2 in-app purchases, starting at $4.99 per 7 days. Seize Week asks for nothing beyond the download.

UpkeepUpdate frequency

Death Clock ships an update every 3 weeks, Seize Week every 2 weeks. The most recent releases landed on September 25, 2026 and September 14, 2026 respectively.

Scorecard3 real differences ยท 3 level
Death Clock versus Seize Week: the parameters behind the verdict, then further details
ParameterDeath ClockSeize Week
PriceFreeFree
Update frequencyEvery 3 weeksEvery 2 weeks โ€” better
AdsNo โ€” betterYes
In-app purchasesYesNo โ€” better
DevicesiPhoneiPhone, iPad, Apple Watch โ€” better
Requires iOS17.0 โ€” better18.0
Further details โ€” not scored
Size12 MB35 MB
Age rating4+4+
DeveloperSilpho LLCsebastian totte

In-app purchases

2 purchases

Death Clock

Subscriptions1
  • Weekly Access3 Days trial$4.997 Days
One-time1
  • Lifetime Access$29.99
None

Seize Week

No in-app purchases

Questions

Is Death Clock free?
Death Clock is free to download, with in-app purchases available.
Is Seize Week free?
Seize Week is free to download, with no in-app purchases.
Do Death Clock or Seize Week have ads?
Seize Week shows ads; Death Clock does not.
Which is updated more often, Death Clock or Seize Week?
Death Clock ships an update every 3 weeks, and Seize Week every 2 weeks. Most recently, Death Clock was updated on September 25, 2026 and Seize Week on September 14, 2026.

Other comparisons