# Emerald Geneva

> Complex mechanical watch simulator with advanced astronomical and clock complications. (iPhone/iPad app by Emerald Sequoia LLC.)

- Source: https://appshunter.io/ios/app/emerald-geneva/id347828665 (this page in markdown: same URL + `.md`)
- Developer: [Emerald Sequoia LLC](https://appshunter.io/developer/284953673)
- Category: Utilities, Entertainment
- Price: Free
- Rating: 5.00/5 from 30 App Store ratings · 26 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 44 MB
- Languages: English
- Released: 2009-12-29
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/emerald-geneva/id347828665/reviews.md

## What is Emerald Geneva?

This model of a complex mechanical watch contains many of the most complex "complications" found in real watches, plus refinements found nowhere else.  The displays maintain the look and feel of a real mechanical watch, but with considerably more complexity than possible in real mechanicals and with the time and location accuracy of a modern computer.

Free for a limited time!  Geneva is just one of 14 watches included in our other apps, Emerald Chronometer and Emerald Chronometer HD.

Astronomy features:
- Highly accurate data from 4000 BCE to 2800 CE
- Times of sunrise, sunset, moonrise, and moonset
- Superior moonphase indicator
- Relative positions of the Sun, Moon, and the constellations of the zodiac
- Solar time and sidereal time
- Eclipse predictor (lunar node indicators and separation indicator)
- User settable geographic location and timezone using an 80,000-city database

Clock features:
- Day/date/month/year indicators
- Day of the week, season and fully-general leap year indicators
- Local and UTC time
- 1/5 sec precision (18000 bph)
- Synchronized with standard atomic clocks via NTP

Play with it by tapping on the crown and moving the hands, or press and hold on a date window to zoom through time to see the effect on the heavens.  Then just use it to show you when it's time for a break.

A complete description of each application feature can be found in the built-in Help screens and on the Emerald Sequoia LLC Web Site, which also includes a demo movie of Emerald Chronometer.

If you are having any trouble with the application whatsoever, please see our FAQ on the support page listed below and then contact us through that page if your problem is not resolved. We take pride in responding promptly to all support email requests.

(NTP time synchronization requires network access.  Like all other iOS apps, Emerald Geneva cannot set the device's internal clock.)

## Key features

- Advanced astronomical data (4000 BCE - 2800 CE)
- Sunrise, sunset, moonrise, moonset times
- Superior moonphase indicator
- Sun, Moon, and zodiac constellation positions
- Eclipse predictor
- User-settable location and timezone
- Day, date, month, year indicators
- 1/5 sec precision timekeeping

## Recent user reviews (10 of 26)

All indexed reviews: https://appshunter.io/ios/app/emerald-geneva/id347828665/reviews.md

### 5/5 — Beyond Great

*2023-01-26, version 3.10.1*

One-of-kind app. From this watch & time nerd, I think this is thee best app in its category. If they make it compatible with Apple Watch I might actually buy one of those things.
Truly exceptional work. Thank you!

### 5/5 — Like this app

*2022-03-23, version 3.10.1*

This is a neat app.  I have one
 suggestion:  make the second hand luminous or at least not black in the night view mode - my old eyes have trouble seeing it!

### 5/5 — My Dream Watch

*2020-09-28, version 3.9.8*

I absolutely adore this timepiece. I’ve been looking for a watch/clock like this for a long time and this is definitely the one. If I could, I’d rate 100 stars 🤣 To all timekeepers and astronomers-THIS APP IS A MUST HAVE

### 5/5 — Exceptional and Extraordinary !!!

*2018-12-30, version 3.9.6*

I’ve never been impressed like that before, this app and the work put into it is simply extraordinary and exceptional, this app will certainly be my best app/friend companion from now on, thank you very much to the scientists and developers behind it!

### 5/5 — Nice and interesting app

*2018-10-14, version 3.9.5*

This is a nice and interesting app, i just wish the developer would create a ‘face’ for the Apple Watch based on it.

### 5/5 — Fantastic

*2018-04-05, version 3.9.1*

Absolutely beautiful. I use this a lot, as a professional astronomer and for my own interest.

### 5/5 — Best Watch Ever!

*2018-03-02, version 3.9.5*

I wish I could strap the Geneva to my wrist, but having it on my iPhone (for free!) is good enough.

### 5/5 — Cool Stuff.

*2018-02-09, version 3.9.5*

This is the essential tool kit for time.  

Kinda on the “BUSY” side, as it’s presented as a “watch”, but all good info and pretty too.

### 5/5 — eighty

*2016-03-15, version 3.9.1*

FIRST CLASS!!! worth buying the iphone just for this app.  well played!

### 5/5 — Outstanding!

*2015-11-08, version 3.9.1*

A real winner for any watch collector, or anyone who needs to set the time regularly. Many advanced horological functions, including moon phase and sidereal time! There are not a lot of watches you can't set completely with this brilliant app.

## Frequently asked questions about Emerald Geneva

### What does Emerald Geneva do?

Emerald Geneva is a highly complex simulation of a mechanical watch. It goes beyond the capabilities of real-world mechanical watches, offering advanced astronomical features like eclipse prediction and precise celestial body positioning, alongside detailed clock functions such as day, date, and month indicators.

### What are the key features of Emerald Geneva?

Key features include highly accurate astronomical data from 4000 BCE to 2800 CE, times for sunrise, sunset, moonrise, and moonset, a superior moonphase indicator, and the relative positions of the Sun, Moon, and zodiac constellations. It also provides solar and sidereal time, an eclipse predictor, and user-settable geographic location and timezone.

### Is Emerald Geneva free to use?

Yes, Emerald Geneva is currently available for free for a limited time. It is also featured as one of the watches within other apps from the developer, Emerald Chronometer and Emerald Chronometer HD.

### What devices is Emerald Geneva compatible with?

While the description doesn't explicitly list device models, it mentions NTP time synchronization requires network access and that it's an iOS app. Like other iOS apps, it cannot set the device's internal clock.

### How can I interact with the watch simulation?

You can interact with the watch by tapping on the crown to move the hands. Pressing and holding on a date window allows you to zoom through time to observe the effect on the heavens. This interactive feature lets you explore the app's capabilities and see how celestial events change over time.

## Version history (last 2 releases)

### 3.11.1 — 2023-09-03

Startup warning about Emerald Sequoia shutdown.

### 3.10.1 — 2021-11-07

- Support for Dark Mode
- Support for iOS 15

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## More apps by Emerald Sequoia LLC

- [Emerald Time](https://appshunter.io/ios/app/emerald-time/id290384375)
- [Emerald Observatory for iPad](https://appshunter.io/ios/app/emerald-observatory-for-ipad/id364904759)
- [Emerald Timestamp](https://appshunter.io/ios/app/emerald-timestamp/id371935298)
- [Emerald Chronometer HD](https://appshunter.io/ios/app/emerald-chronometer-hd/id435033000)

All apps by Emerald Sequoia LLC: https://appshunter.io/developer/284953673

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*