Comparison

Codex Relay vs HTML Runner

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

Head to head
About

Codex Relay

Manage your Codex workflow remotely from your phone. Track active threads, send prompts, review output, and respond to requests. Designed for developers to stay connected to their work without being at their desk.

Highlights
  • Follow Codex conversations remotely
  • Send prompts and follow-up instructions
  • Respond to approval and input requests
  • Attach images for context
  • Review workspace and thread activity
  • Manage relay server state
  • Check usage statistics
Features
Read full description

Codex Relay brings your Codex workflow to your phone. Connect to your local Codex Relay server and keep track of active threads, responses, approvals, and workspace activity without staying at your desk. Send follow-up prompts, review assistant output, attach images for context, and respond when Codex needs input before it can continue. Built for developers who use Codex as part of real work, Codex Relay keeps the mobile experience focused, fast, and close to the terminal workflow. Key features: - Follow Codex conversations from your phone - Send prompts and follow-up instructions - Respond to approval and input requests - Attach images as context - Review workspace and thread activity - Manage connected relay server state - Check usage - Designed for local developer workflows Codex Relay requires a running Codex Relay server on your computer. Start the server with `npx codex-relay@latest`, then connect your device over your local network. GitHub: https://github.com/gronxb/codex-relay Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

HTML Runner

Instantly edit and run HTML, CSS, and JavaScript projects directly on your mobile device. Generate code with AI tools, paste it in, and preview your webpages in real-time without needing a desktop or server setup. Ideal for testing, demos, and learning web development.

Highlights
  • Live HTML Preview
  • Project Workspace
  • HTML, CSS & JavaScript Support
  • Code Formatting
  • Import Local Files
  • Offline Ready
  • AI Code Integration
Read full description

HTML Runner lets you instantly open, edit and run HTML projects directly on your iPhone and iPad. Built for the new AI coding workflow. Generate webpages with AI tools, paste the code into a project, and preview it instantly inside the app. No server setup. No desktop required. No complicated IDE. Just paste your code and run. Perfect for: • AI-generated websites • HTML/CSS/JS testing • Webpage preview • Frontend demos • Learning web development • Offline HTML viewing Key Features Live HTML Preview Run webpages instantly with the built-in browser. Project Workspace Organize files with folders and multi-file project support. HTML, CSS & JavaScript Support Create and edit complete web projects directly on mobile. Code Formatting Automatically format and clean up your code. Import Local Files Open and manage HTML-related files easily. Offline Ready Preview local webpages without deployment or internet access. Made for Beginners Simple and lightweight workflow for users who want to run AI-generated code. Whether you're previewing AI-generated websites, testing frontend ideas, or learning web development, HTML Runner gives you the fastest way to run web projects on mobile. Subscription Info: Subscriptions auto-renew unless turned off at least 24 hours before the end of the period. Renewal fees will be charged within 24 hours before the period ends. Manage or cancel subscriptions in your App Store account settings. Support & Feedback: Email: longlong13578@icloud.com User Agreement https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy https://outgoing-cheese-e3b.notion.site/Keyword-Highlighter-2b2b209c98f980e7b250c3bc0e6b6546Subscription Info: Subscriptions auto-renew unless turned off at least 24 hours before the end of the period. Renewal fees will be charged within 24 hours before the period ends. Manage or cancel subscriptions in your App Store account settings. Support & Feedback: Email: longlong13578@icloud.com User Agreement https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy https://outgoing-cheese-e3b.notion.site/Html-Studio-36cb209c98f9808aad51db25979e06da

Screenshots

Codex Relay4 screens
HTML Runner4 screens

Verdict

The call

The clearest difference is rating: HTML Runner at 4.8 against Codex Relay's 4.2. HTML Runner also leads on review sentiment (100% vs 71%). Codex Relay's advantage is in-app purchases (none vs 3) and ratings volume (54 vs 5). On price, update cadence, ads and chart position 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. HTML Runner sells 3 in-app purchases, starting at $0.99 per month. Codex Relay asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

HTML Runner holds the better App Store score, 4.8 against 4.2. That said, the two scores are not equally well evidenced: Codex Relay has 54 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 71% of Codex Relay's written reviews are positive against 100% of HTML Runner's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on September 21, 2026 and September 18, 2026 respectively.

Scorecard5 real differences · 6 level
Codex Relay versus HTML Runner: the parameters behind the verdict, then further details
ParameterCodex RelayHTML Runner
PriceFreeFree
Rating4.2 (54 ratings)4.8 (5 ratings) — better
Positive reviews70.6% of reviews100.0% of reviews — better
Number of ratings54 — better5
Update frequencyFortnightlyFortnightly
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
Best chart rank#75 — better#80
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.4 — better17.6
Further details — not scored
Size111 MB13 MB
Age rating17+4+
DeveloperKang Sungyu家贺 万

Customer experience

Codex Relay

All ratings54 ratings
Positive79.6%
Neutral3.7%
Negative16.7%
Written reviews17 reviews
Positive70.6%
Neutral0.0%
Negative29.4%

HTML Runner

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Codex Relay

No in-app purchases

3 purchases

HTML Runner

Subscriptions2
  • Premium Monthly$0.991 Month
  • Premium Yearly$3.991 Year
One-time1
  • Premium Lifetime$5.99

Questions

Is Codex Relay free?
Codex Relay is free to download, with no in-app purchases.
Is HTML Runner free?
HTML Runner is free to download, with in-app purchases available.
Which has better reviews, Codex Relay or HTML Runner?
HTML Runner is rated higher. Codex Relay averages 4.2 out of 5 from 54 ratings, while HTML Runner averages 4.8 from 5 ratings.
Do Codex Relay or HTML Runner have ads?
Neither Codex Relay nor HTML Runner shows ads.
Which is updated more often, Codex Relay or HTML Runner?
Codex Relay ships an update fortnightly, and HTML Runner fortnightly. Most recently, Codex Relay was updated on September 21, 2026 and HTML Runner on September 18, 2026.
Which is more popular, Codex Relay or HTML Runner?
Codex Relay currently peaks at #75 in the App Store charts, and HTML Runner at #80. Chart position reflects recent download velocity rather than total install base.

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