Troll Master Depth Calculator
September 19, 2025
More About Troll Master Depth Calculator
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
Latest Version
6.0
September 19, 2025
Trevor D. Lewis
Entertainment
Android
2,472
$49.99
appinventor.ai_trevor_lewis.TrollMaster
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User Reviews
Joshua Sykora
4 years ago
Very well laid out for all your trolling needs plus it's simple to use. No more books getting wet, this is the real deal.
A Google user
5 years ago
Shallow shad rap 7...10lbs braid...target depth 3 ft = 3 ft of line out? No...not in real life. Not even close. Some lures it seems correct but others like the example above are way off. Think I'll stick with the precision trolling apo
Mike Yount
5 years ago
Good info and easy to use. When there has been issues or just questions, the owner has been quick to reply with timely honest answers. Would highly recommend this app and the price makes it a no brainer.
David William Dickey
4 years ago
Every single time i got to enter the info and stats it tells me that it cant calculate and to add weight or a diver to reach desired depth. No matter what i do
Frank Zura
2 years ago
Updating my review to 4 STARS. It takes time to understand the correct inputs such as a 5/8 oz lure. Still a work in progress but feeling more comfortable.
A Google user
5 years ago
I really love the detailed options when you need to get your baits in that 2-3 foot strike zone with out having to use the trial and error method.
A Google user
6 years ago
Fantastic app, frequently updated with new features. This app has increased my catch rate significantly by helping me put my lure where the fish are. Keep up the great work!!
Rick Juedes
4 years ago
Trying to run what we call pump handles and this does not even come close to what I need for the info. Plus any dipsey comes with a chart so what would I need an app for? It doesn't have a flasher fly option which could also be ruin on off store boards.
A Google user
5 years ago
With free updates and them constantly adding more lures, it's a must have. It is very easy to use and really accurate. Highly recommended.
A Google user
5 years ago
Great app! Very accurate, easy to use, with additional baits added regularly. One tenth the price of other apps with lifetime subscription.
Craig Ferris
3 years ago
Very user friendly and easy to get the numbers you need to get your lures in the target zone. Extremely quick response for technical support.
A Google user
5 years ago
This app works great. I love the fact that the listed lure weights are already included. It is fast and gets you very close to your desired results. Basic ideas of trolling makes this app easy to use and understand
A Google user
6 years ago
Fairly simple to use and will only get better as more lure choices are added. Very reasonably priced compared to other options. Also, questions are answered quickly by developer.
Tyler Olson
5 years ago
I recently got into leadcore fishing and had gone out 3 times with no luck. I was just counting colors to estimate depth. I then downloaded the precision trolling app and on my 4th time out I landed 4 lake trout to include a gorgeous 28" fish. Just this morning was worth the $38 I spent on the app. The amount of data points these guys collected is insane and extremely impressive. If trolling is a style of fishing you do, you will not regret buying this app.
A Google user
6 years ago
I've never seen an app with the level of detail and options that this app has. I'd say its 4 stars right now, but I've only used it 2 weeks and the quality of upgrades and additional info provided in only a few weeks makes me have no doubt itll be a 5 star (high 5 star) app in no time at all. Amazing concept! Blows Precision Trolling out of the water.
Corey Schaff
5 years ago
Works well, would like to be able to set line type, leader length, etc and have it be saved every time you open the app. Would save time while on the water and make the app now user friendly. Most of us are using the same basic setup for a whole season or whole trip.
Eric Asfeld
5 years ago
This is not a good app. You enter a depth you want your plug (rapala, bandit, ect.) to run. Then you enter a couple of variables, and then it tells you how much line to put out. Except it doesn't change with speed! At all! And the calculations are of from my experience! Telling me to put out 14' of line to pull a shallow flicker shad 6' deep at any speed!
A Google user
6 years ago
I havent fully used it yet on the water but comparing it to precision trolling app this hands down destroys that app. Once you buy it it comes with a variety of common lures and you dont have to pay for them individually. It also has various lead core lines on there which is awesome. It seems like the developer is constantly updating the app and adding new lures and lines which speaks volumes of the developer. I already asked him a question and got my answer in 5 minutes. Cant wait for updates!!
Larry Buster
5 years ago
Great trolling tool. Much, much better than Precision Trolling and way less expensive. Trevor is super quick to answer questions or lend help when asked. This app will calculate line length for long line, lead core, as well as snap weights. You just enter the data and press calculate. I used the Precision Trolling app but was much more comfortable with Troll Master. It now has over or close too 100 different lure types and Trevor is adding more as they are tested. Buy it!!!!!!!!!!!
Larry Sickerson
4 months ago
I've been a loyalist since 2020. I would recommend this app for fishermen who are serious trollers. Pay attention to the list of lures in the app before you purchase so that you are not caught off guard. I gave it four stars because I recommend that the owner improve his glossary of terms and directions so future users learn how to interpret the results correctly. IMHO, better than Precision Trolling. PT shows much more line out for the same lure and line weight. Don't know why that is.
