JavaScript Manual vs hexJapality
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
JavaScript Manual
An offline, ad-free guide to JavaScript, covering its core guide, built-in objects, and Web API. Access comprehensive documentation without an internet connection.
- JavaScript guide
- Built-in objects
- Web API documentation
- Offline access
- Ad-free experience
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JavaScript Manual - Complete Offline Reference Your go-to companion for JavaScript development. Read everything from ES6+ basics to Web APIs anytime, anywhere - fully offline. Three core modules: - JavaScript Guide: variables, functions, closures, async/await, prototypes and modern ES6+ syntax - Built-in Objects: Array, Object, String, Number, Date, RegExp, Map, Set, Promise and more, with methods and examples - Web API: DOM, Fetch, Storage, Canvas, WebSocket and browser interfaces Why developers love it: - 100% offline - all content stored on your device - Zero ads - clean, distraction-free reading - Lightweight and fast - built for quick lookups Perfect for learning, coding reference, interview prep, and offline study. Questions or feedback? Contact: devspera@outlook.com
hexJapality
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hexJapality is a mobile hex viewer and binary inspection toolbox for developers, students, and technical users who need to explore files at the byte level. Open local files on your device, move through offsets, and view bytes in HEX, DEC, OCT, or BIN with printable ASCII alongside the raw data. Select any byte to inspect common interpretations including unsigned integers, signed integers, floats, binary, hex, and ASCII. Built-in tools help you understand file structure faster: • Edit individual bytes with undo and redo before saving • Search for text or exact hex byte patterns • View file size, MD5, and SHA-256 • Detect common formats such as PNG, JPEG, PDF, ZIP, ELF, and GIF • Explore entropy and byte distribution maps • Scan for readable strings and jump to offsets • Add bookmarks for important locations • Compare two files with Binary Diff • Export bytes as a C array, Rust array, hex string, or Base64 Privacy: Files you open are processed on your device. We do not upload your file contents to our servers. Free version: The app is free to download and may display ads. You can subscribe to Remove Ads (monthly or yearly) in Settings to enjoy an ad-free experience while your subscription is active. Payment is charged to your Apple ID. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel in your Apple ID subscription settings. Restore purchases is available in the app. Use responsibly: You are responsible for files you open, edit, or export. Always back up important data before editing. Terms of Use (EULA): https://app.japality.com/hexjapality/i/terms_of_use/ Privacy Policy: https://app.japality.com/hexjapality/i/privacy_policy/ Support: https://app.japality.com/hexjapality/i/support/ hexJapality is provided by Japality Limited (Hong Kong). Designed for quick checks and byte-level inspection on mobile.
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Verdict
The clearest difference is in-app purchases: JavaScript Manual at none against hexJapality's 2. JavaScript Manual also leads on ads (none vs shown). hexJapality's advantage is update cadence (every 2 months vs every 31 months) and iOS requirement (13.0 vs 15.0). On price and device support 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. hexJapality sells 2 in-app purchases, starting at $1.99 per month. JavaScript Manual asks for nothing beyond the download.
JavaScript Manual ships an update every 31 months, hexJapality every 2 months. The most recent releases landed on September 20, 2026 and October 3, 2026 respectively.
| Parameter | JavaScript Manual | hexJapality |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 31 months | Every 2 months — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 34 MB | 44 MB |
| Age rating | 4+ | 4+ |
| Developer | Hua Yang | Japality Limited |
In-app purchases
JavaScript Manual
No in-app purchases
hexJapality
- Remove Ads (Monthly)$1.991 Month
- Remove Ads (Yearly)$9.991 Year
Questions
Is JavaScript Manual free?
Is hexJapality free?
Do JavaScript Manual or hexJapality have ads?
Which is updated more often, JavaScript Manual or hexJapality?
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