# Classic Sky Map 2 vs Armillary Sphere

The clearest difference is rating: Classic Sky Map 2 at 4.7 against Armillary Sphere's 4.0. Classic Sky Map 2 also leads on ratings volume (9.8K vs 6). Armillary Sphere's advantage is in-app purchases (none vs 1) and update cadence (every 5 months vs every 16 months). On price, ads and device support there is nothing between them.

Both are free to download. Classic Sky Map 2 sells 1 one-off in-app purchase. Armillary Sphere asks for nothing beyond the download.

Classic Sky Map 2 holds the better App Store score, 4.7 against 4.0. That said, the two scores are not equally well evidenced: Classic Sky Map 2 has 9.8K ratings behind it against 6, so its average is the more settled of the two. Written reviews complicate that: 76% of Classic Sky Map 2's written reviews are positive against 86% of Armillary Sphere's, so the app with the better star average is not the one people write more warmly about.

Classic Sky Map 2 ships an update every 16 months, Armillary Sphere every 5 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | Classic Sky Map 2 | Armillary Sphere |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (9.8K ratings)](https://appshunter.io/ios/app/classic-sky-map-2/id1137455038/reviews)** | [4.0 (6 ratings)](https://appshunter.io/ios/app/armillary-sphere/id1225026601/reviews) |
| Number of ratings | **9.8K** | 6 |
| Positive reviews | 75.9% of reviews | **85.7% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 5 months** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 69 MB | 275 MB |
| Requires iOS | 17.6 | **9.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [X04 Studios Inc.](https://appshunter.io/developer/510671181) | [HKU TELI](https://appshunter.io/developer/1153931100) |

## What reviewers say

### Classic Sky Map 2

[App page](https://appshunter.io/ios/app/classic-sky-map-2/id1137455038)

Explore the cosmos with an intuitive and beautiful sky map.  Easily identify stars, planets, and constellations by simply pointing your device at the sky.  Track celestial events and understand astronomical movements with time-lapse features.

**Highlights:** Live sky tracking, Interactive earth map, Time-lapse sky simulation, Beautiful constellation art, Celestial object search, Night vision mode

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version | $2.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 🚀 Straightforward and not cluttered with ads
- 🌟 Excellent for stargazing and learning about the night sky
- 🌍 Helpful ground references for locating celestial objects
- 🎓 Great educational tool for young astronomers

**What reviewers complain about**

- 🐛 Occasional calibration and alignment issues
- 🔍 Limited information on stars beyond just names
- 🌌 Can't see below the horizon
- 🗺️ Clumsy and unintuitive navigation at times
- 🔍 Small viewing area that makes it hard to see all the stars

**Reported bugs**

- Compass bearing is inaccurate
- Active tracking no longer works
- App becomes unusable after certain updates

**Requested features**

- Add information on comets, meteor showers, and other space events
- Provide an option to only show visible stars
- Improve search functionality to find planets, moons, and other objects not currently in the sky
- Offer a live tracking mode that updates in real-time


### Armillary Sphere

[App page](https://appshunter.io/ios/app/armillary-sphere/id1225026601)

Explore the cosmos with this 3D astronomical tool. Measure and record the positions and movements of celestial bodies, and determine sunrise/sunset times and day length. Reconstructs an ancient scientific instrument using modern technology.

**Highlights:** 3D astronomical model, Measure celestial positions, Record Sun and star movements, Determine sunrise/sunset times, Calculate day length, Adjustable Meridian, Equator, Horizon, Ecliptic, Altitude

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Classic Sky Map 2 free?

Classic Sky Map 2 is free to download, with in-app purchases available.

### Is Armillary Sphere free?

Armillary Sphere is free to download, with no in-app purchases.

### Which has better reviews, Classic Sky Map 2 or Armillary Sphere?

Classic Sky Map 2 is rated higher. Classic Sky Map 2 averages 4.7 out of 5 from 9.8K ratings, while Armillary Sphere averages 4.0 from 6 ratings.

### Do Classic Sky Map 2 or Armillary Sphere have ads?

Neither Classic Sky Map 2 nor Armillary Sphere shows ads.

### Which is updated more often, Classic Sky Map 2 or Armillary Sphere?

Classic Sky Map 2 ships an update every 16 months, and Armillary Sphere every 5 months. Most recently, Classic Sky Map 2 was updated on October 24, 2026 and Armillary Sphere on October 24, 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.*