# OpenDesignAI vs Codex Relay

The clearest difference is rating: OpenDesignAI at 5.0 against Codex Relay's 4.2. Codex Relay's advantage is in-app purchases (none vs 4) and ratings volume (57 vs 1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. OpenDesignAI sells 4 in-app purchases, starting at $12.99 per month. Codex Relay asks for nothing beyond the download.

OpenDesignAI holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: Codex Relay has 57 ratings behind it against 1, so its average is the more settled of the two.

OpenDesignAI ships an update every 3 weeks, Codex Relay every 9 days. Both last shipped on October 31, 2026.

## The numbers

| Metric | OpenDesignAI | Codex Relay |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/opendesignai/id6758026545/reviews)** | [4.2 (57 ratings)](https://appshunter.io/ios/app/codex-relay-remote-codex-app/id6764463488/reviews) |
| Number of ratings | 1 | **57** |
| Positive reviews | — | 63.2% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 9 days** |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | — | **#33** |
| Size | 607 MB | 118 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 17+ |
| Developer | [DropDollar, LLC](https://appshunter.io/developer/879904673) | [Kang Sungyu](https://appshunter.io/developer/1895791948) |

## What reviewers say

### OpenDesignAI

[App page](https://appshunter.io/ios/app/opendesignai/id6758026545)

A comprehensive creative studio for mobile devices, integrating 3D modeling, sketching, circuit design, and media editing. It allows users to move from idea to finished project with tools for makers, students, and professionals.

**Highlights:** 3D Modeling and Sculpting, 3D Printing and Animation, Circuit and PCB Design, Sketching and Painting, LiDAR Scanning and Photogrammetry, Video and Audio Editing, Avatar Creation

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OpenDesignMonthly | $12.99 | per month |
| AnnualSubscriptionOpenDesign | $145.99 | per year |
| OpenToken | $9.99 | one-time |
| Lifetime Unlcok | $69.99 | one-time |


### Codex Relay

[App page](https://appshunter.io/ios/app/codex-relay-remote-codex-app/id6764463488)

**Currently charting:** #33 Top Free · Developer Tools (US App Store)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is OpenDesignAI free?

OpenDesignAI is free to download, with in-app purchases available.

### Is Codex Relay free?

Codex Relay is free to download, with no in-app purchases.

### Which has better reviews, OpenDesignAI or Codex Relay?

OpenDesignAI is rated higher. OpenDesignAI averages 5.0 out of 5 from 1 ratings, while Codex Relay averages 4.2 from 57 ratings.

### Do OpenDesignAI or Codex Relay have ads?

Neither OpenDesignAI nor Codex Relay shows ads.

### Which is updated more often, OpenDesignAI or Codex Relay?

OpenDesignAI ships an update every 3 weeks, and Codex Relay every 9 days. Most recently, OpenDesignAI was updated on October 31, 2026 and Codex Relay on October 31, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*