# JS.Notebook vs Start Chat With Unsaved Number

The clearest difference is ads: JS.Notebook at none against Start Chat With Unsaved Number's shown. JS.Notebook also leads on monetization model (free vs ad-supported). Start Chat With Unsaved Number's advantage is update cadence (every 2 months vs every 50 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

JS.Notebook ships an update every 50 months, Start Chat With Unsaved Number every 2 months. The most recent releases landed on October 3, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | JS.Notebook | Start Chat With Unsaved Number |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/jsnotebook/id1470144639/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 50 months | **Every 2 months** |
| Monetization | **Free** | Ad-supported |
| Size | 19 MB | 17 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Zijie Deng](https://appshunter.io/developer/1070117038) | [VIHLIX LIMITED](https://appshunter.io/developer/1484786711) |

## What reviewers say

### JS.Notebook

[App page](https://appshunter.io/ios/app/jsnotebook/id1470144639)

Build, test, and run your JavaScript code directly on your iOS device. This utility allows you to execute scripts in widgets and even use your device as a host for computer browser code execution.

**Highlights:** Build JavaScript code, Test code at runtime, Run code in widgets, Use device as code host, Code execution in computer browser

**Features:** macOS Compatibility

**In-app purchases:** none


### Start Chat With Unsaved Number

[App page](https://appshunter.io/ios/app/start-chat-with-unsaved-number/id1614059090)

Instantly message phone numbers found in images, screenshots, or text without saving them to your contacts. Supports popular messaging platforms like WhatsApp and WeChat.

**Highlights:** Extract phone numbers from images, Extract phone numbers from text, Start chats on WhatsApp, WeChat, Viber, No contact saving required, Message from posters and screenshots, Direct messaging without sign-in

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is JS.Notebook free?

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

### Is Start Chat With Unsaved Number free?

Start Chat With Unsaved Number is free to download, with no in-app purchases.

### Do JS.Notebook or Start Chat With Unsaved Number have ads?

Start Chat With Unsaved Number shows ads; JS.Notebook does not.

### Which is updated more often, JS.Notebook or Start Chat With Unsaved Number?

JS.Notebook ships an update every 50 months, and Start Chat With Unsaved Number every 2 months. Most recently, JS.Notebook was updated on October 3, 2026 and Start Chat With Unsaved Number on October 11, 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.*