How we rank and write
The ranking method
Each fish species in Napp has a profile: which waters it lives in, its latitude range, its season, its typical feeding times, and the water temperature and weather it prefers. When you open a spot, Napp scores every species present there against the live conditions right now and ranks them High, Medium or Low. This is a transparent rule of thumb built from fisheries knowledge, not a machine-learning model or a hidden algorithm. Anyone could work out the same result by hand from the same inputs.
Data sources and how we check them
- Live weather: MET Norway, the Norwegian Meteorological Institute, a free open-data service used by weather apps worldwide.
- Water temperature: shown as an estimate derived from air temperature, season and location, since there is no live water-temperature feed we can plug into. We label it clearly as an estimate rather than a live reading.
- Waters and species: a curated database we build and check by hand, currently covering Sweden and the United States.
- Water descriptions: Wikipedia.
- Fish photos: Wikimedia Commons.
Our writing standards
The guides and blog posts on Napp are written for anglers by a real person, not generated and published unread. We favor evidence and mechanism over vibes: if we say a fish prefers cooler, oxygen-rich water in summer, we explain why that is true rather than just asserting it. We cite named sources where we can, avoid AI-sounding filler, and would rather publish a shorter honest post than a padded generic one. Posts are reviewed before they go live.
Corrections
If you spot a mistake in a ranking, a species profile, a water description or a blog post, we want to fix it. Email itsthekm@gmail.com and we will look into it.