Hew Playground vs HTML & Markdown Viewer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Hew Playground
Read full descriptionHide full description
Hew is a programming language built around actors -- lightweight, isolated processes that communicate through messages. If you've ever wondered what safe concurrency looks like without locks, mutexes, or data races, Hew is your answer. Hew Playground puts the full language on your iPhone or iPad. Write real programs in a proper code editor with syntax highlighting, auto-indent, brace matching, and a keyboard accessory bar for quick symbol access. The Hew compiler runs on-device via WebAssembly, so you get live error and warning underlines as you type -- no internet required. Long-press any identifier to see its type. When your code is ready, tap Run to execute it on the Hew server and see output instantly. LEARN FROM SCRATCH OR DIVE DEEP Whether you're new to programming or exploring actor-based concurrency for the first time, Hew Playground meets you where you are. - 12 interactive tutorials guide you from Hello World through actors, state machines, closures, and async/await - 13 built-in examples show real patterns: spawning actors, handling errors, matching enums, and more - 19 quick reference cards explain every syntax construct, each with a "Try It" button that loads the snippet into the editor - Full documentation from hew.sh is available in-app, with offline fallback A REAL DEVELOPMENT ENVIRONMENT - Context-aware autocomplete powered by the compiler - Save, rename, and organise programs across sessions - Import and export .hew files through the native file picker - Share code as text, as a hew.run link, or via the system share sheet - Cancel long-running programs with the Stop button - Unsaved changes protection and auto-save when backgrounded DESIGNED FOR EVERY DEVICE Hew Playground is optimised for iPad with a side-by-side editor and output pane connected by a resizable divider. It supports Dynamic Type, VoiceOver labels on all controls, and full keyboard navigation. Available in 11 languages. Hew is an actor-based programming language designed for safe, concurrent systems. Learn more at https://hew.sh
HTML & Markdown Viewer
This app renders AI-generated HTML, Markdown, and ZIP files locally. It supports JavaScript, CSS, diagrams, and tables, offering PDF and PNG export. All processing occurs on-device for enhanced privacy.
- Local HTML rendering
- Markdown viewing with Mermaid and tables
- ZIP file extraction and browsing
- PDF and PNG export
- Private on-device processing
- Import from various apps
Read full descriptionHide full description
Artifact Viewer opens AI-generated HTML, Markdown, and ZIP files — including JavaScript, CSS, Mermaid diagrams, and GFM tables — through a private local server for full compatibility. * AI Artifact Ready: Import from ChatGPT, Files, WeChat, Mail, and other apps. * Full Local Rendering: Everything runs on-device through a private HTTP server. * PDF & PNG Export: Export any view as PDF or the current screen as PNG. * ZIP Support: Extract and browse ZIP bundles with entry switching. * Markdown Viewer: Built-in template with Mermaid and table support. * Private by Design: All content stays in the app sandbox. Built for developers, researchers, and AI users who work with rich HTML artifacts.
Screenshots
Verdict
The clearest difference is iOS requirement: HTML & Markdown Viewer at 17.4 against Hew Playground's 26.0. On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Hew Playground | HTML & Markdown Viewer |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 2 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 26.0 | 17.4 — better |
| Further details — not scored | ||
| Size | 23 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Stephen Olesen | 洪霞 刘 |
In-app purchases
Hew Playground
No in-app purchases
HTML & Markdown Viewer
No in-app purchases
Questions
Is Hew Playground free?
Is HTML & Markdown Viewer free?
Do Hew Playground or HTML & Markdown Viewer have ads?
Other comparisons















