Every fishing app shows you a number. Almost none of them tell you what the number is, which is convenient, because most of them are doing something much vaguer than the number implies.
So here is ours, stated plainly.
It is a ranking, inside one set of choices
StripedLines is built for striped bass. Its rating orders the options in front of you right now — this water, at these times, against the other water and times the app showed you in the same breath.
That is the whole claim. It is not:
- a probability that you will catch a fish
- a percentage chance of anything
- an expected number of fish per hour
- a statement that one spot is better than a spot in a different bay, a different week, or a different set
A Prime rating does not mean a 75 percent chance of anything. It means that inside this set, this option ranked above the Fair water and below whatever reads Fire. Move to a different day or a different stretch of coast and you are looking at a different set, and the ratings are not comparable across them.
That is what makes it useful: it compares the choices you actually have.
Why not just give a probability?
Because a catch probability needs data no fishery has.
A calibrated catch probability would need thousands of trips with the conditions, the method and the outcome all recorded — and a blank that reliably meant no fish were there.
The last one is the killer. A trip with no fish is not evidence that no fish were present. It is one angler, one method, one presentation, one small piece of water, for a finite amount of time. Your log records it as no fish, and that is all it records — never "no fish here".
Any app that shows you a catch probability either has data nobody in this fishery has, or is showing you a number it made up. There is no third option.
The data-quality notes are part of the answer
When the app says the water temperature is extrapolated, or that the buoys are offline, or that the current is estimated, that is not a disclaimer bolted on at the end. It is part of the answer.
Current is the clearest example. Its timing — which way it runs and roughly when it turns — is usually on firmer ground than its speed, so the app shows them separately and gives no single current grade.
A value with no source, no distance, and no stated uncertainty is not a measurement. It is a guess with good typography.
What it reads
It reads conditions, not fish: where the water, the current and the light line up, never a claim that fish are there or feeding. Where satellite temperature is too coarse for a narrow estuary, the screen says so.
What it is good for
Deciding where to go and when to leave, when you have three options and four hours, and you want the one where the water and the timing line up — with an honest read on how much of that is measured and how much is inferred.
It does not predict fish. It helps you choose.