# Viaskin vs Plum Oracle

The clearest difference is in-app purchases: Viaskin at none against Plum Oracle's 8. Viaskin also leads on ads (none vs shown) and iOS requirement (15.0 vs 17.0). Plum Oracle's advantage is update cadence (every 2 weeks vs every 23 months). On price and device support there is nothing between them.

Both are free to download. Plum Oracle sells 8 in-app purchases, starting at $0.99 per month. Viaskin asks for nothing beyond the download.

Viaskin ships an update every 23 months, Plum Oracle every 2 weeks. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Viaskin | Plum Oracle |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/plum-oracle-ai-i-ching/id6474019024/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 23 months | **Every 2 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 98 MB | 70 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [坤 杨](https://appshunter.io/developer/1590949449) | [Wonton Games](https://appshunter.io/developer/1383875506) |

## What reviewers say

### Viaskin

[App page](https://appshunter.io/ios/app/viaskin/id1631936764)

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

**In-app purchases:** none


### Plum Oracle

[App page](https://appshunter.io/ios/app/plum-oracle-ai-i-ching/id6474019024)

This app uses AI to interpret the ancient wisdom of the I Ching and Plum Blossom Numerology. It provides quick, accurate divination readings for various life aspects, offering clear guidance for decisions.

**Highlights:** AI-powered divination readings, I Ching and Plum Blossom Numerology, 30-second quick readings, Plain language I Ching translation, Simulated Yarrow stalk algorithm, Offline usage, Detailed life aspect analysis

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 免廣告版本 | $0.99 | per month |
| Yi Starter | $1.99 | per month |
| Yi Pro | $4.99 | per month |
| Yi Master | $9.99 | per month |
| 12個月 - 免廣告版本 | $9.99 | per year |
| Yi Starter - 12 month | $19.99 | per year |
| Yi Pro - 12 month | $49.99 | per year |
| Yi Master - 12 month | $99.99 | per year |


## Frequently asked questions

### Is Viaskin free?

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

### Is Plum Oracle free?

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

### Do Viaskin or Plum Oracle have ads?

Plum Oracle shows ads; Viaskin does not.

### Which is updated more often, Viaskin or Plum Oracle?

Viaskin ships an update every 23 months, and Plum Oracle every 2 weeks. Most recently, Viaskin was updated on November 3, 2026 and Plum Oracle on November 4, 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.*