# Carnets vs Happy

The clearest difference is in-app purchases: Carnets at none against Happy's 1. Happy's advantage is update cadence (weekly vs monthly) and rating (4.9 vs 4.6). On price, review sentiment, ads and chart position there is nothing between them.

Both are free to download. Happy sells 1 in-app purchase, starting at $19.99 per month. Carnets asks for nothing beyond the download.

Happy holds the better App Store score, 4.9 against 4.6. Both are backed by a comparable volume of ratings — 316 and 1K respectively. Written reviews complicate that: 78% of Carnets's written reviews are positive against 72% of Happy's, so the app with the better star average is not the one people write more warmly about.

Carnets ships an update monthly, Happy weekly. The most recent releases landed on October 17, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Carnets | Happy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (316 ratings)](https://appshunter.io/ios/app/carnets-jupyter/id1450994949/reviews) | **[4.9 (1K ratings)](https://appshunter.io/ios/app/happy-codex-and-claude-code-app/id6748571505/reviews)** |
| Number of ratings | 316 | **1K** |
| Positive reviews | **78.4% of reviews** | 71.6% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Weekly** |
| Monetization | **Free** | Free with in-app purchases |
| Best chart rank | #81 | **#80** |
| Size | 1.4 GB | 98 MB |
| Requires iOS | **14.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Nicolas Holzschuch](https://appshunter.io/developer/1450994948) | [Bulka, LLC](https://appshunter.io/developer/1677403762) |

## What reviewers say

### Carnets

[App page](https://appshunter.io/ios/app/carnets-jupyter/id1450994949)

**Currently charting:** #81 Top Free · Developer Tools (US App Store)

This app offers a standalone Jupyter notebook environment for creating and running code snippets, combining them with text and Markdown. It includes pre-installed scientific packages and allows for offline use, making it ideal for education and research.

**Highlights:** Standalone Jupyter notebook implementation, Embedded Python interpreter, Offline functionality, Pre-installed scientific packages, Supports Jupyterlab, Package installation via %pip, Notebook sharing and opening

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Excellent app for coding on iPad
- 👍 Convenient for learning and coding on the go
- 🚀 Works just like Jupyter Notebook on desktop
- 👍 Helpful for self-learning Python
- 👍 Useful for data science and machine learning

**What reviewers complain about**

- 🐛 Bugs and stability issues
- 🔋 Battery drain and overheating
- 🔒 Unauthorized access to photo library
- 🐛 Issues with importing certain libraries like SciPy and Scikit-learn

**Reported bugs**

- Crashes and freezes
- Issues with saving and loading notebooks
- Problems with running scripts and notebooks
- Incompatibility with newer iOS versions

**Requested features**

- Add support for SciPy, Scikit-learn, and other scientific computing libraries
- Improve file management and integration with cloud storage services
- Implement split-screen or multi-window support
- Add more keyboard shortcuts and customization options
- Improve error handling and provide more detailed error messages


### Happy

[App page](https://appshunter.io/ios/app/happy-codex-and-claude-code-app/id6748571505)

**Currently charting:** #80 Top Free · Developer Tools, #148 Top Grossing · Developer Tools (US App Store)

This app provides a secure mobile interface for AI coding assistants, allowing you to continue sessions and monitor progress from anywhere. It features end-to-end encryption and a zero-knowledge architecture for ultimate privacy. Seamlessly switch between desktop and mobile for uninterrupted AI coding.

**Highlights:** Seamless desktop and mobile session continuation, Push notifications for AI tasks, Offline access to conversation history, End-to-end encryption for code privacy, Real-time streaming of AI responses, Zero-knowledge architecture

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus Plus Monthly | $19.99 | per month |


## Frequently asked questions

### Is Carnets free?

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

### Is Happy free?

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

### Which has better reviews, Carnets or Happy?

Happy is rated higher. Carnets averages 4.6 out of 5 from 316 ratings, while Happy averages 4.9 from 1K ratings.

### Do Carnets or Happy have ads?

Neither Carnets nor Happy shows ads.

### Which is updated more often, Carnets or Happy?

Carnets ships an update monthly, and Happy weekly. Most recently, Carnets was updated on October 17, 2026 and Happy on October 16, 2026.

### Which is more popular, Carnets or Happy?

Carnets currently peaks at #81 in the App Store charts, and Happy at #80. Chart position reflects recent download velocity rather than total install base.

---

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