# Binary Geek Clock vs Emerald Observatory for iPad

The clearest difference is price: Emerald Observatory for iPad at Free against Binary Geek Clock's $0.99. Emerald Observatory for iPad also leads on rating (4.9 vs 4.3) and ratings volume (95 vs 3). On ads, in-app purchases, monetization model and device support there is nothing between them.

Emerald Observatory for iPad is free to download; Binary Geek Clock costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Emerald Observatory for iPad holds the better App Store score, 4.9 against 4.3. That said, the two scores are not equally well evidenced: Emerald Observatory for iPad has 95 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 80% of Binary Geek Clock's written reviews are positive against 99% of Emerald Observatory for iPad's.

Binary Geek Clock ships an update every 12 months, Emerald Observatory for iPad every 5 months. The most recent releases landed on October 9, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Binary Geek Clock | Emerald Observatory for iPad |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [4.3 (3 ratings)](https://appshunter.io/ios/app/binary-geek-clock/id297643122/reviews) | **[4.9 (95 ratings)](https://appshunter.io/ios/app/emerald-observatory-for-ipad/id364904759/reviews)** |
| Number of ratings | 3 | **95** |
| Positive reviews | 80.0% of reviews | **98.6% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 5 months** |
| Monetization | Paid | Paid |
| Size | 1 MB | 16 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | **iPhone, iPad** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [8 Bit Code](https://appshunter.io/developer/297643125) | [Bjorn Freeman-Benson](https://appshunter.io/developer/1766829089) |

## What reviewers say

### Binary Geek Clock

[App page](https://appshunter.io/ios/app/binary-geek-clock/id297643122)

This app displays the current time in binary format, offering standard or real binary options. It can also function as a desk clock and includes a hexadecimal display for a unique time-telling experience.

**Highlights:** Standard and Real binary display, Desk clock mode, 12/24 hour time format, Hexadecimal clock option, Digital time display, Power of 2 indicator

**Features:** macOS Compatibility

**In-app purchases:** none


### Emerald Observatory for iPad

[App page](https://appshunter.io/ios/app/emerald-observatory-for-ipad/id364904759)

This app provides a comprehensive astronomical display on a single screen, offering detailed information about celestial bodies and timekeeping. It features a heliocentric orrery, rise and set times, twilight information, and moon phase details. Users can navigate through time and set alarms for astronomical events.

**Highlights:** Astronomical information display, Heliocentric orrery, Rise and set times for Sun, Moon, planets, Twilight times, Moon phase and orientation, World map of day/night regions, Eclipse simulator

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

**In-app purchases:** none

**What reviewers like**

- ✨ Visually stunning and beautiful design
- 💡 Extremely informative and data-rich
- 👍 Elegant and exquisite user interface
- 🚀 Flawless UX and intuitive design
- 🌟 Unique and nonpareil functionality

**What reviewers complain about**

- ⏳ Last update a year ago
- 🤔 Interface can be tough to decipher initially
- 🔄 Lack of recent updates
- 📱 Not available on iPhone/Apple Watch

**Requested features**

- Port to screen wallpaper
- Large wall clock version
- Apple TV version
- Support for Uranus, Neptune, and Pluto
- iPhone and Apple Watch versions


## Frequently asked questions

### Is Binary Geek Clock free?

Binary Geek Clock costs $0.99, with no in-app purchases.

### Is Emerald Observatory for iPad free?

Emerald Observatory for iPad is free to download, with no in-app purchases.

### Which has better reviews, Binary Geek Clock or Emerald Observatory for iPad?

Emerald Observatory for iPad is rated higher. Binary Geek Clock averages 4.3 out of 5 from 3 ratings, while Emerald Observatory for iPad averages 4.9 from 95 ratings.

### Do Binary Geek Clock or Emerald Observatory for iPad have ads?

Neither Binary Geek Clock nor Emerald Observatory for iPad shows ads.

### Which is updated more often, Binary Geek Clock or Emerald Observatory for iPad?

Binary Geek Clock ships an update every 12 months, and Emerald Observatory for iPad every 5 months. Most recently, Binary Geek Clock was updated on October 9, 2026 and Emerald Observatory for iPad on October 22, 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.*