# 立極尺 vs AI Notebook

The clearest difference is review sentiment: AI Notebook at 46% against 立極尺's 0%. AI Notebook also leads on price (Free vs $39.99) and update cadence (every 9 days vs every 9 months). 立極尺's advantage is in-app purchases (none vs 11) and ads (none vs shown).

AI Notebook is free to download; 立極尺 costs $39.99 up front. AI Notebook sells 11 in-app purchases, starting at $9.99 per 7 days. 立極尺 asks for nothing beyond the download.

立極尺 ships an update every 9 months, AI Notebook every 9 days. The most recent releases landed on October 24, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | 立極尺 | AI Notebook |
| --- | --- | --- |
| Price | $39.99 | **Free** |
| Rating | — | **[4.6 (194 ratings)](https://appshunter.io/ios/app/ai-notebook-smart-note-taker/id6737346766/reviews)** |
| Number of ratings | — | **194** |
| Positive reviews | 0.0% of reviews | **46.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 9 months | **Every 9 days** |
| Monetization | — | Free with in-app purchases |
| Size | 29 MB | 127 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Suk Shan Yung](https://appshunter.io/developer/734469459) | [APTE Ltd](https://appshunter.io/developer/1675202009) |

## What reviewers say

### 立極尺

[App page](https://appshunter.io/ios/app/id1091561801)

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

**In-app purchases:** none


### AI Notebook

[App page](https://appshunter.io/ios/app/ai-notebook-smart-note-taker/id6737346766)

Transform your notes into actionable content. Record lectures, upload documents, or link web content to generate summaries, quizzes, and even podcasts. Ask AI questions about your materials to deepen understanding and create study guides or meeting minutes.

**Highlights:** Summarize documents, PDFs, videos, and web pages, Chat with your content to clarify concepts, Record and transcribe audio with speaker identification, Generate podcasts, infographics, and slides, Create study guides, quizzes, and flashcards, Organize notes with folders and search functionality

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $9.99 | per 7 days |
| Monthly | $19.99 | per month |
| Yearly | $39.99 | per year |
| Yearly | $69.99 | per year |
| Yearly Premium | $89.99 | per year |
| Yearly | $119.99 | per year |
| 10 Credits | $4.99 | one-time |
| 25 Credits | $9.99 | one-time |
| 55 Credits | $19.99 | one-time |
| 150 Credits | $49.99 | one-time |
| Lifetime Premium | $99.99 | one-time |

**What reviewers like**

- 👍 Good
- 👍 Effectively helped with course notes transcription
- 👍 Provides good summarization function
- 👍 Useful software
- 👍 Great note-taking tool

**What reviewers complain about**

- 🐛 AI unable to align with real-time
- 🐛 Generates nonsensical content
- 🐛 Recording and analysis not working
- 🐛 Sync issues between devices
- 🐛 Paid version has less functionality than free version

**Reported bugs**

- Recording not working
- Summarization not working
- Frequent crashes
- Incompatible with older devices

**Requested features**

- Ability to load files and images
- Cross-platform support (Mac, Web)
- Improved language support (multilingual)


## Frequently asked questions

### Is 立極尺 free?

立極尺 costs $39.99, with no in-app purchases.

### Is AI Notebook free?

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

### Do 立極尺 or AI Notebook have ads?

AI Notebook shows ads; 立極尺 does not.

### Which is updated more often, 立極尺 or AI Notebook?

立極尺 ships an update every 9 months, and AI Notebook every 9 days. Most recently, 立極尺 was updated on October 24, 2026 and AI Notebook on October 30, 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.*