# PhysicPro vs Sacred Knowledge Vault

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

Both are free to download. PhysicPro sells 1 in-app purchase, starting at $8.99 per year. Sacred Knowledge Vault asks for nothing beyond the download.

PhysicPro ships an update every 2 weeks, Sacred Knowledge Vault every 8 days. The most recent releases landed on October 24, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | PhysicPro | Sacred Knowledge Vault |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 8 days** |
| Monetization | — | Free |
| Size | 42 MB | 25 MB |
| Requires iOS | 16.4 | **15** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 9+ | 4+ |
| Developer | [Gentiana Etemi](https://appshunter.io/developer/1883027493) | [平 何](https://appshunter.io/developer/1630512266) |

## What reviewers say

### PhysicPro

[App page](https://appshunter.io/ios/app/physicpro-physics-toolkit/id6760918761)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PhysicPro Premium | $8.99 | per year |


### Sacred Knowledge Vault

[App page](https://appshunter.io/ios/app/sacred-knowledge-vault/id6792727759)

This AI tool offers a unique role-playing system with two knowledge base modes for private or public inquiries. It prioritizes user privacy by storing all conversation data locally and securely. Explore diverse topics with pre-built templates and manage your knowledge with built-in tools.

**Highlights:** Role-playing system with unique identities, Dual knowledge base modes (public & private), Local data storage for maximum privacy, Pre-built prompt templates (Wisdom Sparks), Conversation archiving and favorites, Encrypted API key storage

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

**In-app purchases:** none


## Frequently asked questions

### Is PhysicPro free?

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

### Is Sacred Knowledge Vault free?

Sacred Knowledge Vault is free to download, with no in-app purchases.

### Do PhysicPro or Sacred Knowledge Vault have ads?

Neither PhysicPro nor Sacred Knowledge Vault shows ads.

### Which is updated more often, PhysicPro or Sacred Knowledge Vault?

PhysicPro ships an update every 2 weeks, and Sacred Knowledge Vault every 8 days. Most recently, PhysicPro was updated on October 24, 2026 and Sacred Knowledge Vault on October 16, 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.*