Stop guessing howdeep your lure runs
Get exact trolling depth in seconds based on your lure, speed and setup.
See it in action
A closer look at the app
From depth calculation to full spread planning and catch tracking.
Instant depth calculation
Know exactly how deep your lure runs
Plan your full spread
Balance rods and avoid tangles
Track every catch
See what works over time
Scan & identify lures
AI helps you find and match lures
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Catch more fish with better decisions
- Stop guessing
- Fish at the right depth every time
- Learn what works in your water
Everything you need for smarter trolling
Know exact lure depth instantly
Plan your full trolling spread
Track what actually catches fish
Scan and identify lures with AI
How it works
Three steps to exact depth
Choose your lure
Pick from the library or scan your own
Enter speed & setup
Add trolling speed and line setback
Get exact depth instantly
Real-world depth in feet, every time
4.9 · 412 reviews
“Finally I know exactly how deep my lures run.”
Pricing
Simple pricing
Premium
$4.99/month
- 7-day free trial
- Cancel anytime
- Instant depth calculation
- Full spread planner
- Catch logbook
- AI lure scanner
Loved by anglers
Real stories from the water
Trusted by 10,000+ anglers across North America.
“Finally stopped guessing my crankbait depth. Hooked into a 14 lb king first trip after dialing in the exact dive curve.”
“The spread planner alone is worth it. No more tangled lines when I run dipsies and riggers together.”
“Kokanee fishing changed for me. I dial in 32 feet and stay there all day. The catch log shows the patterns I never noticed before.”
“Walleye trolling with leadcore used to be a math headache. Now I just type in colors out and speed and it tells me the depth.”
“The lure scanner is a game changer. I snap a photo of an old bait and it tells me how it runs. Worth every penny.”
“I run a charter boat. My deckhands use this on every trip — speeds up setup and keeps clients catching fish.”
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Guides
Learn how to troll smarter
Guides on lure depth, trolling setups and catching more fish
Trolling Depth Calculator– Know Exactly How Deep Your Lure Runs
Trolling depth depends on lure type, speed, line length and setup. Without the right tools it's nearly impossible to know where your lure actually runs.
Trolling Depth gives you instant, accurate depth estimates so you can stop guessing and target fish more effectively.
How to calculate trolling depth
- Lure type and size affect diving behavior
- Trolling speed changes depth instantly
- Line length determines how far down your lure travels
- Setup (weights, divers, rods) impacts the final depth
Plan your trolling spread
A successful trolling setup isn't just about one lure – it's about the entire spread. Use the built-in spread planner to assign lures, balance depths, avoid tangles and optimize for different species.
Track what actually works
Save catches with lure, depth and species. Identify patterns over time and see which setups perform best on your water.
Trolling depth, lure setup and fishing guides
Trolling Depth helps anglers calculate lure depth, plan setups and track results. Learn how depth, speed and lure selection affect your success with our guides.
Frequently asked questions
Built for anglers, by anglers
Trolling Depth is designed to help anglers fish smarter, not harder. We focus on accuracy, simplicity and real-world results on the water.
Trolling Depth is built for anglers targeting salmon, trout, walleye and more.
Questions? Contact us at support@trollingdepth.com