Ship Shapes vs MARPOL
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ship Shapes
Learn to recognize and memorize the main day shapes used by boats and ships through an interactive matching game. Score points by correctly matching images to their descriptions. Achieve a score of 50 or more to demonstrate mastery.
- Match images to descriptions
- Learn ship day shape signals
- Score points for correct answers
- Master recognition and memorization
- Interactive learning experience
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Learn Ships Day Shapes by matching Images to Descriptions. An easy and fun way to score points as you learn. Anyone who can score 50 points or more will have mastered recognising and memorising the main day shapes used by boats and ships.
MARPOL
This interactive course covers the MARPOL Convention, including all annexes with detailed visuals. Engage with varied tests to master the material and aim for captain-level knowledge.
- Interactive MARPOL Convention course
- All MARPOL Annexes included
- Detailed images
- Varied tests and tasks
- Progress tracking to captain level
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Interactive course of the MARPOL Convention. All Annexes of MARPOL with detailed images. Lots of interesting and varied tests. Try to complete all the tasks and become a captain.
Screenshots
Verdict
The clearest difference is update cadence: Ship Shapes at every 3 weeks against MARPOL's every 2 months. Ship Shapes also leads on iOS requirement (12.1 vs 17.5). On price, review sentiment, ads and in-app purchases 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
Ship Shapes costs $1.99 and MARPOL $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Ship Shapes ships an update every 3 weeks, MARPOL every 2 months. Both last shipped on October 10, 2026.
| Parameter | Ship Shapes | MARPOL |
|---|---|---|
| Price | $1.99 | $1.99 |
| Rating | 2.0 (1 ratings) — better | — |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 12.1 — better | 17.5 |
| Further details — not scored | ||
| Size | 10 MB | 36 MB |
| Age rating | 4+ | 4+ |
| Developer | Edmund Broadbent | OLEKSANDR IZERGIN |
Customer experience
Ship Shapes
MARPOL
In-app purchases
Ship Shapes
No in-app purchases
MARPOL
No in-app purchases
