Comparison

Solar Watch vs EclipseTimesCalc

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

Head to head
About

Solar Watch

Visualize the sun and moon's paths in augmented reality and on interactive 3D maps. Access detailed data tables for celestial events, shadow simulations, and more. Ideal for professionals and enthusiasts needing precise solar and lunar information.

Highlights
  • Augmented Reality solar and lunar path projection
  • Multifunctional 2D/3D map visualization
  • Comprehensive data tables for celestial events
  • Interactive 3D shadow simulator
  • Sunrise, sunset, golden hour, and dusk times
  • Lunar phases and moonrise/moonset times
Features
Read full description

Solar Watch is an essential digital tool for e.g. photographers, architects, prospective house buyers, garden enthusiasts and installers of solar panels. The intuitive, sleek interface provides access to a comprehensive range of professional functionalities. SOLAR and LUNAR PATH IN AR Augmented Reality projection of the position of the sun and moon at your current location. MULTIFUNCTIONAL MAP PRESENTATION Extensive 2D and 3D visualization of the solar and lunar path, compass mode and shadow simulator. You can see at a glance which side of a building gets the most hours of sunlight per day. DATA TABLES A comprehensive overview of sun positions, day and night lengths, sunrise and sunset times, golden hour and dusk (astronomical, nautical and civil). All solar eclipses, winter and summer solstices and equinoxes. All lunar eclipses, supermoon calendar, moon positions and visibility. Lunar phases, moonrise and moonset times. INTERACTIVE 3D SHADOW SIMULATOR Position a customizable 3D object on the map to have the app simulate its shadow at any time of year. No ads! The free version of the app shows all information about solar and lunar positions for your current time and location only. The paid Premium version of the app grants you access to global information for any time of year. Subscription: • Title: Full Version Subscription • Length of subscription: 6 months • Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal • Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase • Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable Terms and conditions: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy policy: https://apps.redwoods.eu/privacy

About

EclipseTimesCalc

Features
Read full description

This uses the algorithms developed over the past 150 years along with the best information available about the locations of sun, moon, and earth to predict when an eclipse will occur at a particular location on the earth. This is useful to find where to go, where to look, and how the moon will move across the sun. It also provides the sunrise/set times for the location

Screenshots

Solar Watch4 screens
EclipseTimesCalc4 screens

Verdict

The call

The clearest difference is in-app purchases: EclipseTimesCalc at none against Solar Watch's 2. Solar Watch's advantage is iOS requirement (18.0 vs 26.0). On price, update cadence, ads and device support 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

Both are free to download. Solar Watch sells 2 in-app purchases, starting at $5.99 per 6 months. EclipseTimesCalc asks for nothing beyond the download.

UpkeepUpdate frequency

Solar Watch ships an update every 2 months, EclipseTimesCalc every 4 months. The most recent releases landed on September 28, 2026 and September 15, 2026 respectively.

Scorecard2 real differences · 8 level
Solar Watch versus EclipseTimesCalc: the parameters behind the verdict, then further details
ParameterSolar WatchEclipseTimesCalc
PriceFreeFree
Rating4.8 (114 ratings) — better—
Positive reviews78.4% of reviews—
Number of ratings114 — better—
Update frequencyEvery 2 months — betterEvery 4 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.0 — better26.0
Further details — not scored
Size39 MB5 MB
Age rating4+4+
DeveloperZuzana Eskinasirobert hawley

In-app purchases

2 purchases

Solar Watch

Subscriptions1
  • Premium Version$5.996 Months
One-time1
  • Premium Version$11.99
None

EclipseTimesCalc

No in-app purchases

Questions

Is Solar Watch free?
Solar Watch is free to download, with in-app purchases available.
Is EclipseTimesCalc free?
EclipseTimesCalc is free to download, with no in-app purchases.
Do Solar Watch or EclipseTimesCalc have ads?
Neither Solar Watch nor EclipseTimesCalc shows ads.
Which is updated more often, Solar Watch or EclipseTimesCalc?
Solar Watch ships an update every 2 months, and EclipseTimesCalc every 4 months. Most recently, Solar Watch was updated on September 28, 2026 and EclipseTimesCalc on September 15, 2026.

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