# WASP Sim vs Kern River Propane

The clearest difference is iOS requirement: WASP Sim at 9.0 against Kern River Propane's 12.2. On price, update cadence, ads and in-app purchases there is nothing between them.

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

WASP Sim ships an update every 8 months, Kern River Propane every 4 months. The most recent releases landed on September 22, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | WASP Sim | Kern River Propane |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 4 months** |
| Size | 28 MB | 57 MB |
| Requires iOS | **9.0** | 12.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NPE Inc](https://appshunter.io/developer/424774346) | [Rural Computer Consultants, Inc.](https://appshunter.io/developer/640795441) |

## What reviewers say

### WASP Sim

[App page](https://appshunter.io/ios/app/wasp-sim/id980920778)

**Features:** macOS Compatibility

**In-app purchases:** none


### Kern River Propane

[App page](https://appshunter.io/ios/app/kern-river-propane/id1625342521)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is WASP Sim free?

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

### Is Kern River Propane free?

Kern River Propane is free to download, with no in-app purchases.

### Do WASP Sim or Kern River Propane have ads?

Neither WASP Sim nor Kern River Propane shows ads.

### Which is updated more often, WASP Sim or Kern River Propane?

WASP Sim ships an update every 8 months, and Kern River Propane every 4 months. Most recently, WASP Sim was updated on September 22, 2026 and Kern River Propane on September 16, 2026.

---

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