# Day & Night Map vs 卫星云图

The clearest difference is rating: Day & Night Map at 4.8 against 卫星云图's 4.2. Day & Night Map also leads on ads (none vs shown) and ratings volume (1.4K vs 183). 卫星云图's advantage is update cadence (monthly vs every 7 months) and iOS requirement (15.6 vs 17.6). On price, review sentiment, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Day & Night Map holds the better App Store score, 4.8 against 4.2. That said, the two scores are not equally well evidenced: Day & Night Map has 1.4K ratings behind it against 183, so its average is the more settled of the two. Written reviews point the same way: 76% of Day & Night Map's written reviews are positive against 70% of 卫星云图's.

Day & Night Map ships an update every 7 months, 卫星云图 monthly. The most recent releases landed on October 14, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Day & Night Map | 卫星云图 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (1.4K ratings)](https://appshunter.io/ios/app/day-and-night-map/id741375889/reviews)** | [4.2 (183 ratings)](https://appshunter.io/ios/app/id1286499485/reviews) |
| Number of ratings | **1.4K** | 183 |
| Positive reviews | **76.3% of reviews** | 70.4% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 7 months | **Monthly** |
| Monetization | Free | — |
| Size | 48 MB | 83 MB |
| Requires iOS | 17.6 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Volker Voecking Software Engineering](https://appshunter.io/developer/390175341) | [健 陈](https://appshunter.io/developer/1129782902) |

## What reviewers say

### Day & Night Map

[App page](https://appshunter.io/ios/app/day-and-night-map/id741375889)

Visualize the Earth's day and night cycles on an interactive world map. Select any date and time to see current illumination, or create animated GIFs of changing light patterns.

**Highlights:** Real-time day/night map, Selectable date and time, Animated GIF creation, Minute-by-minute updates, Global illumination visualization

**In-app purchases:** none

**What reviewers like**

- 👍 Great app
- 🚀 Useful for radio hams
- 👍 Interesting to see sun/moon movement
- 👍 Excellent for travelers

**What reviewers complain about**

- 🐛 Widget issues (doesn't update, resizing)
- 🐛 Crashes on some devices

**Reported bugs**

- Moon position not displayed on iPad
- Daylight savings time not working properly

**Requested features**

- Option to keep noon at center and have map move
- Show analemma and sun position on it
- 24-hour clock setting for widget
- Improve moon position display on iPad


### 卫星云图

[App page](https://appshunter.io/ios/app/id1286499485)

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

**In-app purchases:** none


## Frequently asked questions

### Is Day & Night Map free?

Day & Night Map is free to download, with no in-app purchases.

### Is 卫星云图 free?

卫星云图 is free to download, with no in-app purchases.

### Which has better reviews, Day & Night Map or 卫星云图?

Day & Night Map is rated higher. Day & Night Map averages 4.8 out of 5 from 1.4K ratings, while 卫星云图 averages 4.2 from 183 ratings.

### Do Day & Night Map or 卫星云图 have ads?

卫星云图 shows ads; Day & Night Map does not.

### Which is updated more often, Day & Night Map or 卫星云图?

Day & Night Map ships an update every 7 months, and 卫星云图 monthly. Most recently, Day & Night Map was updated on October 14, 2026 and 卫星云图 on October 16, 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.*