# Patter vs CAS Mock Interview

The clearest difference is in-app purchases: CAS Mock Interview at none against Patter's 6. CAS Mock Interview also leads on iOS requirement (13.0 vs 18.6). On price, ads and device support there is nothing between them.

Both are free to download. Patter sells 6 in-app purchases, starting at $0.99 per month. CAS Mock Interview asks for nothing beyond the download.

## The numbers

| Metric | Patter | CAS Mock Interview |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/patter-ai-language-chat/id6762643113/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 11 days | — |
| Monetization | Free with in-app purchases | — |
| Size | 75 MB | 25 MB |
| Requires iOS | 18.6 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [David Vilaverde](https://appshunter.io/developer/1493782863) | [OUTLEAP TECHNOLOGIES PRIVATE LIMITED](https://appshunter.io/developer/1544701638) |

## What reviewers say

### Patter

[App page](https://appshunter.io/ios/app/patter-ai-language-chat/id6762643113)

Practice real conversations in over 10 languages with AI personas. Get instant, contextual corrections without judgment. Ideal for adult learners who want to move beyond basic phrases and build conversational fluency.

**Highlights:** AI conversation practice, In-moment corrections with explanations, Multiple AI personas, Translation assist, Voice dictation, Vocabulary list, Optional daily goals

**Features:** Family Sharing

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Day Tripper | $0.99 | per month |
| Explorer | $1.99 | per month |
| Resident | $2.99 | per month |
| Expat Family | $6.99 | per month |
| 100 Patter Credits | $0.99 | one-time |
| Bring Your Own AI Keys | $4.99 | one-time |


### CAS Mock Interview

[App page](https://appshunter.io/ios/app/cas-mock-interview/id6779073303)

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

**In-app purchases:** none


## Frequently asked questions

### Is Patter free?

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

### Is CAS Mock Interview free?

CAS Mock Interview is free to download, with no in-app purchases.

### Do Patter or CAS Mock Interview have ads?

Neither Patter nor CAS Mock Interview shows ads.

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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.*