Propeller Calc vs Lumitec Poco
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Propeller Calc
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.
- 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
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This calculator can determine pitch, gear ratio, RPM, propeller slip and speed parameters. Enter any four variables, and it will calculate the fifth. Use the toggle switch to choose which field to calculate. Pitch is the theoretical forward movement for one complete turn of the propeller. Every inch of the boat in contact with the water induces drag. Therefore, the distance travelled differs since the propeller is "slipping" behind the theoretical distance it should travel with each rotation. The difference between theory and reality is called slip. Depending on your application, slip typically ranges between 5% and 20%. A lower number is only sometimes what you are after. Slip of a prop changes with operating conditions and is not a direct measure of efficiency. Please consult professionals for guidance. Happy powerboating
Lumitec Poco
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.
- Custom button functions
- Color selection
- Lighting scene creation
- Bluetooth and WiFi connectivity
- Stand-alone or MFD sync
- PLI-enabled light control
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Poco Digital Lighting Control delivers powerful, low cost on-board lighting control of all above and below water Lumitec lights through a compatible MFD or connected smart device and a simple, easy to install control module. The Poco App provides even more functionality to this already powerful lighting control system and allows for control of Lumitec PLI-enabled lighting from your smart device. Create and control custom button functions, color selection and lighting scenes straight from your phone of tablet. Poco is easy to configure and connects via Bluetooth or WiFi and can work in sync with a compatible MDF or as a stand-alone Poco lighting controller. Requires the Poco Control Module to be installed on your boat with Lumitec PLI-enabled lights.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Propeller Calc | Lumitec Poco |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (1 ratings) | 3.7 (3 ratings) — better |
| Positive reviews | 100.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 1 | 3 — better |
| Update frequency | Every 21 months | Every 6 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | Frode Rørvik | Lumitec LLC. |
Customer experience
Propeller Calc
Lumitec Poco
In-app purchases
Propeller Calc
No in-app purchases
Lumitec Poco
No in-app purchases
Questions
Is Propeller Calc free?
Is Lumitec Poco free?
Which has better reviews, Propeller Calc or Lumitec Poco?
Do Propeller Calc or Lumitec Poco have ads?
Which is updated more often, Propeller Calc or Lumitec Poco?
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