# Solar Watch vs EclipseTimesCalc

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.

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.

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.

## The numbers

| Metric | Solar Watch | EclipseTimesCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (114 ratings)](https://appshunter.io/ios/app/solar-watch/id1321127425/reviews)** | — |
| Number of ratings | **114** | — |
| Positive reviews | 78.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Free with in-app purchases | — |
| Size | 39 MB | 5 MB |
| Requires iOS | **18.0** | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Zuzana Eskinasi](https://appshunter.io/developer/926491439) | [robert hawley](https://appshunter.io/developer/1567295439) |

## What reviewers say

### Solar Watch

[App page](https://appshunter.io/ios/app/solar-watch/id1321127425)

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:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Version | $5.99 | per 6 months |
| Premium Version | $11.99 | one-time |


### EclipseTimesCalc

[App page](https://appshunter.io/ios/app/eclipsetimescalc/id1567295437)

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

**In-app purchases:** none


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*