# Propeller Calc vs Lumitec Poco

The clearest difference is review sentiment: Propeller Calc at 100% against Lumitec Poco's 0%. Lumitec Poco's advantage is rating (3.7 vs 3.0) and update cadence (every 6 months vs every 21 months). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Lumitec Poco holds the better App Store score, 3.7 against 3.0. Both are backed by a comparable volume of ratings — 1 and 3 respectively. Written reviews complicate that: 100% of Propeller Calc's written reviews are positive against 0% of Lumitec Poco's, so the app with the better star average is not the one people write more warmly about.

Propeller Calc ships an update every 21 months, Lumitec Poco every 6 months. The most recent releases landed on September 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Propeller Calc | Lumitec Poco |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (1 ratings)](https://appshunter.io/ios/app/propeller-calc/id478119478/reviews) | **[3.7 (3 ratings)](https://appshunter.io/ios/app/lumitec-poco/id1462761366/reviews)** |
| Number of ratings | 1 | **3** |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 21 months | **Every 6 months** |
| Monetization | Free | Free |
| Size | 3 MB | 20 MB |
| Requires iOS | 17.0 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Frode Rørvik](https://appshunter.io/developer/478119481) | [Lumitec LLC.](https://appshunter.io/developer/1106633770) |

## 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


### Lumitec Poco

[App page](https://appshunter.io/ios/app/lumitec-poco/id1462761366)

Control Lumitec lights from your smart device. Create custom scenes, select colors, and manage lighting functions wirelessly. This app works with a compatible control module for seamless on-board lighting management.

**Highlights:** Custom button functions, Color selection, Lighting scene creation, Bluetooth and WiFi connectivity, Stand-alone or MFD sync, PLI-enabled light control

**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 Lumitec Poco free?

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

### Which has better reviews, Propeller Calc or Lumitec Poco?

Lumitec Poco is rated higher. Propeller Calc averages 3.0 out of 5 from 1 ratings, while Lumitec Poco averages 3.7 from 3 ratings.

### Do Propeller Calc or Lumitec Poco have ads?

Neither Propeller Calc nor Lumitec Poco shows ads.

### Which is updated more often, Propeller Calc or Lumitec Poco?

Propeller Calc ships an update every 21 months, and Lumitec Poco every 6 months. Most recently, Propeller Calc was updated on September 26, 2026 and Lumitec Poco on October 24, 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.*