The most comprehensive trolling app on the market! A single purchase gets you free upgrades for life! Use it on the water to calculate your depth or use it at home to construct your own dive charts. This app lets you select your line, your lure, a diver or trolling weights, and then combine them however you want. Quickly and easily see the effect of changing line length, speed, weight, leader length, rod height, lures and many other factors.

The app is continually improved and new lures and tackle are added regularly. This is a great app for anyone who fishes in saltwater, freshwater, or anywhere in between. The app has many features for walleye, trout, salmon, striped bass, red drum, tuna, wahoo, and pretty much any other species you might troll for.

This app uses physics based calculations to determine the trolling depth of your lure with precision based on your inputs. The calculations have been verified via on the water testing.

Lure types:
Crankbaits (Flicker Shad, Bandit, Flicker Shad Shallow, Flicker Minnow, Scatter Rap, Shad Rap, Shad Rap Shallow Husky Jerk, Bombers, Smithwick Perfect 10, Hot N Tots, Hornets ), Crawler Harnesses, Bucktail, Bucktail with Trailer, Bullet, Lead Jig with Trailer, Parachute lures, Parachute with Trailer, Soft Plastic Swimbait, Spoon, Tube, Umbrella Rig, Striper Sniper Ultralight Rig with 4 inch shads, Striper Sniper Ultralight Rig with 7 inch worms, Striper Sniper Ultralight Rig with 10 inch worms, Striper Sniper Kodiak Jig, 4 inch Flasher/Fly, 8 inch Flasher/Fly, 11 inch Flasher/Fly, 4 inch Dodger/Fly, 4.5 inch Dodger/Fly, 6 inch Dodger/Fly

What’s New

Version 11.2

New icon, minor updates

Ratings and Reviews

4.8 out of 5
20 Ratings

20 Ratings

jingles50 ,

Excellent customer support

I had a question so I sent an email to the developer and within hours the question was answered. On my iPhone some of the lures were super imposed on top of other lure types he suggested I reduce the magnification of my text size and that fixed the problem. Then I had a few more questions and his responses were virtually immediate.
This is a really excellent app for serious fishermen and it’s bound to only get better.
Buddy K.

kluppy ,

Great app for calculating lure depth

I’ve tried other apps but they “assume” too many variables. This app allows you to select line type, length, weights or divers and troll speed. With this entered information you will know exactly where your lure is running. Targeting your lure to the depth of the fish yields far more success than just guessing or worse using a different app with bad information.

Bryce_E343 ,

Great App

Allows for many different selections. Ever since I’ve gotten it there has been a lot added as well, so the developer is always adding new things. Very impressed!


Trevor Lewis
32.8 MB

Requires iOS 8.1 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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