# D vs Momento

The clearest difference is in-app purchases: D at none against Momento's 1. D also leads on device support (3 vs 1). Momento's advantage is update cadence (weekly vs every 3 months). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Momento sells 1 one-off in-app purchase. D asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for D against 5.0 for Momento. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

D ships an update every 3 months, Momento weekly. Both last shipped on October 10, 2026.

## The numbers

| Metric | D | Momento |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/d-day-countdown/id1518400866/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/momento-countdown-days/id6745718742/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | Free | Free |
| Size | 7 MB | 12 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Si-Wan Yoon](https://appshunter.io/developer/1493152910) | [Srinivasan Rajendran](https://appshunter.io/developer/1505513932) |

## What reviewers say

### D

[App page](https://appshunter.io/ios/app/d-day-countdown/id1518400866)

Easily set and track important dates, such as D-Day. This utility app helps you monitor the remaining time until your specified events.

**Highlights:** Set D-Day, Check remaining time, Event tracking, Simple interface

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### Momento

[App page](https://appshunter.io/ios/app/momento-countdown-days/id6745718742)

Track important life events with unlimited, beautifully designed countdowns and home screen widgets. Organize your moments with tags and a dedicated section for past events, all without any paywalls or restrictions.

**Highlights:** Unlimited countdown events, Beautiful free widgets, Stunning design with gradients and emojis, Smart organization with tags, Past events section, Automatic date sorting

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Lifetime Access | $4.99 | one-time |


## Frequently asked questions

### Is D free?

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

### Is Momento free?

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

### Which has better reviews, D or Momento?

D and Momento are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do D or Momento have ads?

Neither D nor Momento shows ads.

### Which is updated more often, D or Momento?

D ships an update every 3 months, and Momento weekly. Most recently, D was updated on October 10, 2026 and Momento on October 10, 2026.

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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.*