Comparison

Codex Relay vs Hermex

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

Hermex

This app provides a native mobile interface for interacting with your self-hosted Hermes Agent server. It allows you to manage conversations, control agent settings, and access workspace files directly from your iPhone.

Highlights
  • Connect to your own Hermes server
  • Manage existing and start new conversations
  • Control models, profiles, and reasoning
  • Attach files and photos
  • Browse workspace files
  • Offline read-only viewing of recent sessions
Features
Read full description

Hermex is a native iPhone client for your self-hosted Hermes Agent server. It is designed for people who already run a reachable Hermes Web UI server and want a focused mobile way to keep up with agent work from iPhone. Connect to your own server, open existing sessions, start new conversations, and follow streamed responses as they arrive. Manage Kanban boards and cards, review status-focused work, update workflows, add comments, inspect history, and preview or launch Dispatcher runs. The app also supports model/profile/reasoning controls, file and photo attachments, workspace file browsing, tasks, skills, memory, usage details, and a share extension for staging content from other iOS apps. Agent execution happens on the configured Hermes server, not on the iPhone. Prompts, attachments, shared content, workspace requests, board and card actions, and session actions are sent only to the server URL you enter. Recent sessions and messages may be cached locally for offline read-only viewing, and the cache can be cleared from Settings. Hermex does not provide a hosted Hermes backend, in-app account creation, subscriptions, or in-app purchases. You need your own reachable Hermes Web UI server to use the app. Not affiliated with Nous Research.

Screenshots

Codex Relay4 screens
Hermex4 screens

Verdict

The call

The clearest difference is rating: Hermex at 4.6 against Codex Relay's 4.2. Hermex also leads on review sentiment (85% vs 71%). Codex Relay's advantage is iOS requirement (16.4 vs 18.0). On price, ratings volume, update cadence and ads 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Hermex holds the better App Store score, 4.6 against 4.2. Both are backed by a comparable volume of ratings — 54 and 97 respectively. Written reviews point the same way: 71% of Codex Relay's written reviews are positive against 85% of Hermex's.

UpkeepUpdate frequency

Codex Relay ships an update fortnightly, Hermex every 3 weeks. The most recent releases landed on September 25, 2026 and September 27, 2026 respectively.

Scorecard3 real differences · 8 level
Codex Relay versus Hermex: the parameters behind the verdict, then further details
ParameterCodex RelayHermex
PriceFreeFree
Rating4.2 (54 ratings)4.6 (97 ratings) — better
Positive reviews70.6% of reviews84.5% of reviews — better
Number of ratings5497 — better
Update frequencyFortnightly — betterEvery 3 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
Best chart rank#92#33 — better
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.4 — better18.0
Further details — not scored
Size111 MB68 MB
Age rating17+4+
DeveloperKang SungyuUzair Ansar

Customer experience

Codex Relay

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

Hermex

All ratings97 ratings
Positive92.8%
Neutral1.0%
Negative6.2%
Written reviews71 reviews
Positive84.5%
Neutral7.0%
Negative8.5%

In-app purchases

None

Codex Relay

No in-app purchases

None

Hermex

No in-app purchases

Questions

Is Codex Relay free?
Codex Relay is free to download, with no in-app purchases.
Is Hermex free?
Hermex is free to download, with no in-app purchases.
Which has better reviews, Codex Relay or Hermex?
Hermex is rated higher. Codex Relay averages 4.2 out of 5 from 54 ratings, while Hermex averages 4.6 from 97 ratings.
Do Codex Relay or Hermex have ads?
Neither Codex Relay nor Hermex shows ads.
Which is updated more often, Codex Relay or Hermex?
Codex Relay ships an update fortnightly, and Hermex every 3 weeks. Most recently, Codex Relay was updated on September 25, 2026 and Hermex on September 27, 2026.
Which is more popular, Codex Relay or Hermex?
Codex Relay currently peaks at #92 in the App Store charts, and Hermex at #33. Chart position reflects recent download velocity rather than total install base.

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