Comparison

Total Solar Eclipses vs Monad Calendar Clock

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Total Solar Eclipses

Explore detailed information on solar and lunar eclipses from 1900 to 2100. Visualize eclipse paths on Earth maps, watch animations, and check visibility from any location.

Highlights
  • Eclipse data 1900-2100
  • Solar and lunar eclipse details
  • Universal Time eclipse phase timings
  • Geographical coordinates for observation
  • Earth Map, Movie, and Google Map visualization
  • Observer coordinate adjustment
  • Eclipse visibility prediction
Features
Read full description

Total and Total-annular solar eclipses processed by the program are comprised between 1900 and 2100, exactly 287 eclipses from 28th May 1900 to 4th September 2100. The program also shows partial solar eclipses and lunar eclipses. The program gives the times in Universal Time of the Solar eclipse phases (initial, central and final) and the geographical coordinates from where it is possible to observe those circumstances of the eclipse. It also gives maximum duration and the width of the lunar umbra. Below Path of the Umbra are listed Longitude and Latitude of seven point of the lunar umbra path on the Earth surface. The program has a few functions: Earth Map, Movie and Google Map visualization. The first allows seeing a few points of the path of the lunar umbra on Earth surface; the second creates an animation:  the user will see the eclipse from one hour before up to one hour after its maximum phase with step of 2 minutes; the third function allows to visualize Google Map of the area around the point where the eclipse reaches the maximum or that selected from the user. Moreover it is possible to change geographical coordinates of the observer. This allows knowing if and how the eclipse will be seen from other points of the Earth surface (e.g. it is possible to know if the eclipse will be partial or it does not occur for those coordinates). App in english version if iOS language is not set to italian.

About

Monad Calendar Clock

This app visualizes time through planetary and celestial movements, contrasting natural rhythms with mechanical time. It offers unique perspectives on Earth's position in space and time, showing star and planet locations, seasonal changes, and lunar phases.

Highlights
  • 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
Features
Read full description

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.

Screenshots

Total Solar Eclipses4 screens
Monad Calendar Clock4 screens

Verdict

The call

The clearest difference is rating: Monad Calendar Clock at 3.7 against Total Solar Eclipses's 3.4. Monad Calendar Clock also leads on update cadence (every 6 weeks vs every 4 months) and price ($0.99 vs $1.99). Total Solar Eclipses's advantage is review sentiment (43% vs 22%) and iOS requirement (11.0 vs 13.0). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Total Solar Eclipses costs $1.99 and Monad Calendar Clock $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Monad Calendar Clock holds the better App Store score, 3.7 against 3.4. Both are backed by a comparable volume of ratings — 5 and 14 respectively. Written reviews complicate that: 43% of Total Solar Eclipses's written reviews are positive against 22% of Monad Calendar Clock's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Total Solar Eclipses ships an update every 4 months, Monad Calendar Clock every 6 weeks. The most recent releases landed on October 31, 2026 and November 4, 2026 respectively.

Scorecard5 real differences · 5 level
Total Solar Eclipses versus Monad Calendar Clock: the parameters behind the verdict, then further details
ParameterTotal Solar EclipsesMonad Calendar Clock
Price$1.99$0.99 — better
Rating3.4 (5 ratings)3.7 (14 ratings) — better
Positive reviews42.9% of reviews — better22.2% of reviews
Number of ratings514 — better
Update frequencyEvery 4 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better13.0
Further details — not scored
Size101 MB266 MB
Age rating4+4+
DeveloperPietro MassiminoEarth at the Center LLC

Customer experience

Total Solar Eclipses

All ratings5 ratings
Positive60.0%
Neutral0.0%
Negative40.0%
Written reviews7 reviews
Positive42.9%
Neutral0.0%
Negative57.1%

Monad Calendar Clock

All ratings14 ratings
Positive64.3%
Neutral7.1%
Negative28.6%
Written reviews9 reviews
Positive22.2%
Neutral11.1%
Negative66.7%

In-app purchases

None

Total Solar Eclipses

No in-app purchases

None

Monad Calendar Clock

No in-app purchases

Questions

Is Total Solar Eclipses free?
Total Solar Eclipses costs $1.99, with no in-app purchases.
Is Monad Calendar Clock free?
Monad Calendar Clock costs $0.99, with no in-app purchases.
Which has better reviews, Total Solar Eclipses or Monad Calendar Clock?
Monad Calendar Clock is rated higher. Total Solar Eclipses averages 3.4 out of 5 from 5 ratings, while Monad Calendar Clock averages 3.7 from 14 ratings.
Do Total Solar Eclipses or Monad Calendar Clock have ads?
Neither Total Solar Eclipses nor Monad Calendar Clock shows ads.
Which is updated more often, Total Solar Eclipses or Monad Calendar Clock?
Total Solar Eclipses ships an update every 4 months, and Monad Calendar Clock every 6 weeks. Most recently, Total Solar Eclipses was updated on October 31, 2026 and Monad Calendar Clock on November 4, 2026.

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