# Memento Mori vs Das Null

The clearest difference is in-app purchases: Das Null at none against Memento Mori's 5. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Memento Mori sells 5 one-off in-app purchases. Das Null asks for nothing beyond the download.

## The numbers

| Metric | Memento Mori | Das Null |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (22 ratings)](https://appshunter.io/ios/app/memento-mori-death-clock/id6738378679/reviews)** | — |
| Number of ratings | **22** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 32 MB | 2 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 17+ | 12+ |
| Developer | [Ramkumar Vellaisamy](https://appshunter.io/developer/1706335914) | [Rene Hilmar Deist](https://appshunter.io/developer/6806416199) |

## What reviewers say

### Memento Mori

[App page](https://appshunter.io/ios/app/memento-mori-death-clock/id6738378679)

This app provides a visual countdown of your remaining life, encouraging intentional living through daily reflection on mortality. It offers customizable life expectancy settings and home screen widgets to keep your progress visible.

**Highlights:** Life countdown in various units, Visual life progress grid, Home screen widgets, Customizable life expectancy, Daily Stoic reflection prompts

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Lifetime | Free | one-time |
| A Day of Impact | $2.99 | one-time |
| A Week of Support | $7.99 | one-time |
| A Month of Gratitude | $29.99 | one-time |
| A Year of Appreciation | $129.00 | one-time |


### Das Null

[App page](https://appshunter.io/ios/app/das-null-prinzip/id6806416197)

**In-app purchases:** none


## Frequently asked questions

### Is Memento Mori free?

Memento Mori is free to download, with in-app purchases available.

### Is Das Null free?

Das Null is free to download, with no in-app purchases.

### Do Memento Mori or Das Null have ads?

Neither Memento Mori nor Das Null shows ads.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*