# StarMap 3D+ Plus vs ReactionAtlas

The clearest difference is price: ReactionAtlas at Free against StarMap 3D+ Plus's $2.99. On ads, in-app purchases, device support and iOS requirement there is nothing between them.

ReactionAtlas is free to download; StarMap 3D+ Plus costs $2.99 up front. StarMap 3D+ Plus sells 1 one-off in-app purchase and ReactionAtlas sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | StarMap 3D+ Plus | ReactionAtlas |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[4.8 (6.9K ratings)](https://appshunter.io/ios/app/starmap-3d-plus-plus/id351986992/reviews)** | — |
| Number of ratings | **6.9K** | — |
| Positive reviews | 86.1% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | — |
| Monetization | Free with in-app purchases | — |
| Size | 576 MB | 60 MB |
| Requires iOS | **16.6** | 17.0 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Sanville Software](https://appshunter.io/developer/324038410) | [Xiangqian Liu](https://appshunter.io/developer/6784624826) |

## 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


### ReactionAtlas

[App page](https://appshunter.io/ios/app/reactionatlas/id6792311020)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ReactionAtlas Pro | $7.99 | one-time |


## Frequently asked questions

### Is StarMap 3D+ Plus free?

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

### Is ReactionAtlas free?

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

### Do StarMap 3D+ Plus or ReactionAtlas have ads?

Neither StarMap 3D+ Plus nor ReactionAtlas shows ads.

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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.*