# Solis vs Psychology

The clearest difference is in-app purchases: Solis at none against Psychology's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Psychology sells 1 one-off in-app purchase. Solis asks for nothing beyond the download.

Solis ships an update weekly, Psychology every 10 days. The most recent releases landed on October 9, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Solis | Psychology |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/solis/id1092942876/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 10 days |
| Monetization | Free | — |
| Size | 95 MB | 211 MB |
| Requires iOS | 16.4 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Trung Bui](https://appshunter.io/developer/1150954868) | [Man Hung Sun](https://appshunter.io/developer/1471605573) |

## What reviewers say

### Solis

[App page](https://appshunter.io/ios/app/solis/id1092942876)

Explore feng shui and horoscope utilities to understand your destiny, including ngũ hành, cung phi, and auspicious colors for life and vehicles. Get detailed yearly horoscopes and learn feng shui principles.

**Highlights:** Ngũ hành and cung phi identification, Auspicious color selection, Vehicle color recommendations, Detailed yearly horoscopes, Feng shui knowledge base

**Features:** macOS Compatibility

**In-app purchases:** none


### Psychology

[App page](https://appshunter.io/ios/app/psychology-creative/id6444853685)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| upgrade | $0.99 | one-time |


## Frequently asked questions

### Is Solis free?

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

### Is Psychology free?

Psychology is free to download, with in-app purchases available.

### Do Solis or Psychology have ads?

Neither Solis nor Psychology shows ads.

### Which is updated more often, Solis or Psychology?

Solis ships an update weekly, and Psychology every 10 days. Most recently, Solis was updated on October 9, 2026 and Psychology on September 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.*