# Co vs Celeris

The clearest difference is in-app purchases: Celeris at none against Co's 3. Celeris also leads on iOS requirement (16.4 vs 18.0). On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. Co sells 3 in-app purchases, starting at $3.99 per 7 days. Celeris asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Co against 5.0 for Celeris. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

Co ships an update weekly, Celeris every 9 days. The most recent releases landed on October 5, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Co | Celeris |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/co-work-ai-agent-assistant/id6757811698/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/celeris-speed-reading/id6776423681/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 9 days |
| Monetization | Free with in-app purchases | Freemium |
| Size | 51 MB | 50 MB |
| Requires iOS | 18.0 | **16.4** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [晨越 唐](https://appshunter.io/developer/1861360757) | [HEXAGON WORKS LLC](https://appshunter.io/developer/6776423683) |

## What reviewers say

### Co

[App page](https://appshunter.io/ios/app/co-work-ai-agent-assistant/id6757811698)

This AI-powered workspace acts as your intelligent assistant, streamlining tasks and boosting efficiency. Engage in natural conversations, generate content, organize information, and solve problems within a single, intuitive interface.

**Highlights:** AI Smart Chat, AI Writing and Content Generation, Productivity and Work Assistance, Clean and Efficient Interface, All-in-One AI Tools

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| weekly plan | $3.99 | per 7 days |
| yearly_plan | $39.99 | per year |
| yearly_plan_fullprice | $39.99 | per year |


### 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


## Frequently asked questions

### Is Co free?

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

### Is Celeris free?

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

### Which has better reviews, Co or Celeris?

Co and Celeris are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do Co or Celeris have ads?

Neither Co nor Celeris shows ads.

### Which is updated more often, Co or Celeris?

Co ships an update weekly, and Celeris every 9 days. Most recently, Co was updated on October 5, 2026 and Celeris on October 10, 2026.

---

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