# IsItCorrect PAT vs Co

The clearest difference is in-app purchases: IsItCorrect PAT at none against Co's 10. IsItCorrect PAT also leads on iOS requirement (14.0 vs 18.0). Co's advantage is update cadence (every 9 days vs every 16 months). On price, ads and device support there is nothing between them.

Both are free to download. Co sells 8 in-app purchases, starting at $3.99 per 7 days. IsItCorrect PAT asks for nothing beyond the download.

IsItCorrect PAT ships an update every 16 months, Co every 9 days. The most recent releases landed on November 7, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | IsItCorrect PAT | Co |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.7 (3 ratings)](https://appshunter.io/ios/app/co-work-ai-agent-assistant/id6757811698/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 9 days** |
| Monetization | — | Free with in-app purchases |
| Size | 1 MB | 59 MB |
| Requires iOS | **14.0** | 18.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 12+ |
| Developer | [David Storey](https://appshunter.io/developer/1577093950) | [晨越 唐](https://appshunter.io/developer/1861360757) |

## What reviewers say

### IsItCorrect PAT

[App page](https://appshunter.io/ios/app/isitcorrect-pat/id1585178782)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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

**Features:** iPhone Duo support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| weekly plan | $3.99 | per 7 days |
| Lite | $14.99 | per month |
| Standard | $29.99 | per month |
| free3day_standard | $29.99 | per month |
| yearly_plan | $39.99 | per year |
| yearly_plan_fullprice | $39.99 | per year |
| Pro | $79.99 | per month |
| Max | $149.99 | per month |


## Frequently asked questions

### Is IsItCorrect PAT free?

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

### Is Co free?

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

### Do IsItCorrect PAT or Co have ads?

Neither IsItCorrect PAT nor Co shows ads.

### Which is updated more often, IsItCorrect PAT or Co?

IsItCorrect PAT ships an update every 16 months, and Co every 9 days. Most recently, IsItCorrect PAT was updated on November 7, 2026 and Co on November 9, 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.*