# IsItCorrect PAT vs ChatBot Smart Assistant

The clearest difference is in-app purchases: IsItCorrect PAT at none against ChatBot Smart Assistant's 3. IsItCorrect PAT also leads on device support (3 vs 1) and iOS requirement (14.0 vs 16.2). ChatBot Smart Assistant's advantage is update cadence (fortnightly vs every 16 months). On price and ads there is nothing between them.

Both are free to download. ChatBot Smart Assistant sells 3 in-app purchases, starting at $1.99 per 7 days. IsItCorrect PAT asks for nothing beyond the download.

IsItCorrect PAT ships an update every 16 months, ChatBot Smart Assistant fortnightly. The most recent releases landed on September 9, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | IsItCorrect PAT | ChatBot Smart Assistant |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (9 ratings)](https://appshunter.io/ios/app/chatbot-smart-assistant-evan/id6446467038/reviews)** |
| Number of ratings | — | **9** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 16 months | **Fortnightly** |
| Monetization | — | Free with in-app purchases |
| Size | 1 MB | 23 MB |
| Requires iOS | **14.0** | 16.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [David Storey](https://appshunter.io/developer/1577093950) | [Nicolo Stanciu](https://appshunter.io/developer/930855677) |

## What reviewers say

### IsItCorrect PAT

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

**Features:** macOS Compatibility

**In-app purchases:** none


### ChatBot Smart Assistant

[App page](https://appshunter.io/ios/app/chatbot-smart-assistant-evan/id6446467038)

Engage in intelligent conversations with an AI companion powered by advanced speech synthesis and ChatGPT integration.  Transcribe your voice into text and enjoy context-aware dialogue for a personalized experience.

**Highlights:** Advanced speech synthesis, Voice transcription, ChatGPT integration, Context-aware conversations, Personalized voice and speed settings

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Evan AI Pro Weekly | $1.99 | per 7 days |
| Evan AI Pro Monthly | $2.99 | per month |
| Evan AI Pro Yearly | $22.99 | per year |


## Frequently asked questions

### Is IsItCorrect PAT free?

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

### Is ChatBot Smart Assistant free?

ChatBot Smart Assistant is free to download, with in-app purchases available.

### Do IsItCorrect PAT or ChatBot Smart Assistant have ads?

Neither IsItCorrect PAT nor ChatBot Smart Assistant shows ads.

### Which is updated more often, IsItCorrect PAT or ChatBot Smart Assistant?

IsItCorrect PAT ships an update every 16 months, and ChatBot Smart Assistant fortnightly. Most recently, IsItCorrect PAT was updated on September 9, 2026 and ChatBot Smart Assistant on October 16, 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.*