Comparison

Assembly Compiler vs HeaderX

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

Assembly Compiler

Features
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App Name: Assembly Compiler - AI Learning Assistant Assembly Compiler - AI Learning Assistant β€” A mobile compilation and learning tool designed for students learning assembly language, reverse engineering enthusiasts, and low-level system developers. It integrates assembly code editing, compilation, and execution with an intelligent AI learning assistant, allowing you to write, debug, and analyze assembly programs anytime, anywhere on your iPhone and iPad. Core Features Code Compilation & Execution Built-in lightweight assembly simulation environment supporting ARM64, x86 (NASM style), MIPS and other mainstream instruction sets Assemble, link, and run code directly on iOS devices Real-time display of register states, memory contents, and program output Interactive debugging mode with step-by-step execution, stack frame inspection, and flag tracking AI-Powered Learning Assistant (Key Highlight) Built-in AI assistant answers questions about assembly instructions, addressing modes, calling conventions, and more Helps understand stack frame structure, interrupt calls, inline assembly, and low-level I/O principles Provides code optimization suggestions (e.g., reducing memory access, efficient register usage) "Explain current code block" feature for quickly understanding existing assembly logic Code Editing Experience Syntax highlighting for registers, instructions, pseudo-instructions, and labels Smart indentation and jump label hints Multi-file project management: .asm, .inc, .s files Built-in assembly code templates: System call output string (x86/Linux style) ARM64 basic loops and conditionals Stack frame examples and subroutine call conventions MIPS array traversal examples Learning Resources Assembly language tutorials (from registers to interrupts) Practice exercises and lab examples (string reversal, case conversion, bubble sort) Reverse engineering introductory examples (function call analysis, stack overflow basics) Assembly interview/exam question bank (for computer system fundamentals courses) Code saving and note-taking features to build a personal knowledge base Who Is This For? University computer science / embedded systems students (Computer Organization, Assembly Language, Operating Systems courses) Reverse engineering and binary security enthusiasts Exam candidates preparing for graduate school or certification (e.g., 408, soft exam) Embedded developers and BIOS/UEFI low-level developers Developers who want to understand "how high-level code translates to machine instructions" Easy to Use No registration required to start coding Save, import, and export code (.asm files) AirDrop and iCloud sync support for seamless multi-device switching Assembly language is the foundation for understanding computer architecture, operating systems, security, and high-performance code. Whether you're preparing for exams, practicing low-level algorithms, analyzing disassembled code, or getting started with reverse engineering, Assembly Compiler - AI Learning Assistant is your pocket-sized assembly lab. Subscription & Privacy Flexible subscription plans for every need! 1 Month – For short-term projects or intensive learning 1 Year – Lower unit price, ideal for long-term learning Lifetime – One-time purchase, permanent access to all features Auto-Renewal (excluding Lifetime): Payment will be charged to your iTunes Account upon confirmation Subscription cycles: monthly or yearly Auto-renewal occurs within 24 hours before the current period ends Manage subscriptions or disable auto-renewal anytime in Apple ID Account Settings Lifetime Membership Benefits: One-time purchase, permanently unlock all features – no worries about renewal Subscription Management Path: Settings > [Your Name] > Subscriptions Agreements Privacy Policy: https://docs.qq.com/doc/DRFZnV2JkVGVSUWVU Terms of Use: https://docs.qq.com/doc/DREdRb0VqQUFETVhq Apple EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Contact Us: hxx_shdt@126.com

About

HeaderX

Features
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HeaderX injects custom HTTP request headers into your Safari browsing session β€” the essential companion for web developers, API testers, and QA engineers. Point HeaderX at your development environment, define your headers once, and flip them on whenever you need them. No proxy setup, no configuration files, no leaving the browser. DEFINE HEADERS AS JSON Describe your headers in a simple JSON editor β€” paste an entire set at once: {"X-Debug-Mode": "enabled", "Authorization": "Bearer dev-token"} Or use the array format to keep headers saved but individually switched off. TWO VIEWS, ONE TOGGLE Edit as raw JSON or flip to List view, where every header gets its own checkbox. The master toggle in the corner turns everything on or off instantly β€” your configuration stays saved either way. REUSABLE PROFILES Save named header sets β€” one per project, environment, or test scenario β€” and switch between them in two clicks. FEATURES β€’ One-tap master toggle β€’ JSON editor and checkbox list views β€’ Per-header enable/disable β€’ Named profiles for quick switching β€’ Settings persist across browser restarts β€’ Works in Private Browsing (optional) GOOD TO KNOW Standard header names (Authorization, Accept-Language, User-Agent, and other HTTP-spec headers) are applied to all requests through Safari's native rule engine. Custom header names (X-My-Header and similar) are applied to fetch and XHR requests made by web pages β€” a Safari platform constraint on custom names in network rules. For typical API-debugging workflows, this covers exactly the requests you care about. Headers apply to every site while the toggle is on β€” remember to switch off when you're done testing, especially with authentication headers. PRIVACY FIRST Everything stays on your device. HeaderX collects no data, phones home to no one, and contains no analytics. What you configure is nobody's business but yours.

Screenshots

Assembly Compiler3 screens
HeaderX4 screens

Verdict

The call

The clearest difference is price: HeaderX at Free against Assembly Compiler's $5.99. HeaderX also leads on in-app purchases (none vs 3) and update cadence (every 8 days vs every 3 months). On ads there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

HeaderX is free to download; Assembly Compiler costs $5.99 up front. Assembly Compiler sells 3 in-app purchases, starting at $4.99 per month. HeaderX asks for nothing beyond the download.

UpkeepUpdate frequency

Assembly Compiler ships an update every 3 months, HeaderX every 8 days. Both last shipped on October 25, 2026.

Scorecard5 real differences Β· 1 level
Assembly Compiler versus HeaderX: the parameters behind the verdict, then further details
ParameterAssembly CompilerHeaderX
Price$5.99Free β€” better
Update frequencyEvery 3 monthsEvery 8 days β€” better
AdsNoNo
In-app purchasesYesNo β€” better
DevicesiPhone, iPadiPhone, iPad, iPod, Mac β€” better
Requires iOS17.615.0 β€” better
Further details β€” not scored
Size85 MB1 MB
Age rating4+4+
Developer乐η₯₯ 胑Gyuman Kim

In-app purchases

3 purchases

Assembly Compiler

Subscriptions2
  • 30ε€©δΌšε‘˜$4.991 Month
  • 360ε€©δΌšε‘˜$24.991 Year
One-time1
  • η»ˆθΊ«δΌšε‘˜$69.99
None

HeaderX

No in-app purchases

Questions

Is Assembly Compiler free?
Assembly Compiler costs $5.99, and also offers in-app purchases.
Is HeaderX free?
HeaderX is free to download, with no in-app purchases.
Do Assembly Compiler or HeaderX have ads?
Neither Assembly Compiler nor HeaderX shows ads.
Which is updated more often, Assembly Compiler or HeaderX?
Assembly Compiler ships an update every 3 months, and HeaderX every 8 days. Most recently, Assembly Compiler was updated on October 25, 2026 and HeaderX on October 25, 2026.

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