JS.Notebook vs Start Chat With Unsaved Number
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
JS.Notebook
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.
- Build JavaScript code
- Test code at runtime
- Run code in widgets
- Use device as code host
- Code execution in computer browser
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JS Notebook provides a creative way for you to build and try out your Javascript. - Build, test, and check your code at runtime. - Easily run your code in Widgets - Read code in computer browse, make the iOS device to be a host.
Start Chat With Unsaved Number
Instantly message phone numbers found in images, screenshots, or text without saving them to your contacts. Supports popular messaging platforms like WhatsApp and WeChat.
- 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
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Quickly extract phone numbers from images, screenshots, or text and start chatting without adding contacts! Just share an image, screenshot, or text with JC, and it will detect and list all phone numbers, letting you start a conversation on platforms like WhatsApp, WeChat, or Viber—no sign-in required! JC lets you message numbers straight from posters, ads, or screenshots from YouTube, TikTok, Reels, and more without saving them to your contacts. Say goodbye to cluttering your phonebook! We’re committed to making it easy for you to message any number directly. Your feedback helps us improve JC—rate and review us today!
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | JS.Notebook | Start Chat With Unsaved Number |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | 1 — better | — |
| Update frequency | Every 50 months | Every 2 months — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 14.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 19 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Zijie Deng | VIHLIX LIMITED |
Customer experience
JS.Notebook
Start Chat With Unsaved Number
In-app purchases
JS.Notebook
No in-app purchases
Start Chat With Unsaved Number
No in-app purchases
Questions
Is JS.Notebook free?
Is Start Chat With Unsaved Number free?
Do JS.Notebook or Start Chat With Unsaved Number have ads?
Which is updated more often, JS.Notebook or Start Chat With Unsaved Number?
Other comparisons
