# StarMap 3D+ Plus vs What's Up?

The clearest difference is price: What's Up? at Free against StarMap 3D+ Plus's $2.99. What's Up? also leads on in-app purchases (none vs 1) and iOS requirement (12.5 vs 16.6). StarMap 3D+ Plus's advantage is review sentiment (86% vs 58%) and ratings volume (6.9K vs 8). On ads and device support there is nothing between them.

What's Up? is free to download; StarMap 3D+ Plus costs $2.99 up front. StarMap 3D+ Plus sells 1 one-off in-app purchase. What's Up? asks for nothing beyond the download.

StarMap 3D+ Plus holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: StarMap 3D+ Plus has 6.9K ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 86% of StarMap 3D+ Plus's written reviews are positive against 58% of What's Up?'s.

StarMap 3D+ Plus ships an update every 5 weeks, What's Up? every 3 months. The most recent releases landed on October 28, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | StarMap 3D+ Plus | What's Up? |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[4.8 (6.9K ratings)](https://appshunter.io/ios/app/starmap-3d-plus-plus/id351986992/reviews)** | [4.6 (8 ratings)](https://appshunter.io/ios/app/whats-up/id393023070/reviews) |
| Number of ratings | **6.9K** | 8 |
| Positive reviews | **86.1% of reviews** | 57.9% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 3 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 576 MB | 49 MB |
| Requires iOS | 16.6 | **12.5** |
| Devices | iPhone, iPad, Apple Watch | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Sanville Software](https://appshunter.io/developer/324038410) | [John Kennedy](https://appshunter.io/developer/284943103) |

## What reviewers say

### StarMap 3D+ Plus

[App page](https://appshunter.io/ios/app/starmap-3d-plus-plus/id351986992)

Explore the cosmos with a portable star atlas. Identify planets, constellations, and deep sky objects using your device's sensors. Features detailed information and 3D visualizations for both beginners and advanced astronomers.

**Highlights:** Real-time satellite tracking (ISS, Hubble), Extensive star and deep sky object database, Detailed constellation information and lines, Location-based celestial object identification, 3D universe visualization, Adjustable date and time for celestial viewing

**Features:** macOS Compatibility, Apple Watch app, iMessage stickers

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| More Stars | $1.99 | one-time |

**What reviewers like**

- 🌟 Excellent star mapping and identification
- 🔍 Detailed information on celestial objects
- 👍 Easy to use and navigate
- 🔭 Helpful for amateur astronomers
- 🌍 Works well across locations

**What reviewers complain about**

- 🐛 Occasional tracking/alignment issues
- 🔍 Lack of detailed instructions/guides
- 🔒 Privacy concerns regarding data collection
- 🎨 Dislike for cartoon-style constellation art

**Reported bugs**

- App crashes or freezes on launch
- Incorrect moon and planet positioning
- Inconsistent performance after updates

**Requested features**

- More detailed deep sky object representations
- Improved tracking and compass accuracy
- Addition of educational content and tutorials
- Customization options for constellation art


### What's Up?

[App page](https://appshunter.io/ios/app/whats-up/id393023070)

Discover celestial bodies visible in the night sky with this intuitive app. Easily track planets, the Sun, and Moon, and forecast their appearance. Access detailed information and moon phases, with support for the Southern Hemisphere.

**Highlights:** Simple sky grid display, Effortless navigation, Time-bar functionality, Comprehensive celestial information, Observation insights, Moon phases, Wikipedia links

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is StarMap 3D+ Plus free?

StarMap 3D+ Plus costs $2.99, and also offers in-app purchases.

### Is What's Up? free?

What's Up? is free to download, with no in-app purchases.

### Which has better reviews, StarMap 3D+ Plus or What's Up??

StarMap 3D+ Plus is rated higher. StarMap 3D+ Plus averages 4.8 out of 5 from 6.9K ratings, while What's Up? averages 4.6 from 8 ratings.

### Do StarMap 3D+ Plus or What's Up? have ads?

Neither StarMap 3D+ Plus nor What's Up? shows ads.

### Which is updated more often, StarMap 3D+ Plus or What's Up??

StarMap 3D+ Plus ships an update every 5 weeks, and What's Up? every 3 months. Most recently, StarMap 3D+ Plus was updated on October 28, 2026 and What's Up? on October 23, 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.*