Sea/calc distance vs Spark Commodities
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sea/calc distance
Calculate voyage distances, times, and costs between waypoints on a map. View arrival/departure times, bunker prices, and vessel routes on a timeline. Exclude waypoints for alternative routing.
- Plot routes on a map
- Calculate SECA distances
- Estimate voyage time
- View arrival/departure times
- Access daily bunker prices
- Display vessel route timeline
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Sea/calc distance allows users to plot a route on a map and calculate the distance (including SECA distances) and voyage time between a number of waypoints, which can be locations, vessel AIS positions or points on a map. - View arrival and departures times in different formats, including the local time at each of the locations in your route - Exclude certain waypoints to use a different routing option View and select from a list of daily bunker prices - Display vessel route in a timeline, showing where the vessel will be at any given time on the route
Spark Commodities
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Key Features - Post an indicative cargo swap or outright bid/offer, tenders and swap - Receive bilateral interest from from counterparties on your post - Connect and finalise the details outside the platform
Screenshots
Verdict
The clearest difference is update cadence: Spark Commodities at every 2 weeks against Sea/calc distance's every 2 months. Spark Commodities also leads on iOS requirement (15.5 vs 18.6). On price, ads, in-app purchases and device support 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.
Sea/calc distance ships an update every 2 months, Spark Commodities every 2 weeks. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.
| Parameter | Sea/calc distance | Spark Commodities |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| Update frequency | Every 2 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 18.6 | 15.5 — better |
| Further details — not scored | ||
| Size | 31 MB | 41 MB |
| Age rating | 4+ | 4+ |
| Developer | Maritech Services Limited | Spark Commodities |
In-app purchases
Sea/calc distance
No in-app purchases
Spark Commodities
No in-app purchases
Questions
Is Sea/calc distance free?
Is Spark Commodities free?
Do Sea/calc distance or Spark Commodities have ads?
Which is updated more often, Sea/calc distance or Spark Commodities?
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