# Planetary vs Yin·Yang

The clearest difference is rating: Planetary at 5.0 against Yin·Yang's 3.7. Planetary also leads on price ($0.99 vs $1.99). Yin·Yang's advantage is update cadence (every 2 months vs every 18 months) and review sentiment (67% vs 40%). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

Planetary costs $0.99 and Yin·Yang $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Planetary holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 4 and 3 respectively. Written reviews complicate that: 40% of Planetary's written reviews are positive against 67% of Yin·Yang's, so the app with the better star average is not the one people write more warmly about.

Planetary ships an update every 18 months, Yin·Yang every 2 months. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Planetary | Yin·Yang |
| --- | --- | --- |
| Price | **$0.99** | $1.99 |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/planetary-k-index/id1475622148/reviews)** | [3.7 (3 ratings)](https://appshunter.io/ios/app/yinyang/id1591073224/reviews) |
| Number of ratings | **4** | 3 |
| Positive reviews | 40.0% of reviews | **66.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 18 months | **Every 2 months** |
| Monetization | Paid | Paid |
| Size | 50 MB | 137 MB |
| Requires iOS | 16.4 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Alexander Frascona](https://appshunter.io/developer/1454433888) | [Beijing Ningdom Technology Co., Ltd.](https://appshunter.io/developer/434217018) |

## What reviewers say

### Planetary

[App page](https://appshunter.io/ios/app/planetary-k-index/id1475622148)

Monitor the current Planetary K-Index with a simple, intuitive interface. Log your personal experiences and sensations related to Kp readings in a private journal. Share Kp graph images and your notes with others.

**Highlights:** Real-time K-Index monitoring, Personal Kp effect journaling, Kp graph sharing, Tap to zoom and inspect graphs, Note-taking and review, Native iPhone sharing

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

**In-app purchases:** none


### Yin·Yang

[App page](https://appshunter.io/ios/app/yinyang/id1591073224)

Find inner peace and tranquility through mindful breathing exercises. This app guides you to a calmer state of being. Discover a sense of balance and well-being.

**Highlights:** Mindful breathing exercises, Inner peace guidance, Seek tranquility, Balance and well-being, Calming state

**In-app purchases:** none


## Frequently asked questions

### Is Planetary free?

Planetary costs $0.99, with no in-app purchases.

### Is Yin·Yang free?

Yin·Yang costs $1.99, with no in-app purchases.

### Which has better reviews, Planetary or Yin·Yang?

Planetary is rated higher. Planetary averages 5.0 out of 5 from 4 ratings, while Yin·Yang averages 3.7 from 3 ratings.

### Do Planetary or Yin·Yang have ads?

Neither Planetary nor Yin·Yang shows ads.

### Which is updated more often, Planetary or Yin·Yang?

Planetary ships an update every 18 months, and Yin·Yang every 2 months. Most recently, Planetary was updated on October 29, 2026 and Yin·Yang on October 30, 2026.

---

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