# ChatKeyPT vs MailZ

The clearest difference is review sentiment: MailZ at 100% against ChatKeyPT's 50%. MailZ also leads on ratings volume (54 vs 2). ChatKeyPT's advantage is in-app purchases (none vs 8) and ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. MailZ sells 8 in-app purchases, starting at $5.99 per month. ChatKeyPT asks for nothing beyond the download.

ChatKeyPT holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: MailZ has 54 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 50% of ChatKeyPT's written reviews are positive against 100% of MailZ's, so the app with the better star average is not the one people write more warmly about.

## The numbers

| Metric | ChatKeyPT | MailZ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/chatkeypt/id6608961477/reviews)** | [4.7 (54 ratings)](https://appshunter.io/ios/app/mailz-ai-email-generator/id6746621651/reviews) |
| Number of ratings | 2 | **54** |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Every 9 days |
| Monetization | **Free** | Free with in-app purchases |
| Size | 59 MB | 42 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Jack Zgombic](https://appshunter.io/developer/1761076902) | [COOLDEV CO., LTD](https://appshunter.io/developer/1629570682) |

## What reviewers say

### ChatKeyPT

[App page](https://appshunter.io/ios/app/chatkeypt/id6608961477)

This application provides an advanced AI chat interface, offering access to exclusive models and multimodal capabilities like image generation. It allows for tailored responses through system prompts and a pay-as-you-go cost model, making AI assistants more accessible.

**Highlights:** Access to exclusive AI models, Image generation via diffusion models, Tailored responses with system prompts, Pay-as-you-go cost model, Save and share generated images

**Features:** macOS Compatibility

**In-app purchases:** none


### MailZ

[App page](https://appshunter.io/ios/app/mailz-ai-email-generator/id6746621651)

This AI-powered tool helps you draft professional emails quickly and accurately. It offers features like prompt-based generation, grammar checking, and pre-made templates, streamlining your communication workflow.

**Highlights:** AI email generation from prompts, Grammar and spelling check, Email templates for various occasions, Direct sending from the app, Tone and style customization, AI-powered message assistance

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $5.99 | per month |
| Monthly | $7.99 | per month |
| Yearly | $34.99 | per year |
| Yearly Free Trial | $34.99 | per year |
| Yearly One-time Discount | $34.99 | per year |
| Lifetime Holiday Discount | $34.99 | one-time |
| Lifetime One-time Discount | $39.99 | one-time |
| Lifetime | $39.99 | one-time |


## Frequently asked questions

### Is ChatKeyPT free?

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

### Is MailZ free?

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

### Which has better reviews, ChatKeyPT or MailZ?

ChatKeyPT is rated higher. ChatKeyPT averages 5.0 out of 5 from 2 ratings, while MailZ averages 4.7 from 54 ratings.

### Do ChatKeyPT or MailZ have ads?

MailZ shows ads; ChatKeyPT does not.

---

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