# Propeller Calc vs ElBrokers

The clearest difference is update cadence: Propeller Calc at every 21 months against ElBrokers's every 52 months. ElBrokers's advantage is iOS requirement (15.6 vs 17.0). 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.

Propeller Calc ships an update every 21 months, ElBrokers every 52 months. The most recent releases landed on September 26, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Propeller Calc | ElBrokers |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/propeller-calc/id478119478/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 21 months** | Every 52 months |
| Monetization | Free | — |
| Size | 3 MB | 47 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Frode Rørvik](https://appshunter.io/developer/478119481) | [YAW REAL ESTATE MARKETING](https://appshunter.io/developer/1603414654) |

## What reviewers say

### Propeller Calc

[App page](https://appshunter.io/ios/app/propeller-calc/id478119478)

This utility calculates propeller performance metrics like pitch, gear ratio, RPM, slip, and speed. Input any four values, and the app computes the fifth, helping users understand the relationship between propeller design and boat performance.

**Highlights:** Calculate pitch, gear ratio, RPM, slip, and speed, Enter any four variables to find the fifth, Understand propeller slip and its impact, Supports iPhone and iPad, Free to use

**Features:** macOS Compatibility

**In-app purchases:** none


### ElBrokers

[App page](https://appshunter.io/ios/app/elbrokers/id1603414652)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Propeller Calc free?

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

### Is ElBrokers free?

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

### Do Propeller Calc or ElBrokers have ads?

Neither Propeller Calc nor ElBrokers shows ads.

### Which is updated more often, Propeller Calc or ElBrokers?

Propeller Calc ships an update every 21 months, and ElBrokers every 52 months. Most recently, Propeller Calc was updated on September 26, 2026 and ElBrokers on October 27, 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.*