Propeller Calc vs MediaMaster® Remote
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
MediaMaster® Remote
Control your compatible JL Audio marine audio system wirelessly from your smartphone or tablet. Adjust volume, select sources, manage presets, and fine-tune audio settings from up to 35 feet away.
- Wireless audio control
- Source selection
- Preset access
- Volume and zone controls
- Tone and balance adjustments
- Source-specific settings
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JL Audio, the absolute leader in premium and high-performance marine audio products presents MediaMaster® Remote, the ultimate wireless controller for compatible source units. Designed to deliver comprehensive controls in the palm of your hand, this app permits untethered enjoyment of your marine audio system using your compatible wireless device, from up to 35 ft (11 m) away. Thanks to advanced Bluetooth® Low Energy technology and a clean user interface, you can easily navigate and command your audio system from your wireless device with the same familiarity as your MediaMaster®. Compatible JL Audio MediaMaster® source units: MM105, MM105-HR App functionality requires the latest source unit software installed: 1.0.1325 or higher Please visit the MediaMaster® Help Center for more info: http://www.jlaudio.com/MediaMaster-Support Main control functions include: Power ON/OFF Source selection Access to stored presets Audio source navigation All volume level controls (master & individual zone) All subwoofer level controls (master & individual zone) All tone & balance controls (master & individual zone) Source specific settings
Screenshots
Verdict
The clearest difference is rating: MediaMaster® Remote at 4.1 against Propeller Calc's 3.0. MediaMaster® Remote also leads on update cadence (every 4 months vs every 21 months) and ratings volume (11 vs 1). Propeller Calc's advantage is review sentiment (100% vs 60%). 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.
MediaMaster® Remote holds the better App Store score, 4.1 against 3.0. That said, the two scores are not equally well evidenced: MediaMaster® Remote has 11 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 100% of Propeller Calc's written reviews are positive against 60% of MediaMaster® Remote'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, MediaMaster® Remote every 4 months. The most recent releases landed on September 26, 2026 and October 23, 2026 respectively.
| Parameter | Propeller Calc | MediaMaster® Remote |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (1 ratings) | 4.1 (11 ratings) — better |
| Positive reviews | 100.0% of reviews — better | 60.0% of reviews |
| Number of ratings | 1 | 11 — better |
| Update frequency | Every 21 months | Every 4 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 16 — better |
| Further details — not scored | ||
| Size | 3 MB | 36 MB |
| Age rating | 4+ | 4+ |
| Developer | Frode Rørvik | Garmin |
Customer experience
Propeller Calc
MediaMaster® Remote
In-app purchases
Propeller Calc
No in-app purchases
MediaMaster® Remote
No in-app purchases
Questions
Is Propeller Calc free?
Is MediaMaster® Remote free?
Which has better reviews, Propeller Calc or MediaMaster® Remote?
Do Propeller Calc or MediaMaster® Remote have ads?
Which is updated more often, Propeller Calc or MediaMaster® Remote?
Other comparisons
