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 and iPad client for your self-hosted Hermes agent. Connect to a reachable Hermes Web UI server, or enable the optional Bot Mode beta to connect directly to a Hermes agent host. Open existing sessions, start conversations, and follow streamed responses, tools, and reasoning as they arrive. Queue, steer, or stop an active run. Review file edits as diffs, browse workspace files, send photos and files, and dictate messages. Manage Kanban boards and cards, browse Tasks, Skills, Memory, and Usage, and choose models, profiles, and reasoning settings. Bot Mode adds a Bots inbox, Desktop sections, reactions, quick replies, approvals, questions, and group rooms. Live Activities keep working runs visible on the Lock Screen and Dynamic Island. Optional notifications let you know when work finishes or needs your attention. The share extension stages content from other apps for you to review and send. Agent execution happens on your configured server, not on the iPhone. Your server owns your conversations, tools, and workspace. Recent sessions and messages may be cached locally for read-only offline viewing; clear that cache from Settings. There is no Hermex-hosted agent backend, tracking, or analytics service. Optional push notifications use an open-source, self-hostable relay. Message previews are encrypted on your Hermes host and decrypted on your iPhone; the relay handles device tokens, notification metadata, and ciphertext, never message text, server URLs, or Hermes server credentials. Push is off until enabled. Hermex has no in-app account creation or in-app purchases. You need your own reachable Hermes server. Not affiliated with Nous Research.

Screenshots

Codex Relay4 screens
Hermex4 screens

Verdict

The call

The clearest difference is rating: Hermex at 4.7 against Codex Relay's 4.2. Hermex also leads on review sentiment (85% vs 63%). 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, 4.7 against 4.2. Both are backed by a comparable volume of ratings — 56 and 135 respectively. Written reviews point the same way: 63% of Codex Relay's written reviews are positive against 85% of Hermex's.

UpkeepUpdate frequency

Codex Relay ships an update every 9 days, Hermex weekly. The most recent releases landed on October 16, 2026 and October 18, 2026 respectively.

Scorecard3 real differences · 8 level
Codex Relay versus Hermex: the parameters behind the verdict, then further details
ParameterCodex RelayHermex
PriceFreeFree
Rating4.2 (56 ratings)4.7 (135 ratings) — better
Positive reviews63.2% of reviews85.1% of reviews — better
Number of ratings56135 — better
Update frequencyEvery 9 daysWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
Best chart rank#36#32 — better
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.4 — better18.0
Further details — not scored
Size118 MB72 MB
Age rating17+4+
DeveloperKang SungyuUzair Ansar

Customer experience

Codex Relay

All ratings56 ratings
Positive78.6%
Neutral3.6%
Negative17.9%
Written reviews19 reviews
Positive63.2%
Neutral0.0%
Negative36.8%

Hermex

All ratings135 ratings
Positive92.6%
Neutral1.5%
Negative5.9%
Written reviews87 reviews
Positive85.1%
Neutral6.9%
Negative8.0%

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 56 ratings, while Hermex averages 4.7 from 135 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 every 9 days, and Hermex weekly. Most recently, Codex Relay was updated on October 16, 2026 and Hermex on October 18, 2026.
Which is more popular, Codex Relay or Hermex?
Codex Relay currently peaks at #36 in the App Store charts, and Hermex at #32. Chart position reflects recent download velocity rather than total install base.

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