# KnowledgeBase Builder vs TeachAI

The clearest difference is price: TeachAI at Free against KnowledgeBase Builder's $8.99. TeachAI also leads on update cadence (every 4 days vs fortnightly). KnowledgeBase Builder's advantage is in-app purchases (none vs 9) and ratings volume (24 vs 3). On rating, ads, device support and iOS requirement there is nothing between them.

TeachAI is free to download; KnowledgeBase Builder costs $8.99 up front. TeachAI sells 9 in-app purchases, starting at $2.99 per 7 days. KnowledgeBase Builder asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.7 for KnowledgeBase Builder against 4.7 for TeachAI. That said, the two scores are not equally well evidenced: KnowledgeBase Builder has 24 ratings behind it against 3, so its average is the more settled of the two.

KnowledgeBase Builder ships an update fortnightly, TeachAI every 4 days. The most recent releases landed on September 28, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | KnowledgeBase Builder | TeachAI |
| --- | --- | --- |
| Price | $8.99 | **Free** |
| Rating | [4.7 (24 ratings)](https://appshunter.io/ios/app/knowledgebase-builder/id1448579863/reviews) | [4.7 (3 ratings)](https://appshunter.io/ios/app/teachai-ai-teaching-assistant/id6742711107/reviews) |
| Number of ratings | **24** | 3 |
| Positive reviews | 90.9% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 4 days** |
| Monetization | Paid | **Freemium** |
| Size | 21 MB | 46 MB |
| Requires iOS | **15.0** | 16 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ingo Straub](https://appshunter.io/developer/1398145160) | [旋炜 李](https://appshunter.io/developer/1513565202) |

## What reviewers say

### KnowledgeBase Builder

[App page](https://appshunter.io/ios/app/knowledgebase-builder/id1448579863)

Organize and search text documents and web pages with links within a mind map structure. Automatically create mind maps from text, import Wikipedia articles, and export your knowledge base as HTML. Also functions as a flowcharting tool.

**Highlights:** Save text documents and web pages, Full-text search, Organize with mind maps, Automatic mind map creation, Wikipedia import, Export to HTML, Flowcharting tool

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

**In-app purchases:** none


### TeachAI

[App page](https://appshunter.io/ios/app/teachai-ai-teaching-assistant/id6742711107)

This AI-powered assistant helps educators streamline tasks like lesson planning, grading, and student engagement. It offers tools for creating materials, generating quizzes, providing feedback, and even supporting parent communication. Designed for teachers from kindergarten to university, it aims to make education more efficient and effective.

**Highlights:** AI-powered lesson planning and material creation, Automated quiz generation and grading, Personalized student feedback and performance analysis, Classroom engagement tools and discussion prompts, Research and academic writing assistance, Kindergarten-specific activity planning and communication

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TeachAI Pro Week | $2.99 | per 7 days |
| TeachAI Pro Month | $7.99 | per month |
| TeachAI Pro Quarter | $20.99 | per 3 months |
| TeachAI Pro Year | $39.99 | per year |
| TeachAI Pro Year Off 30 | $49.99 | per year |
| TeachAI Pro Year Off 40 | $49.99 | per year |
| TeachAI Pro Gift Week | $0.69 | one-time |
| TeachAI Pro Gift Month | $1.99 | one-time |
| TeachAI Pro Lifetime | $99.99 | one-time |


## Frequently asked questions

### Is KnowledgeBase Builder free?

KnowledgeBase Builder costs $8.99, with no in-app purchases.

### Is TeachAI free?

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

### Which has better reviews, KnowledgeBase Builder or TeachAI?

KnowledgeBase Builder and TeachAI are both rated 4.7 out of 5 on the App Store, from 24 and 3 ratings respectively.

### Do KnowledgeBase Builder or TeachAI have ads?

Neither KnowledgeBase Builder nor TeachAI shows ads.

### Which is updated more often, KnowledgeBase Builder or TeachAI?

KnowledgeBase Builder ships an update fortnightly, and TeachAI every 4 days. Most recently, KnowledgeBase Builder was updated on September 28, 2026 and TeachAI on September 23, 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.*