Comparison

Precision Trolling vs Troll Master Depth Calculator

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Precision Trolling

This app provides anglers with precise lure depth data for effective trolling. It helps predict lure running depths, target fish accurately, and avoid snags. Easily find productive lure and lead length combinations to maximize your time in the strike zone.

Highlights
  • Predict lure running depths
  • Target fish at specific depths
  • Avoid costly snags
  • Duplicate productive lure combinations
  • Search for lures at similar depths
  • Data Wheels for feet down/back calculation
Features
Read full description

The fishing information contained in the popular publication Precision Trolling is a troller’s dream come true. Dubbed “the Troller’s Bible” by the tens of thousands of anglers who use this information to target fish at specific depths, Precision Trolling is just what the name implies. Precision Trolling is a method of fishing that allows anglers to accurately predict the running depths of their favorite lures and diving devices! By manipulating lead length anglers can easily “aim” their favorite fishing lures at specific depths, accurately target fish they are seeing on their sonar while avoiding costly snagged lures. Even better, once a productive lead length is determined, it’s easy to duplicate that lure and lead length combination with other lines, putting more lures in the strike zone! The Precision Trolling Data App goes a step further. Once an angler has determined that a particular lure and lead length are effective at catching fish, it’s easy to search for other lures in the list of Precision Trolling App that achieve similar depths. Once a productive depth is determined where fish are biting, it’s a logical step to try different lures at the same depth to determine which lure or lures fish react best to. The new Precision Trolling Data App allows anglers to access a wealth of trolling data. The familiar “Dive Curves” made popular in the Precision Trolling book are now incorporated into easy to use “pickers” or “wheels”. The Data Wheels let you adjust the “feet down” to determine the “feet back”. This is particularly useful if you want to target fish at a certain depth that you are seeing on your sonar unit. The Data Wheel also allows anglers to adjust the “feet back” to determine the “feet down” that the lure will dive. This a fast and effective way of zeroing in on a target depth with any of the lures or diving devices included in the Precision Trolling app. For more information on Precision Trolling and how to become a better troller click here: www.precisiontrollingdata.com Precision Trolling Data LLC owns a patent U.S. Patent No. 7,113,449 entitled “Marine Electronics With Lure Depth Analyzer” issued September 26, 2006 which prevents other companies/individuals from providing lure data on an electronic device. All of the data provided in or by this app is also copyrighted by Precision Trolling Data LLC. Privacy Policy: https://www.precisiontrollingdata.com/privacy-notice Terms Of service: https://www.precisiontrollingdata.com/end-user-license

About

Troll Master Depth Calculator

This app calculates the precise trolling depth of your fishing lure based on various factors like line, lure type, and speed. It also allows for the creation of custom dive charts for at-home planning. Ideal for anglers targeting a wide range of freshwater and saltwater species.

Highlights
  • Calculate trolling depth
  • Create custom dive charts
  • Select line, lure, and weights
  • Adjust factors like speed and length
  • Physics-based calculations
  • On-water testing verified
Features
Read full description

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. Lure types: Bagley Rumble B 9 Bagley Rumble B 11 Bagley Rumble B 13 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 5 Berkley Flicker Minnow 7 Berkley Flicker Minnow 9 Berkley Flicker Minnow 11 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 3 inch Bomber CD20 Bomber CD25 Bomber CD30 Bomber Long A 14A 3 1/2 Bomber Model A B02, 2A Bomber Model A B04, 4A Bomber Model A B05, 5A Bomber Model A B06, 6A Bomber Model A B07, 7A Cotton Cordell Wally Diver CD5 #3 Crawler Harness #4 Crawler Harness 4 inch Dodger/Fly 4.5 inch Dodger/Fly 6 inch Dodger/Fly 4 inch Flasher/Fly 8 inch Flasher/Fly 11 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 Husky Jerk 10 Rapala Jointed Deep Husky Jerk 8 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 7 Rapala Tail Dancer Deep 9 Rapala Tail Dancer Deep 11 Reef Runner Deep Little Ripper Reef Runner Reef Runner Deep Salmo Bullhead 4 Salmo Bullhead 6 Salmo Frisky Deep 5 Salmo Frisky Shallow 7 Salmo Hornet 3F Salmo Hornet 4F Salmo Hornet 5F Salmo Hornet 6F Bucktail Bucktail with Trailer Bullet Parachute Parachute with Trailer Soft Plastic Swimbait Tube Umbrella Rig Smithwick Elite 8 Rogue Smithwick Perfect 10 Smithwick Suspending Rattling Rogue Smithwick Top 20 Storm Deep Thunderstick Storm Deep Thunderstick Jr Storm Hot N Tot 3/16oz 5cm Storm Hot N Tot 3/8oz 6cm Storm Thin Fin 6 Storm Thin Fin 8 Storm Wiggle Wart Striper Sniper Kodiak Jig, 1 oz Striper Sniper Ultralight Rig, 10 in Worms Striper Sniper Ultralight Rig, 4in Shad 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 Terms of Use: http://rmlew.atwebpages.com/trollmaster/termsofuse.html

Screenshots

Precision Trolling4 screens
Troll Master Depth Calculator4 screens

Verdict

The call

The clearest difference is rating: Precision Trolling at 4.5 against Troll Master Depth Calculator's 3.8. Precision Trolling also leads on review sentiment (90% vs 66%) and ratings volume (917 vs 73). On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Precision Trolling sells 11 one-off in-app purchases and Troll Master Depth Calculator sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Precision Trolling holds the better App Store score, 4.5 against 3.8. That said, the two scores are not equally well evidenced: Precision Trolling has 917 ratings behind it against 73, so its average is the more settled of the two. Written reviews point the same way: 90% of Precision Trolling's written reviews are positive against 66% of Troll Master Depth Calculator's.

UpkeepUpdate frequency

Precision Trolling ships an update every 6 weeks, Troll Master Depth Calculator monthly. The most recent releases landed on September 27, 2026 and September 22, 2026 respectively.

Scorecard3 real differences · 7 level
Precision Trolling versus Troll Master Depth Calculator: the parameters behind the verdict, then further details
ParameterPrecision TrollingTroll Master Depth Calculator
PriceFreeFree
Rating4.5 (917 ratings) — better3.8 (73 ratings)
Positive reviews89.8% of reviews — better65.9% of reviews
Number of ratings917 — better73
Update frequencyEvery 6 weeksMonthly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.012.0
Further details — not scored
Size8 MB51 MB
Age rating4+4+
DeveloperPRECISION TROLLING DATA, LLCTrevor Lewis

Customer experience

Precision Trolling

All ratings917 ratings
Positive88.2%
Neutral4.7%
Negative7.1%
Written reviews265 reviews
Positive89.8%
Neutral5.7%
Negative4.5%

Troll Master Depth Calculator

All ratings73 ratings
Positive68.5%
Neutral9.6%
Negative21.9%
Written reviews44 reviews
Positive65.9%
Neutral11.4%
Negative22.7%

User reviews

Precision Trolling

From 917 App Store ratings

What we love

  • 🚀 Easy to use
  • 🔒 Accurate data
  • 👍 Helpful for trolling
  • 👍 Expands library of lures
  • 👍 Useful even without cell service

Room to improve

  • 🐛 Requires restoring purchase after update
  • 🐛 Slow to update with new lures
  • 🐛 Crashes and glitches
  • 🐛 Limited line and weight options
  • 🐛 Hard to see in bright sunlight

Troll Master Depth Calculator

From 73 App Store ratings

What we love

  • 👍 Easy to use and convenient
  • 🎯 Accurate depth calculations
  • 🎣 Great for trolling
  • 💡 Constantly adding new lures
  • 🚀 Fast and efficient

Room to improve

  • 👎 Limited lure selection
  • 🐛 Buggy in certain configurations
  • 🤷‍♂️ Inaccurate dive curves
  • ❌ Does not work in some configurations
  • 🚫 Upgrade doesn't always unlock features

Bugs and requests

Precision Trolling

Reported bugs

3 issues
  • Restore purchase not working
  • Duplicate data entries
  • Frequent crashes and freezes

Requested features

5 requests
  • Add more lures and line/weight options
  • Improve app stability and responsiveness
  • Add visual dive curve graphs
  • Allow transfer of purchases between devices
  • Provide trolling speed data for lures

Troll Master Depth Calculator

Reported bugs

7 issues
  • App does not work
  • No results found even with inputs
  • Upgrade not working
  • Dive curves are not accurate
  • App throws errors
Show 2 more
  • Doesn't calculate, gives error codes
  • Lures superimposed on other lure types (fixed by text size)

Requested features

6 requests
  • Add saltwater trolling lures
  • Include Yo-Zuri, MagBay, Ilander lures
  • Update and add new baits
  • Add leadcore trolling option
  • More lure selection from major manufacturers
Show 1 more
  • Add Salmo Freedivers and Salmo 5.5's

In-app purchases

11 purchases

Precision Trolling

One-time11
  • Flicker Shad 5$2.99
  • Deep Husky Jerk DHJ-12$2.99
  • Deep Diver Model 800$2.99
Show 8 more
  • Flicker Minnow 9$2.99
  • Flicker Minnow 7$2.99
  • Bandit Deep Walleye 5/8 oz$2.99
  • Smithwick Perfect 10 Rogue$2.99
  • Berkley Flicker Minnow 11$2.99
  • Snap Weight 2 oz.$2.99
  • Snap Weight 1 oz.$2.99
  • Lifetime Package$109.99
3 purchases

Troll Master Depth Calculator

Subscriptions2
  • Monthly Subscription$4.991 Month
  • Annual Subscription$19.991 Year
One-time1
  • Lifetime Purchase$49.99

Questions

Is Precision Trolling free?
Precision Trolling is free to download, with in-app purchases available.
Is Troll Master Depth Calculator free?
Troll Master Depth Calculator is free to download, with in-app purchases available.
Which has better reviews, Precision Trolling or Troll Master Depth Calculator?
Precision Trolling is rated higher. Precision Trolling averages 4.5 out of 5 from 917 ratings, while Troll Master Depth Calculator averages 3.8 from 73 ratings.
Do Precision Trolling or Troll Master Depth Calculator have ads?
Neither Precision Trolling nor Troll Master Depth Calculator shows ads.
Which is updated more often, Precision Trolling or Troll Master Depth Calculator?
Precision Trolling ships an update every 6 weeks, and Troll Master Depth Calculator monthly. Most recently, Precision Trolling was updated on September 27, 2026 and Troll Master Depth Calculator on September 22, 2026.

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