Simple Moon Phase Calendar vs SpinVane
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Simple Moon Phase Calendar
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.
- 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
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It is a simple moon phase calendar. Tap the date cell to display the detail screen. The data to display is the moon phase, moon age, distance, percent illuminated, moon sign , constellation, Mercury retrograde, moonrise and monnset etc. There is also a note function and Widget. You can notify on full moon, new moon, first quarter, last quarter, beginning and the end of Mercury retrograde.
SpinVane
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SpinVane is a lightweight wind direction app designed for Apple Watch. With a single tap, it shows you the current wind direction in real time—no extra steps, no distractions. Perfect for walks, golf, outdoor adventures, or those curious moments when you just want to know where the wind is blowing. Its clean, intuitive interface keeps things simple, so you can check the wind without missing a beat. Bring a smart little weather vane to your wrist with SpinVane.
Screenshots
Verdict
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).
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Simple Moon Phase Calendar | SpinVane |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 4.8 (86 ratings) — better | — |
| Positive reviews | 65.1% of reviews | — |
| Number of ratings | 86 — better | — |
| Update frequency | Every 5 months | Daily — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone | iPhone, iPad, Apple Watch — better |
| Requires iOS | 26.0 | 18.2 — better |
| Further details — not scored | ||
| Size | 36 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Fumihiro Takahashi | Yu Ikeda |
In-app purchases
Simple Moon Phase Calendar
- Remove Ads$1.99
- Unlock$1.99
SpinVane
No in-app purchases
Questions
Is Simple Moon Phase Calendar free?
Is SpinVane free?
Do Simple Moon Phase Calendar or SpinVane have ads?
Which is updated more often, Simple Moon Phase Calendar or SpinVane?
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