# LETTRIX vs PLC Controller & Simulator

The clearest difference is update cadence: LETTRIX at every 2 months against PLC Controller & Simulator's every 4 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

LETTRIX ships an update every 2 months, PLC Controller & Simulator every 4 months. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | LETTRIX | PLC Controller & Simulator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.8 (13 ratings)](https://appshunter.io/ios/app/lettrix-we-mail-it/id1364885498/reviews)** | — |
| Number of ratings | **13** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Free | — |
| Size | 32 MB | 39 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Neovix, Inc.](https://appshunter.io/developer/1106229777) | [Kevin Andoh](https://appshunter.io/developer/6785697530) |

## What reviewers say

### LETTRIX

[App page](https://appshunter.io/ios/app/lettrix-we-mail-it/id1364885498)

Create and send personalized letters and postcards from your device. The service prints, stamps, and mails your custom messages to any US destination, with options for scheduling future delivery.

**Highlights:** Create custom letters and postcards, Add photos and signatures, Print and mail to US destinations, Schedule future mailings, Multiple templates available, Saved recipient lists, Upload documents/images

**Features:** macOS Compatibility

**In-app purchases:** none


### PLC Controller & Simulator

[App page](https://appshunter.io/ios/app/plc-controller-and-simulator/id6785697528)

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

**In-app purchases:** none


## Frequently asked questions

### Is LETTRIX free?

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

### Is PLC Controller & Simulator free?

PLC Controller & Simulator is free to download, with no in-app purchases.

### Do LETTRIX or PLC Controller & Simulator have ads?

Neither LETTRIX nor PLC Controller & Simulator shows ads.

### Which is updated more often, LETTRIX or PLC Controller & Simulator?

LETTRIX ships an update every 2 months, and PLC Controller & Simulator every 4 months. Most recently, LETTRIX was updated on November 2, 2026 and PLC Controller & Simulator on October 31, 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.*