# Celeris vs Codex AI

The clearest difference is review sentiment: Celeris at 100% against Codex AI's 0%. Celeris also leads on rating (5.0 vs 1.0) and in-app purchases (none vs 7). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Codex AI sells 7 in-app purchases, starting at $6.99 per 7 days. Celeris asks for nothing beyond the download.

Celeris holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews point the same way: 100% of Celeris's written reviews are positive against 0% of Codex AI's.

Celeris ships an update every 9 days, Codex AI weekly. The most recent releases landed on September 24, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Celeris | Codex AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/celeris-speed-reading/id6776423681/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/codex-ai-remote-codex/id6781323682/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Weekly** |
| Monetization | Freemium | Freemium |
| Size | 50 MB | 49 MB |
| Requires iOS | **16.4** | 18 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [HEXAGON WORKS LLC](https://appshunter.io/developer/6776423683) | [Ariadni Deligianni](https://appshunter.io/developer/6781323684) |

## What reviewers say

### Celeris

[App page](https://appshunter.io/ios/app/celeris-speed-reading/id6776423681)

Enhance your reading speed and comprehension with a word-by-word visual presentation. Import your own content, customize your reading experience, and track your progress to become a more efficient reader.

**Highlights:** Rapid Serial Visual Presentation (RSVP), Coasting mode with gliding lines, Import EPUB, plain text, and web articles, Automatic progress saving, Customizable reading speed up to 1000 WPM, Personalizable themes and fonts, Reading statistics and progress tracking

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

**In-app purchases:** none


### Codex AI

[App page](https://appshunter.io/ios/app/codex-ai-remote-codex/id6781323682)

This AI-powered assistant helps you organize tasks, plan projects, and draft content. Simply describe your needs in plain language to generate structured plans, notes, and summaries, streamlining your workflow from idea to action.

**Highlights:** AI assistant for everyday tasks, Structured results from simple descriptions, Create plans, notes, and summaries, Organize work into projects, Save and return to sessions, Draft content and manage workflows

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Forge Pro | $6.99 | per 7 days |
| Forge Pro | $49.99 | per year |
| Tokens | $9.99 | one-time |
| Tokens | $19.99 | one-time |
| Tokens | $34.99 | one-time |
| Tokens | $59.99 | one-time |
| Tokens | $99.99 | one-time |


## Frequently asked questions

### Is Celeris free?

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

### Is Codex AI free?

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

### Which has better reviews, Celeris or Codex AI?

Celeris is rated higher. Celeris averages 5.0 out of 5 from 2 ratings, while Codex AI averages 1.0 from 1 ratings.

### Do Celeris or Codex AI have ads?

Neither Celeris nor Codex AI shows ads.

### Which is updated more often, Celeris or Codex AI?

Celeris ships an update every 9 days, and Codex AI weekly. Most recently, Celeris was updated on September 24, 2026 and Codex AI on October 4, 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.*