Nautical Chart Plotter Opportunity in Portugal
Portugal — Navigation, for consumers. Niche: Nautical Chart Plotter.
Data from the week of 12 Oct 2026, refreshed weekly.
score out of 100
- Demand44
23,855 ratings in the US and UK, 0 in Portugal
- Room locally100
0 apps with 50 or more ratings in Portugal
- Language gap58
4 of the top 6 without Portuguese
- Incumbent weakness0
4.7 stars on average; 0 of 6 not updated in a year
- AI gap100
6 of the top 6 not built around AI
- Momentum—
History building since 19 Oct 2026 — counted as neutral (50) for now
Why this is an opening
The market score is 55 with a local gap of 58 and demand at 44. Out of 6 top apps, 0 are local strong apps and 4 lack language support. Top local ratings sit at 0 while reference ratings reach 23855 in the United States.
The leading apps
Ranked by ratings in the United States and United Kingdom; ratings and stars in Portugal where it has them.
| App | Ratings in Portugal | Ratings US + UK | Stars | Portuguese | Last update | AI |
|---|---|---|---|---|---|---|
| Savvy Navvy: Boat NavigationNot in this store | 0 | 10,503 | 4.7 | No | Oct 2026 | No AI |
| Argo Navigation: Boat GPS, MapNot in this store | 0 | 6,203 | 4.9 | Yes | Oct 2026 | No AI |
| Nautical Charts & MapsNot in this store | 0 | 3,793 | 4.6 | Yes | Jul 2026 | No AI |
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Start the 7-day trialScored 2026-10-23 with score version 1. How the score works.