# Simple Moon Phase Calendar vs SpinVane

The clearest difference is price: Simple Moon Phase Calendar at Free against SpinVane's $1.99. SpinVane's advantage is in-app purchases (none vs 2) and ads (none vs shown).

Simple Moon Phase Calendar is free to download; SpinVane costs $1.99 up front. Simple Moon Phase Calendar sells 2 one-off in-app purchases. SpinVane asks for nothing beyond the download.

Simple Moon Phase Calendar ships an update every 5 months, SpinVane daily. Both last shipped on October 24, 2026.

## The numbers

| Metric | Simple Moon Phase Calendar | SpinVane |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[4.8 (86 ratings)](https://appshunter.io/ios/app/simple-moon-phase-calendar/id1279710898/reviews)** | — |
| Number of ratings | **86** | — |
| Positive reviews | 65.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 36 MB | 10 MB |
| Requires iOS | 26.0 | **18.2** |
| Devices | iPhone | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Fumihiro Takahashi](https://appshunter.io/developer/1279710897) | [Yu Ikeda](https://appshunter.io/developer/394579323) |

## What reviewers say

### Simple Moon Phase Calendar

[App page](https://appshunter.io/ios/app/simple-moon-phase-calendar/id1279710898)

A straightforward calendar app displaying detailed lunar information for each date. It includes moon phase, age, distance, illumination, zodiac sign, and rise/set times. Features a note function, widgets, and customizable notifications for key lunar events and Mercury retrograde.

**Highlights:** Moon phase and age display, Lunar distance and illumination, Moon sign and constellation, Mercury retrograde tracking, Moonrise and moonset times, Note function, Widget support, Customizable notifications

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |
| Unlock | $1.99 | one-time |


### SpinVane

[App page](https://appshunter.io/ios/app/spinvane/id6745381092)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Simple Moon Phase Calendar free?

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

### Is SpinVane free?

SpinVane costs $1.99, with no in-app purchases.

### Do Simple Moon Phase Calendar or SpinVane have ads?

Simple Moon Phase Calendar shows ads; SpinVane does not.

### Which is updated more often, Simple Moon Phase Calendar or SpinVane?

Simple Moon Phase Calendar ships an update every 5 months, and SpinVane daily. Most recently, Simple Moon Phase Calendar was updated on October 24, 2026 and SpinVane on October 24, 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.*