Troll Master Depth Calculator

In-app purchases
3,3
66 reviews
10K+
Downloads
Content rating
Everyone
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About this app

The most comprehensive trolling app on the market! 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.

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.

Current Lures:

Bagley Rumble B 11
Bagley Rumble B 13
Bagley Rumble B 9
Bandit B Shad
Bandit Bandit 100
Bandit Bandit 200
Bandit Bandit 300
Bandit Walleye Deep
Bandit Walleye Shallow
Bay Rat Bay Rat
Bay Rat Bay Rat LD
Bay Rat Long Extra Deep
Berkley Flicker Minnow 11
Berkley Flicker Minnow 5
Berkley Flicker Minnow 7
Berkley Flicker Minnow 9
Berkley Flicker Shad 5
Berkley Flicker Shad 7
Berkley Flicker Shad 9
Berkley Flicker Shad Shallow 5
Berkley Flicker Shad Shallow 7
Berkley Jointed Flicker Shad 5
Berkley Jointed Flicker Shad 7
Bill Lewis Rattle Trap
Bomber Bomber CD20
Bomber Bomber CD25
Bomber Bomber CD30
Bomber Long A 14A 3 1/2
Bomber Long A 15A 4 1/2
Bomber Model A Crankbait B02, 2A
Bomber Model A Crankbait B04, 4A
Bomber Model A Crankbait B05, 5A
Bomber Model A Crankbait B06, 6A
Bomber Model A Crankbait B07, 7A
Cotton Cordell Wally Diver
#3 Crawler Harness
#4 Crawler Harness
11 inch Flasher/Fly
4 inch Dodger/Fly
4 inch Flasher/Fly
4.5 inch Dodger/Fly
6 inch Dodger/Fly
8 inch Flasher/Fly
Lead Jig with Trailer
Spoon
Kilam Custom Baits Supa6
Norman DD22
Norman Deep Baby N
Norman Deep Little N
Norman Deep Tiny N
Norman Middle N
Rapala Deep Husky Jerk 12
Rapala Deep Jointed Husky Jerk 12
Rapala Deep Jointed Husky Jerk 8
Rapala Husky Jerk 10
Rapala Jointed Deep Husky Jerk 08
Rapala Jointed Shad Rap 4
Rapala Jointed Shad Rap 5
Rapala Jointed Shad Rap 7
Rapala Minnow Rap 9
Rapala Original Floater F9
Rapala Original Floater F11
Rapala Original Floater F13
Rapala Scatter Rap Deep Husky Jerk 10
Rapala Scatter Rap Tail Dancer 9
Rapala Shad Dancer 5
Rapala Shad Rap 5
Rapala Shad Rap 7
Rapala Shad Rap 9
Rapala Shad Rap Deep 9
Rapala Shallow Shad Rap 5
Rapala Shallow Shad Rap 7
Rapala Tail Dancer 5
Rapala Tail Dancer 7
Rapala Tail Dancer 9
Rapala Tail Dancer Deep 11
Rapala Tail Dancer Deep 7
Rapala Tail Dancer Deep 9
Reef Runner Deep Little Ripper
Reef Runner Reef Runner Deep
Salmo Bullhead 4
Salmo Bullhead 6
Salmo Frisky 5
Salmo Frisky 7
Salmo Hornet 3
Salmo Hornet 4
Salmo Hornet 5
Salmo Hornet 6
Bucktail
Bucktail with Trailer
Bullet
Parachute
Parachute with Trailer
Soft Plastic Swimbait
Tube
Umbrella Rig
Smithwick Elite 8 Rogue
Smithwick Smithwick Perfect 10
Smithwick Suspending Rattling Rogue
Smithwick Top 20
Storm Deep Thunderstick
Storm Deep Thunderstick Jr
Storm Hot N Tot 3/16 oz/5cm
Storm Hot N Tot 3/8 oz/6cm
Storm Thin Fin 6
Storm Thin Fin 8
Storm Wiggle Wart
Striper Sniper Striper Sniper 1 oz Kodiak Jig
Striper Sniper Striper Sniper Ultralight Rig/10in Worms
Striper Sniper Striper Sniper Ultralight Rig/4in Shad
Striper Sniper Striper Sniper Ultralight Rig/7in Worms
Walleye Nations Creations Reaper
Walleye Nations Creations Shaky Shad 5
Walleye Nations Creations Shaky Shad 7
XTackle XTDR4
XTackle XTDR6
Yo-Zuri Deep Diver Crystal Minnow
Yo-Zuri Floating Crystal 3D Minnow 4 3/8
Yo-Zuri Floating Crystal 3D Minnow 5 1/4
Updated on
26 Aug 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
Learn more about how developers declare collection

Ratings and reviews

3,2
64 reviews
Sguy1122
05 July 2024
I like the app overall. However, it hasn't updated in about 2 years. I paid 49 bucks for lifetime access. Now I see a new version of the app, with the same name, by the same developer, that Is being updated. If I want access to that I have to pay another 49 bucks! Seems kinda shady. *edit glad you guys are updating the app. But when I made the op over a year ago this app hadn't been updated. App works great tho
14 people found this review helpful
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Trevor D. Lewis
05 July 2024
Hello, we keep all versions of the Troll Master app updated. There are two versions of the app, but the only difference is the purchase method. One is a paid app (i.e. you have to pay to download it) and the other is a freemium app, meaning that you can download a limited version for free but must upgrade it to unlock full functionality.
Zack Zalman
14 February 2022
I've had this app for a couple years now. I love it. I troll Lake Erie every spring, and summer. The app has definitely made a difference. I've used other apps such as precision trolling, and I find this app to much more user friendly. When I'm setting lines out I want the information I need quickly, and this app has been the trick. I've asked for lures to be added, and by the next season they're added along with a polite response. I would recommend this app to anyone.
25 people found this review helpful
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Trevor D. Lewis
27 February 2022
Thank you for your review and we are glad you are catching some fish!
Adam Sutherin
07 June 2022
Edit: after response from owner I have changed review as covers more than I thought with explanation from author. Hadn't found spoons or harnesses prior to explanation. Omly thing missing is tru trips.Original comment- ..................Great in theory however one of the most common things ran on the great lakes is a worm harness with a dipsy diver. However with this app you can't calculate just the depth a diver takes you without a lure and no option for a static lure like harnesses or spoons
1 person found this review helpful
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Trevor D. Lewis
07 June 2022
Hi Adam, the depth of a diver also depends some on the lure it is attached to. You can approximate this by just using a small lure. We do have crawler harnesses in the app, these are in the Freshwater lure group. Please email us at trollingcalculator@gmail.com if you have any additional questions and thank you for your feedback.