# sunClock World Map vs Black Memorial Day

The clearest difference is ads: sunClock World Map at none against Black Memorial Day's shown. Black Memorial Day's advantage is update cadence (every 4 days vs every 10 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. sunClock World Map sells 1 one-off in-app purchase and Black Memorial Day sells 4 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

sunClock World Map ships an update every 10 months, Black Memorial Day every 4 days. The most recent releases landed on September 29, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | sunClock World Map | Black Memorial Day |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.2 (5 ratings)](https://appshunter.io/ios/app/sunclock-world-map/id1578018980/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 10 months | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 8 MB | 23 MB |
| Requires iOS | 26.0 | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Stefan von Weihe](https://appshunter.io/developer/1493458328) | [Di Nerd Apps LLC](https://appshunter.io/developer/1464402590) |

## What reviewers say

### sunClock World Map

[App page](https://appshunter.io/ios/app/sunclock-world-map/id1578018980)

Visualize global night and day cycles on an equirectangular world map. Get sunrise, sunset, and weather data for any location. Tap the map to view specific place details.

**Highlights:** World map with night shade visualization, Sunrise and sunset times, Location-specific weather data, Tap to view individual location data, GPS location access for data

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| sunClock world map | $0.99 | one-time |


### Black Memorial Day

[App page](https://appshunter.io/ios/app/black-memorial-day/id6759682590)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove All Ads | $3.99 | per month |
| Small Tip | $0.99 | one-time |
| Medium Tip | $2.99 | one-time |
| Large Tip | $9.99 | one-time |


## Frequently asked questions

### Is sunClock World Map free?

sunClock World Map is free to download, with in-app purchases available.

### Is Black Memorial Day free?

Black Memorial Day is free to download, with in-app purchases available.

### Do sunClock World Map or Black Memorial Day have ads?

Black Memorial Day shows ads; sunClock World Map does not.

### Which is updated more often, sunClock World Map or Black Memorial Day?

sunClock World Map ships an update every 10 months, and Black Memorial Day every 4 days. Most recently, sunClock World Map was updated on September 29, 2026 and Black Memorial Day on October 31, 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.*