# JARTON Lock vs AI Email Generator：Mail Writer

The clearest difference is in-app purchases: JARTON Lock at none against AI Email Generator：Mail Writer's 3. JARTON Lock also leads on iOS requirement (9.0 vs 15.0). AI Email Generator：Mail Writer's advantage is update cadence (every 3 weeks vs every 12 months). On price, review sentiment and device support there is nothing between them.

Both are free to download. AI Email Generator：Mail Writer sells 3 in-app purchases, starting at $4.99 per 7 days. JARTON Lock asks for nothing beyond the download.

JARTON Lock ships an update every 12 months, AI Email Generator：Mail Writer every 3 weeks. The most recent releases landed on October 12, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | JARTON Lock | AI Email Generator：Mail Writer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (9 ratings)](https://appshunter.io/ios/app/ai-email-generatormail-writer/id6466037521/reviews)** |
| Number of ratings | — | **9** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | — |
| Update frequency | Every 12 months | **Every 3 weeks** |
| Monetization | **Free** | Subscription |
| Size | 111 MB | 146 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [JARTON Group Company Limited](https://appshunter.io/developer/1359725503) | [Anastasiia Hubarenko](https://appshunter.io/developer/1634180381) |

## What reviewers say

### JARTON Lock

[App page](https://appshunter.io/ios/app/jarton-lock/id1397724804)

Control your smart lock system using your phone. This app allows you to unlock doors remotely, offering a convenient way to manage access. It's designed for seamless integration with compatible smart lock hardware.

**Highlights:** Remote door unlocking, Smart lock system integration, Phone-based access control, Convenient door management

**Features:** macOS Compatibility

**In-app purchases:** none


### AI Email Generator：Mail Writer

[App page](https://appshunter.io/ios/app/ai-email-generatormail-writer/id6466037521)

This app leverages AI and chatbot technology to simplify email management. It helps you compose professional emails, track their delivery, and automate inbox organization. Secure your communications with advanced features.

**Highlights:** AI email generation, Email tracking, Email automation, Secure email account, Voice input for requests, Multi-language email support

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AI Email Generator | $4.99 | per 7 days |
| Mail Writer | $4.99 | per 7 days |
| AI Email Generator：Mail Writer | $9.99 | per 7 days |


## Frequently asked questions

### Is JARTON Lock free?

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

### Is AI Email Generator：Mail Writer free?

AI Email Generator：Mail Writer is free to download, with in-app purchases available.

### Which is updated more often, JARTON Lock or AI Email Generator：Mail Writer?

JARTON Lock ships an update every 12 months, and AI Email Generator：Mail Writer every 3 weeks. Most recently, JARTON Lock was updated on October 12, 2026 and AI Email Generator：Mail Writer on October 3, 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.*