# Firevault vs Knowledge Base

The clearest difference is in-app purchases: Knowledge Base at none against Firevault's 2. Knowledge Base also leads on ads (none vs shown). Firevault's advantage is device support (3 vs 1) and iOS requirement (18.2 vs 26.4). On price and update cadence there is nothing between them.

Both are free to download. Firevault sells 2 in-app purchases, starting at $0.99 per month. Knowledge Base asks for nothing beyond the download.

Firevault ships an update every 2 weeks, Knowledge Base weekly. The most recent releases landed on October 7, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Firevault | Knowledge Base |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.4 (5 ratings)](https://appshunter.io/ios/app/firevault-personal-database/id1439389822/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 47.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 43 MB | 9 MB |
| Requires iOS | **18.2** | 26.4 |
| Devices | **iPhone, iPad, Mac** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [GACHANET](https://appshunter.io/developer/403879493) | [CHANG CHIA-WEI](https://appshunter.io/developer/1804812181) |

## What reviewers say

### Firevault

[App page](https://appshunter.io/ios/app/firevault-personal-database/id1439389822)

Organize and manage diverse personal information, from collections and hobbies to business data. Features hierarchical indexing, customizable templates, and PDF export for permanent preservation. Seamless iCloud synchronization and collaboration options are available.

**Highlights:** Personal database management, Hierarchical indexing, Customizable templates, PDF export, iCloud synchronization, File sharing and collaboration

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Firevault Premium Monthly Plan | $0.99 | per month |
| Firevault Premium Yearly Plan | $10.49 | per year |


### Knowledge Base

[App page](https://appshunter.io/ios/app/knowledge-base-second-brain/id6785236967)

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

**In-app purchases:** none


## Frequently asked questions

### Is Firevault free?

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

### Is Knowledge Base free?

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

### Do Firevault or Knowledge Base have ads?

Firevault shows ads; Knowledge Base does not.

### Which is updated more often, Firevault or Knowledge Base?

Firevault ships an update every 2 weeks, and Knowledge Base weekly. Most recently, Firevault was updated on October 7, 2026 and Knowledge Base on October 8, 2026.

---

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