Sample for Science vs Nautical Ship Flags
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sample for Science
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The application is open to the general public, anyone can use it. No account creation required. The user can enter the application by logging in with their Google account or AppleID. The application was designed to distribute and reuse scientific samples that would otherwise be discarded. There is no paid content in the app.
Nautical Ship Flags
Explore maritime signal codes and Morse code with interactive quizzes and detailed flag information. Track your learning progress with an analytics view and practice signaling using your phone's flashlight. This app offers full offline functionality for continuous learning.
- Interactive quizzes
- Flag details and reference
- Flashlight Morse signaling
- Progress tracking
- Offline functionality
- Analytics view
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A complete guide to maritime flags, including letters, numbers, substitutes, and Morse code, now with an enhanced Analytics View to track your progress and identify areas for improvement. Enjoy interactive quizzes and detailed flag information. This app also lets you view Morse code signals through your phone’s flashlight, making it perfect for boaters, sailors, and anyone fascinated by maritime navigation. Features: • Interactive Tests • Randomized Question Types • Flashlight Morse Signaling • Flag Details and Symbol Reference • Review and Progress Tracking • Analytics View for tracking your progress • Bright, minimalistic design • Full offline functionality Links for more info: - Terms of Use & Privacy policy: https://nauticalshipflags.com - Link for more info: https://support.apple.com/en-gb/HT202039
Screenshots
Verdict
The clearest difference is in-app purchases: Sample for Science at none against Nautical Ship Flags's 2. Sample for Science also leads on iOS requirement (12.0 vs 15.2). Nautical Ship Flags's advantage is update cadence (every 3 weeks vs every 6 weeks). On price, ads 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. Nautical Ship Flags sells 2 in-app purchases, starting at $0.99 per 7 days. Sample for Science asks for nothing beyond the download.
Sample for Science ships an update every 6 weeks, Nautical Ship Flags every 3 weeks. The most recent releases landed on October 19, 2026 and October 24, 2026 respectively.
| Parameter | Sample for Science | Nautical Ship Flags |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.6 (15 ratings) — better |
| Positive reviews | — | 33.3% of reviews |
| Number of ratings | — | 15 — better |
| Update frequency | Every 6 weeks | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.2 |
| Further details — not scored | ||
| Size | 58 MB | 7 MB |
| Age rating | +4 | 4+ |
| Developer | Universidade Federal Fluminense - UFF | Stanislav Cekunov |
In-app purchases
Sample for Science
No in-app purchases
Nautical Ship Flags
- Weekly$0.997 Days
- Lifetime$2.99
Questions
Is Sample for Science free?
Is Nautical Ship Flags free?
Do Sample for Science or Nautical Ship Flags have ads?
Which is updated more often, Sample for Science or Nautical Ship Flags?
Other comparisons
