Comparison

Days Alive vs Death Day Sim

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

Head to head
About

Days Alive

This app helps you track your life in days, from your birthdate to significant milestones like reaching your first hundred or ten thousand days. It can also remind you of these milestones and display the ages of up to 30 people in a colorful list.

Highlights
  • Track life in days
  • Milestone notifications
  • Calculate future day milestones
  • Display multiple ages
  • Colorful list view
Read full description

Days Alive simplifies the important task of measuring your life in days. Add your birthdate, and Days Alive takes it from there. Check when you'll reach your next hundred, thousand, or ten thousand days, or let it remind you with notifications. Add up to 30 people, and see everyone's ages at a glance in a colourful list view.

About

Death Day Sim

This app estimates your simulated death date based on lifestyle and health data, providing a real-time countdown. It uses actuarial data and risk factors to personalize your date, with all calculations stored locally on your device.

Highlights
  • Simulated death date calculation
  • Live countdown clock
  • Lifestyle and health factor adjustments
  • Local data storage
  • No account required
  • Recalculate death date
Features
Read full description

Death Day Sim calculates your simulated death date based on real statistical data and gives you a live countdown clock ticking down to that moment — down to the exact year, month, day, hour, minute, and second. Answer a few questions about your age, lifestyle, and health, and the app generates a personalized death date using actuarial life expectancy data and risk factor adjustments for things like smoking, alcohol use, exercise, diet, sleep, stress, and existing medical conditions. Once your date is set, the clock runs continuously in the background, always reminding you how much time you have left. Features include a live countdown clock updated every second, a fully local profile with no account or sign-up required, lifestyle and health-based calculations, and the ability to reset and recalculate at any time. All data is stored locally on your device and is never shared or uploaded. For entertainment purposes only. This app does not provide medical advice and the simulated death date is not a prediction of any real event.

Screenshots

Days Alive1 screens
Death Day Sim4 screens

Verdict

The call

The clearest difference is rating: Death Day Sim at 5.0 against Days Alive's 2.6. Death Day Sim also leads on update cadence (daily vs every 9 months). Days Alive's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, 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.

ReceptionRating · Positive reviews · Number of ratings

Death Day Sim holds the better App Store score, 5.0 against 2.6. That said, the two scores are not equally well evidenced: Days Alive has 8 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Days Alive ships an update every 9 months, Death Day Sim daily. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

Scorecard6 real differences · 4 level
Days Alive versus Death Day Sim: the parameters behind the verdict, then further details
ParameterDays AliveDeath Day Sim
PriceFreeFree
Rating2.6 (8 ratings)5.0 (1 ratings) — better
Positive reviews58.3% of reviews—
Number of ratings8 — better1
Update frequencyEvery 9 monthsDaily — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree — betterAd-supported
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS9.0 — better13.0
Further details — not scored
Size4 MB25 MB
Age rating4+12+
DeveloperSteve BarnesShawn Revels

Customer experience

Days Alive

All ratings8 ratings
Positive37.5%
Neutral0.0%
Negative62.5%
Written reviews12 reviews
Positive58.3%
Neutral8.3%
Negative33.3%

Death Day Sim

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Days Alive

No in-app purchases

None

Death Day Sim

No in-app purchases

Questions

Is Days Alive free?
Days Alive is free to download, with no in-app purchases.
Is Death Day Sim free?
Death Day Sim is free to download, with no in-app purchases.
Which has better reviews, Days Alive or Death Day Sim?
Death Day Sim is rated higher. Days Alive averages 2.6 out of 5 from 8 ratings, while Death Day Sim averages 5.0 from 1 ratings.
Do Days Alive or Death Day Sim have ads?
Death Day Sim shows ads; Days Alive does not.
Which is updated more often, Days Alive or Death Day Sim?
Days Alive ships an update every 9 months, and Death Day Sim daily. Most recently, Days Alive was updated on October 23, 2026 and Death Day Sim on October 24, 2026.

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