# Armillary Sphere vs Eclipse Explorer

The clearest difference is update cadence: Eclipse Explorer at every 5 days against Armillary Sphere's every 5 months. Armillary Sphere's advantage is review sentiment (86% vs 67%) and ratings volume (6 vs 1). On price, rating, ads and in-app purchases there is nothing between them.

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

On the App Store both sit at effectively the same score — 4.0 for Armillary Sphere against 4.0 for Eclipse Explorer. That said, the two scores are not equally well evidenced: Armillary Sphere has 6 ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 86% of Armillary Sphere's written reviews are positive against 67% of Eclipse Explorer's.

Armillary Sphere ships an update every 5 months, Eclipse Explorer every 5 days. Both last shipped on June 1, 2026.

## The numbers

| Metric | Armillary Sphere | Eclipse Explorer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (6 ratings)](https://appshunter.io/ios/app/armillary-sphere/id1225026601/reviews) | [4.0 (1 ratings)](https://appshunter.io/ios/app/eclipse-explorer/id1252295023/reviews) |
| Number of ratings | **6** | 1 |
| Positive reviews | **85.7% of reviews** | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 5 days** |
| Monetization | Free | Free |
| Size | 275 MB | 47 MB |
| Requires iOS | **9.0** | 10.3 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [HKU TELI](https://appshunter.io/developer/1153931100) | [Joshua Berlin](https://appshunter.io/developer/1252295022) |

## What reviewers say

### 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


### Eclipse Explorer

[App page](https://appshunter.io/ios/app/eclipse-explorer/id1252295023)

Explore solar eclipses with detailed circumstances for your location between 1900 and 2100. Features countdown timers, Sun and Moon simulations, and real-time shadow mapping. Overlay weather data to avoid clouds during totality.

**Highlights:** Location-based eclipse circumstances (1900-2100), Countdown timers to eclipse events, Sun and Moon position simulation, Real-time Moon shadow mapping, Satellite and radar weather overlays, Offline map functionality

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Armillary Sphere free?

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

### Is Eclipse Explorer free?

Eclipse Explorer is free to download, with no in-app purchases.

### Which has better reviews, Armillary Sphere or Eclipse Explorer?

Armillary Sphere and Eclipse Explorer are both rated 4.0 out of 5 on the App Store, from 6 and 1 ratings respectively.

### Do Armillary Sphere or Eclipse Explorer have ads?

Neither Armillary Sphere nor Eclipse Explorer shows ads.

### Which is updated more often, Armillary Sphere or Eclipse Explorer?

Armillary Sphere ships an update every 5 months, and Eclipse Explorer every 5 days. Most recently, Armillary Sphere was updated on June 1, 2026 and Eclipse Explorer on June 1, 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.*