# Planetary Guide vs Synastry

The clearest difference is price: Synastry at Free against Planetary Guide's $9.99. Planetary Guide's advantage is ads (none vs shown). On update cadence, in-app purchases, device support and iOS requirement there is nothing between them.

Synastry is free to download; Planetary Guide costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Planetary Guide ships an update weekly, Synastry every 6 days. The most recent releases landed on November 4, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Planetary Guide | Synastry |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | — | **[2.0 (1 ratings)](https://appshunter.io/ios/app/synastry-daily-transits/id6752854422/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Weekly | **Every 6 days** |
| Monetization | — | Ad-supported |
| Size | 7 MB | 15 MB |
| Requires iOS | **18.0** | 18.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Allyson Jane Bunting](https://appshunter.io/developer/1745521704) | [Tryfon Stergiou](https://appshunter.io/developer/1841345608) |

## What reviewers say

### Planetary Guide

[App page](https://appshunter.io/ios/app/planetary-guide/id6502454896)

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

**In-app purchases:** none


### Synastry

[App page](https://appshunter.io/ios/app/synastry-daily-transits/id6752854422)

This app analyzes your astrological birth chart and current planetary aspects to provide personalized, real-time cosmic insights. It notifies you of transits affecting your chart and explains their potential impact and duration. Designed for those already familiar with astrology, it offers a unique connection to the cosmos.

**Highlights:** Personalized birth chart analysis, Real-time planetary aspect tracking, Transit notifications, Explanation of transit meanings, Aspect duration details, Intuitive user interface

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Planetary Guide free?

Planetary Guide costs $9.99, with no in-app purchases.

### Is Synastry free?

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

### Do Planetary Guide or Synastry have ads?

Synastry shows ads; Planetary Guide does not.

### Which is updated more often, Planetary Guide or Synastry?

Planetary Guide ships an update weekly, and Synastry every 6 days. Most recently, Planetary Guide was updated on November 4, 2026 and Synastry on November 8, 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.*