# Celestron SkyPortal vs sunClock World Map

The clearest difference is rating: Celestron SkyPortal at 3.6 against sunClock World Map's 2.2. Celestron SkyPortal also leads on in-app purchases (none vs 1) and review sentiment (32% vs 0%). On price, ads and device support there is nothing between them.

Both are free to download. sunClock World Map sells 1 one-off in-app purchase. Celestron SkyPortal asks for nothing beyond the download.

Celestron SkyPortal holds the better App Store score, 3.6 against 2.2. That said, the two scores are not equally well evidenced: Celestron SkyPortal has 354 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 32% of Celestron SkyPortal's written reviews are positive against 0% of sunClock World Map's.

Celestron SkyPortal ships an update every 3 months, sunClock World Map every 10 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Celestron SkyPortal | sunClock World Map |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.6 (354 ratings)](https://appshunter.io/ios/app/celestron-skyportal/id877780544/reviews)** | [2.2 (5 ratings)](https://appshunter.io/ios/app/sunclock-world-map/id1578018980/reviews) |
| Number of ratings | **354** | 5 |
| Positive reviews | **31.9% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 10 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 709 MB | 8 MB |
| Requires iOS | **18.6** | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Celestron, LLC](https://appshunter.io/developer/445142854) | [Stefan von Weihe](https://appshunter.io/developer/1493458328) |

## What reviewers say

### Celestron SkyPortal

[App page](https://appshunter.io/ios/app/celestron-skyportal/id877780544)

Explore the cosmos with a comprehensive astronomy suite. Discover stars, planets, and celestial events, and enhance your stargazing with detailed information and audio narration. Connect to compatible telescopes for automatic object location.

**Highlights:** Explore 120,000 stars and celestial objects, Simulate night sky past/future, Real-time sky synchronization, Control compatible WiFi telescopes, Animate celestial events, Audio narration and object descriptions, Night Vision mode

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

**In-app purchases:** none

**What reviewers like**

- 👍 Great app
- 🚀 Transforms stargazing
- 💡 Wonderful features
- 👍 Convenient control
- 👍 Incredible for free

**What reviewers complain about**

- 🐛 Alignment issues
- 🐛 Connectivity problems
- 🐛 Laggy controls
- 🐛 Inaccurate compass
- 🐛 Crashes and freezes

**Reported bugs**

- Fails to align telescope
- Telescope points in wrong direction
- Disconnects frequently
- Doesn't show deep sky objects
- Crashes on startup

**Requested features**

- Add red night mode
- Improve focus motor control
- Integrate weather data
- Provide RA/DEC coordinates
- Add more celestial objects


### 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 |


## Frequently asked questions

### Is Celestron SkyPortal free?

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

### Is sunClock World Map free?

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

### Which has better reviews, Celestron SkyPortal or sunClock World Map?

Celestron SkyPortal is rated higher. Celestron SkyPortal averages 3.6 out of 5 from 354 ratings, while sunClock World Map averages 2.2 from 5 ratings.

### Do Celestron SkyPortal or sunClock World Map have ads?

Neither Celestron SkyPortal nor sunClock World Map shows ads.

### Which is updated more often, Celestron SkyPortal or sunClock World Map?

Celestron SkyPortal ships an update every 3 months, and sunClock World Map every 10 months. Most recently, Celestron SkyPortal was updated on November 1, 2026 and sunClock World Map on November 3, 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.*