# Proposal Writer 4 vs JS.Notebook

The clearest difference is update cadence: Proposal Writer 4 at every 9 months against JS.Notebook's every 50 months. On price, rating, ratings volume and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for Proposal Writer 4 against 5.0 for JS.Notebook. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Proposal Writer 4 ships an update every 9 months, JS.Notebook every 50 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Proposal Writer 4 | JS.Notebook |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/proposal-writer-4/id942538207/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/jsnotebook/id1470144639/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 months** | Every 50 months |
| Monetization | Free | Free |
| Size | 3 MB | 19 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Carlisle Construction Materials Incorporated](https://appshunter.io/developer/557896327) | [Zijie Deng](https://appshunter.io/developer/1070117038) |

## What reviewers say

### Proposal Writer 4

[App page](https://appshunter.io/ios/app/proposal-writer-4/id942538207)

This app helps roofing professionals conduct rooftop inspections and generate professional reports for clients. It allows for detailed documentation of roof conditions, features, and necessary repairs, streamlining the proposal process.

**Highlights:** Generate rooftop inspection reports, Capture and import photos, Import satellite imagery for site maps, Document rooftop conditions and repairs, Access suggested solutions, Include cover letters and specifications

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Proposal Writer 4 free?

Proposal Writer 4 is free to download, with no in-app purchases.

### Is JS.Notebook free?

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

### Which has better reviews, Proposal Writer 4 or JS.Notebook?

Proposal Writer 4 and JS.Notebook are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Proposal Writer 4 or JS.Notebook have ads?

Neither Proposal Writer 4 nor JS.Notebook shows ads.

### Which is updated more often, Proposal Writer 4 or JS.Notebook?

Proposal Writer 4 ships an update every 9 months, and JS.Notebook every 50 months. Most recently, Proposal Writer 4 was updated on November 1, 2026 and JS.Notebook on November 3, 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.*