# Moon Phase Calendar Plus vs Solar System

The clearest difference is rating: Moon Phase Calendar Plus at 4.8 against Solar System's 3.7. Moon Phase Calendar Plus also leads on ratings volume (29K vs 3) and chart position (#146 vs unranked). Solar System's advantage is in-app purchases (none vs 6) and iOS requirement (15.0 vs 18.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Moon Phase Calendar Plus sells 6 in-app purchases, starting at $3.99 per month. Solar System asks for nothing beyond the download.

Moon Phase Calendar Plus holds the better App Store score, 4.8 against 3.7. That said, the two scores are not equally well evidenced: Moon Phase Calendar Plus has 29K ratings behind it against 3, so its average is the more settled of the two.

Moon Phase Calendar Plus ships an update every 8 days, Solar System weekly. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Moon Phase Calendar Plus | Solar System |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (29K ratings)](https://appshunter.io/ios/app/moon-phase-calendar-plus/id671352640/reviews)** | [3.7 (3 ratings)](https://appshunter.io/ios/app/solar-system-planet-guide/id1536272859/reviews) |
| Number of ratings | **29K** | 3 |
| Positive reviews | 86.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 8 days | **Weekly** |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#146** | — |
| Size | 53 MB | 127 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad, Vision Pro | iPhone, iPad, iPod |
| Age rating | 4+ | +4 |
| Developer | [Fascinating Projects](https://appshunter.io/developer/1689975869) | [Francesc Navarro Machio](https://appshunter.io/developer/488794379) |

## What reviewers say

### Moon Phase Calendar Plus

[App page](https://appshunter.io/ios/app/moon-phase-calendar-plus/id671352640)

**Currently charting:** #146 Top Grossing · Weather (US App Store)

Track the moon's phases with precise, real-time data for your location. View current moon appearance, moon rise/set times, and countdowns to upcoming phases. Plan lunar activities with detailed information and notifications.

**Highlights:** Precise lunar phase tracking, Current moon appearance simulation, Moon rise and set times, Countdown to next moon phase, Calendar view of moon phases, Moon Sign and distance, Notifications for lunar events

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $3.99 | per month |
| Monthly Subscription | $5.99 | per month |
| Yearly Subscription | $12.99 | per year |
| Yearly Subscription | $19.99 | per year |
| Enable Extra Notifications | $1.99 | one-time |
| Premium Upgrade | $19.99 | one-time |

**What reviewers like**

- 🌟 Accurate moon phase information
- 📍 Helpful location-based features
- 🔔 Useful notifications and alerts
- 🌙 Visually appealing moon graphics
- 🗓️ Detailed calendar of moon phases

**What reviewers complain about**

- 💰 Subscription/premium model
- 📢 Intrusive ads and pop-ups
- 🔒 Restricted access to features
- 🌐 Lack of multi-language support
- 🔄 Inconsistent user experience after updates

**Reported bugs**

- Freezing or crashing on certain devices
- Inaccurate moon phase display
- Inability to view future/past moon phases

**Requested features**

- Sync with calendar apps
- Astrological moon sign information
- Planting/gardening guides by moon phase
- One-time purchase option
- Customizable notification settings


### Solar System

[App page](https://appshunter.io/ios/app/solar-system-planet-guide/id1536272859)

Explore our solar system with detailed information on each planet. Discover their distance from Earth, density, and size. Zoom in to view intricate details of celestial bodies.

**Highlights:** Detailed planetary information, Distance from Earth, Density and size data, Zoomable planet views, Solar system exploration

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

**In-app purchases:** none


## Frequently asked questions

### Is Moon Phase Calendar Plus free?

Moon Phase Calendar Plus is free to download, with in-app purchases available.

### Is Solar System free?

Solar System is free to download, with no in-app purchases.

### Which has better reviews, Moon Phase Calendar Plus or Solar System?

Moon Phase Calendar Plus is rated higher. Moon Phase Calendar Plus averages 4.8 out of 5 from 29K ratings, while Solar System averages 3.7 from 3 ratings.

### Do Moon Phase Calendar Plus or Solar System have ads?

Neither Moon Phase Calendar Plus nor Solar System shows ads.

### Which is updated more often, Moon Phase Calendar Plus or Solar System?

Moon Phase Calendar Plus ships an update every 8 days, and Solar System weekly. Most recently, Moon Phase Calendar Plus was updated on October 28, 2026 and Solar System on October 24, 2026.

---

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