# RVLock Keyless vs Lettermen's Propane KC

The clearest difference is update cadence: RVLock Keyless at every 2 months against Lettermen's Propane KC's every 4 months. Lettermen's Propane KC's advantage is iOS requirement (12.2 vs 15.1). 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.

RVLock Keyless ships an update every 2 months, Lettermen's Propane KC every 4 months. The most recent releases landed on October 24, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | RVLock Keyless | Lettermen's Propane KC |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (6 ratings)](https://appshunter.io/ios/app/rvlock-keyless/id1515500690/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Free | — |
| Size | 34 MB | 56 MB |
| Requires iOS | 15.1 | **12.2** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [RVLock & Co LLC](https://appshunter.io/developer/1505739920) | [Rural Computer Consultants, Inc.](https://appshunter.io/developer/640795441) |

## What reviewers say

### RVLock Keyless

[App page](https://appshunter.io/ios/app/rvlock-keyless/id1515500690)

This app allows you to unlock your RV or travel trailer using your smartphone. It connects to a keyless RVLock system, offering a convenient alternative to traditional keys. Manage your RV's access with your phone, FOB, or keypad.

**Highlights:** Unlock RV with smartphone, Connects to keyless RVLock, Use FOB, keypad, or smartphone, Replaces traditional keys, BT Pro+ upgrade integration

**Features:** macOS Compatibility

**In-app purchases:** none


### Lettermen's Propane KC

[App page](https://appshunter.io/ios/app/lettermens-propane-kc/id6444366472)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RVLock Keyless free?

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

### Is Lettermen's Propane KC free?

Lettermen's Propane KC is free to download, with no in-app purchases.

### Do RVLock Keyless or Lettermen's Propane KC have ads?

Neither RVLock Keyless nor Lettermen's Propane KC shows ads.

### Which is updated more often, RVLock Keyless or Lettermen's Propane KC?

RVLock Keyless ships an update every 2 months, and Lettermen's Propane KC every 4 months. Most recently, RVLock Keyless was updated on October 24, 2026 and Lettermen's Propane KC on October 6, 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.*