# Monad Calendar Clock — The Planetary Calendar Clock

> Visualizes planetary time, celestial movements, and Earth's position in space and time. (iPhone/iPad app by Earth at the Center LLC.)

- Source: https://appshunter.io/ios/app/monad-calendar-clock/id1437026437 (this page in markdown: same URL + `.md`)
- Developer: [Earth at the Center LLC](https://appshunter.io/developer/1437026436)
- Category: Education
- Price: $0.99
- Rating: 3.70/5 from 14 App Store ratings · 9 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 266 MB
- Languages: American English
- Released: 2018-09-28
- Data updated: 2026-09-06
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/monad-calendar-clock/id1437026437/reviews.md

## What is Monad Calendar Clock?

MONAD does something that no other clock or calendar does; it tells the planetary time and date – the solar day, lunar month & seasonal year.  MONAD reveals your unique place (and perspective) in planet-centered space and time.  MONAD demonstrates the biorhythms of the Earth’s biosphere, and it integrates two types of time: 1) Natural time, which is cyclic, variable, and alive, with 2) Mechanical time, which is linear, highly regular, abstract and artificial. MONAD represents a paradigm shift of planetary proportions; A New Paradigm of Time

With MONAD, you see the natural rhythms of time­ proceeding in endless circles and spirals.  MONAD shows the location of the stars and planets; what’s visible at night from your location on Earth.  MONAD shows the progression of the four seasons and the phases of the Moon; the obliquity of the ecliptic and the Earth’s circle of illumination, and a Twilight Dial tells you the time of Sun rise and Sun set at any latitude and time of year.  MONAD shows the agricultural biorhythms of the Earth’s photosynthetic biosphere.  MONAD restores the Earth, and the Earth’s biorhythms and biosphere, back to the center of our collective attention and awareness.

With MONAD you see the Earth globe from an unusual perspective; the north (or south) polar axial perspective.  MONAD automatically places a time zone-spanning Hour Hand at your location on the globe, marking your longitude & latitude, and you see all 24 time zones, all around the globe at the same time, the whole world interconnected.

MONAD has four main Modes of operation.  Geocentric (Geo) Mode features planet Earth at the center of a time and date-telling, 3-dimensional celestial ring.  The algorithms and programming which drive all of the astronomical activity is based on a Sun-centered and highly accurate model of the solar system which you can access in Heliocentric (Helio) Mode.  Accelerate through time, into the past or future, and watch how the configuration of the solar system changes.  Shift back and forth from Geo to Helio Modes, and it’s easy to see how the two perspectives are related.  It’s easy to see how and why the planets have apparent retrograde activity from an Earth-centered perspective. There is so much to explore and learn in MONAD.

Astro Mode features a 2-dimensional Calendar-Clock face, which makes it possible to set the time by dragging the hour hand around the dial, or you can set the date by dragging the calendar band, or zodiac band, past the Sun’s meridian or date indicator fixed at noon at the top of the dial.  A Table at the top of the screen lists the precise location of the Sun, Moon and planets at any time and date, so basically this Astro screen is equivalent to an astronomy or astrology chart, at any moment in time. Astro Mode will eventually feature a Scientific Astrology Program and an Educational Astronomy Program.

Event Mode is where you record and schedule personal events, in the context of important and memorable planetary events we all share.  Color-coded Event Wedges are shown in the context of the 4 corners of a solar day (Sun rise, noon, Sun set & midnight), the 4 corners of a lunar month (full and dark Moon, waxing and waning half Moons), and the 4 corners of a seasonal year  (equinoxes & solstices).  Another unique feature of MONAD is that you can record events “in the Now,” which encourages more presence in your life.  

A Health Event Mode allows you to see your personal, endocrine biorhythms in the context of planetary biorhythms we all share.  The 24 hour circadian Calendar-Clock face is ideally suited to organize and display health events.  If you choose to have MONAD integrate with the Apple Health app (HealthKit); then health data (e.g. Sleep period and Steps) read from HealthKit is used for display within the MONAD app.

MONAD is beautiful, educational & transformative, and it will change the way you see the world around you, and your place within it.  MONAD – A New Paradigm of Time.

## Key features

- Planetary time and date display
- Celestial ring visualization
- Heliocentric and Geocentric modes
- Star and planet location tracking
- Seasonal and lunar phase progression
- Twilight and sunrise/sunset times
- Event scheduling

## Recent user reviews (9 of 9)

All indexed reviews: https://appshunter.io/ios/app/monad-calendar-clock/id1437026437/reviews.md

### 1/5 — Shame

*2024-05-24, version 0.11.5*

Unfortunately does not work only crashes when trying to open

### 1/5 — Not worth my money

*2024-05-13*

Still under development, not all advertised features ads available, difficult to understand, navigate etc. You cant understand what you’re seeing so it’s pretty, but worthless.

### 1/5 — Monad - what happened??

*2024-03-25, version 0.11.5*

This used to be an interesting and useful app. Now it crashes on loading, again and again ( iOS 16.7.x)?
Please fix.

### 3/5 — Great clock but

*2024-03-13*

Really needs option to advance time clockwise.  CCW doesn't work for me.

### 1/5 — App crashes on loading

*2024-01-11*

Can’t review this (and I want to given what I read about it) as it crashes about 5 seconds after opening. There’s the opening screen and then as soon as the next screen comes up it crashes.

### 1/5 — Waste of $

*2022-01-06*

Seems like a great idea. Won’t open

### 5/5 — Date

*2021-08-01*

It’s so cool i just wish you could manually enter a date.

### 1/5 — Don’t waste your money

*2020-05-12*

Thought it was gonna be a really cool way to look at my natal chart. And while it is a very cool visualization, it needs major work and improvements to be functional. You could probably get a better version for free online

### 5/5 — Monad

*2020-02-07*

Fantastic and unique / I’ve never even heard of this approach to our place in the heavens - so to speak - much less seen it visualized so beautifully and usefully. Wonderful.

## Frequently asked questions about Monad Calendar Clock

### What is Monad Calendar Clock?

Monad Calendar Clock visualizes time through planetary movements and celestial cycles, offering a unique perspective on Earth's place in space and time. It integrates natural, cyclic time with mechanical, linear time.

### What are the main modes in Monad Calendar Clock?

Monad Calendar Clock features four main modes: Geocentric (Geo) Mode, Heliocentric (Helio) Mode for solar system models, Astro Mode for calendar-clock functions and astronomy charts, and Event Mode for scheduling personal events.

### Does Monad Calendar Clock show star and planet locations?

Yes, Monad Calendar Clock shows the location of stars and planets visible from your location on Earth. It also displays the progression of seasons and lunar phases.

### What is the price of Monad Calendar Clock?

Monad Calendar Clock is a paid app, available for $0.99. This one-time purchase grants access to all its features.

### What devices is Monad Calendar Clock available on?

Monad Calendar Clock is supported on iPhone, iPad, and iPod. It is designed for iOS devices.

### How often is Monad Calendar Clock updated?

The latest version of Monad Calendar Clock is 0.13.6, last updated on August 31, 2025. Updates typically occur to improve functionality and add features.

### What is the age rating for Monad Calendar Clock?

Monad Calendar Clock has an age rating of 4+, making it suitable for young users and above. It is designed to be educational and visually engaging.

### Does Monad Calendar Clock have ads?

No, Monad Calendar Clock does not contain advertisements. As a paid application, it offers an ad-free experience for users.

## Version history (last 5 releases)

### 0.13.6 — 2025-08-31

* improved chakra mode

### 0.13.5 — 2025-07-10

* Improved orbit visual
* Fixed 2D Jupiter

### 0.13.4 — 2025-06-20

* fixed 2D touch drag bug
* aesthetic improvements

### 0.13.2 — 2025-03-11

* Enhanced tour
* Chakra Mode improvements

### 0.13.1 — 2025-02-09

* Updated tour - 3 new panels
* Updated Chakra mode

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## More apps by Earth at the Center LLC

- [Earth Clock Calendar](https://appshunter.io/ios/app/earth-clock-calendar/id1623275786)

All apps by Earth at the Center LLC: https://appshunter.io/developer/1437026436

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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 2026-09-06.*