# CubO3 vs Notebook

The clearest difference is in-app purchases: CubO3 at none against Notebook's 1. CubO3 also leads on ads (none vs shown). Notebook's advantage is update cadence (every 3 weeks vs every 22 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Notebook sells 1 in-app purchase, starting at $2.99 per 7 days. CubO3 asks for nothing beyond the download.

CubO3 ships an update every 22 months, Notebook every 3 weeks. The most recent releases landed on September 10, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | CubO3 | Notebook |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (523 ratings)](https://appshunter.io/ios/app/notebook-notes-and-journal/id1670365742/reviews)** |
| Number of ratings | — | **523** |
| Positive reviews | — | 70.6% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 22 months | **Every 3 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 20 MB | 73 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BYB Tech](https://appshunter.io/developer/1524533536) | [Solitude Colors](https://appshunter.io/developer/1614422096) |

## What reviewers say

### CubO3

[App page](https://appshunter.io/ios/app/cubo3/id1536713464)

**Features:** macOS Compatibility

**In-app purchases:** none


### Notebook

[App page](https://appshunter.io/ios/app/notebook-notes-and-journal/id1670365742)

Organize your thoughts, plans, and ideas with a versatile notebook and list-making application. Create unlimited notes, manage tasks with checklists, and customize your workspace. Sync across devices for seamless access to your organized information.

**Highlights:** Unlimited notes and lists, Folders and organization tools, Rich text editing, Checklists and to-do lists, Cloud sync and backup, Quick search and tags

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $2.99 | per 7 days |

**What reviewers like**

- 👍 Easy to use
- 💡 Great organization system
- 🚀 Simple and quick
- 🤩 Excellent AI-powered features

**What reviewers complain about**

- 🐛 Occasional crashes and freezes
- 💸 Excessive ads disrupting usage
- 🔒 Lack of customization options
- 🤯 Confusing navigation

**Reported bugs**

- Login issues and lost user data
- Compatibility problems with older devices
- Copying and pasting not working as expected

**Requested features**

- Add search functionality
- Improve delete/edit options
- Provide subscription-free version
- Enhance calendar integration


## Frequently asked questions

### Is CubO3 free?

CubO3 is free to download, with no in-app purchases.

### Is Notebook free?

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

### Do CubO3 or Notebook have ads?

Notebook shows ads; CubO3 does not.

### Which is updated more often, CubO3 or Notebook?

CubO3 ships an update every 22 months, and Notebook every 3 weeks. Most recently, CubO3 was updated on September 10, 2026 and Notebook on September 21, 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.*