IMO Signs vs Navigation Lights 3D
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
IMO Signs
This educational app allows users to search for symbols by ID or name. It's designed for studying and reinforcing knowledge in a specific subject area. Enjoy a straightforward learning experience.
- Search by ID
- Search by Name
- Knowledge rechecking
- Study aid
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- Search view by ID - Search view by Name Good for study and recheck your knowledge. Hope you enjoy! :) Thanks
Navigation Lights 3D
Study maritime navigation lights and vessel identification according to COLREGs-72. Observe vessels from various angles to understand their position, capabilities, and activities in low visibility. Ideal for aspiring and current navigators.
- COLREGs-72 compliant study
- Observe night lights from multiple angles
- Understand vessel position and capabilities
- Identify vessel types in low visibility
- Supports dark mode
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Application for studying night lights and daytime figures of vessels in accordance with the requirements of the COLREGs-72. The application allows you to observe the night lights of different types of vessels from different angles. Understanding of COLREG navigation lights allows you to correctly estimate vessel position, its maneuvering capabilities and to determine the nature of its work at night time and in poor visibility conditions. The application will be useful to navigators and those who prepare to become one. The app supports dark mode. We welcome comments and suggestions to our e-mail: support@appsforeach.com
Screenshots
Verdict
The clearest difference is review sentiment: IMO Signs at 100% against Navigation Lights 3D's 20%. Navigation Lights 3D's advantage is update cadence (every 3 weeks vs every 95 months) and price ($1.99 vs $3.99). On ads, in-app purchases, monetization model 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
IMO Signs costs $3.99 and Navigation Lights 3D $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
IMO Signs ships an update every 95 months, Navigation Lights 3D every 3 weeks. The most recent releases landed on September 21, 2026 and September 20, 2026 respectively.
| Parameter | IMO Signs | Navigation Lights 3D |
|---|---|---|
| Price | $3.99 | $1.99 — better |
| Positive reviews | 100.0% of reviews — better | 20.0% of reviews |
| Update frequency | Every 95 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.6 — better | 18.0 |
| Further details — not scored | ||
| Size | 194 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Sergejs Zeigurs | Smirnov Yury |
Customer experience
IMO Signs
Navigation Lights 3D
In-app purchases
IMO Signs
No in-app purchases
Navigation Lights 3D
No in-app purchases
Questions
Is IMO Signs free?
Is Navigation Lights 3D free?
Do IMO Signs or Navigation Lights 3D have ads?
Which is updated more often, IMO Signs or Navigation Lights 3D?
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