# Troll Master Depth Calculator — The Future of Trolling! > Fishing app to calculate lure depth and create dive charts. (iPhone/iPad app by Trevor Lewis.) - Source: https://appshunter.io/ios/app/troll-master-depth-calculator/id1459946758 (this page in markdown: same URL + `.md`) - Developer: [Trevor Lewis](https://appshunter.io/developer/1459946757) - Category: Sports, Utilities - Price: Free with in-app purchases - Rating: 3.80/5 from 73 App Store ratings · 44 written reviews indexed - Age rating: 4+ - Requires: iOS 12.0 · 51 MB - Languages: American English - Released: 2019-04-21 - Data updated: 2026-08-01 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/troll-master-depth-calculator/id1459946758/reviews.md ## What is Troll Master Depth Calculator? 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 ## Key features - 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 ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Annual Subscription | $19.99 | per year | | Monthly Subscription | $4.99 | per month | **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Lifetime Purchase | $49.99 | one-time | ## Recent user reviews (10 of 44) All indexed reviews: https://appshunter.io/ios/app/troll-master-depth-calculator/id1459946758/reviews.md ### 3/5 — Update selection !!! *2025-06-22* You guys need to update and add the new baits that are being used , the other apps stay up to date you don’t you ???? ### 5/5 — Troll app and customer support *2025-05-26, version 15.2* Best trolling app I’ve seen and used, numerous lure brands to choose from. I purchased the lifetime subscription on an android phone switched to apple contacted support and received a code to transfer membership, big props to them. Highly recommend app and good support! ### 5/5 — Best app for trolling and phenomenal customer service *2024-03-04, version 15.1* Very in depth and accurate. Many options from line type speed lure even divers. I bought the lifetime edition a while ago. Unfortunately, that was on my android and the purchase wouldn’t transfer to my iPhone. I wrote a quick little email to the developers and they quickly gave me a gift card code to redeem my lifetime membership on my iPhone. Big time kudos to this app. ### 3/5 — Add saltwater lures please! *2023-08-10, version 15.1* Too few saltwater trolling lures from Yo-Zuri, nothing from MagBay or Ilander, which are most popular in Florida! ### 3/5 — Doesn’t work in some configurations. *2023-07-15* Doesn’t work unless you select a pre-loaded lure option or diver. For example, you can’t enter custom inputs for something like lake trout where you might use a mega jig weighing an ounce or more, combined with a 4 or 8 oz trolling weight (fishing from a kayak, not using downriggers. This configuration using a 4 oz weight and 100 feet back results in a 40 foot depth.) When you hit ‘calculate’, it says ‘No results found; enter a diver or trolling weight’, even though you have already entered the trolling weight. Could be just a minor bug that needs to be worked out. Seems to work quite nicely if you enter a diver or pre-set lure. Wouldn’t have paid the $50 if I would have known this, however. **Developer response:** Thank you for your review. If you have selected a jig as the lure, please make sure that you enter the lure weight. I suspect this is the issue that you are finding. Please email us if you have any additional questions at trollingcalculator@gmail.com. Thank you! ### 5/5 — Trolling ap *2023-05-15* Great ap to use very simple to use and great customer support on trying to switch ap to a different phone ### 5/5 — Works well *2022-09-29, version 14.3* I have this app and like how convenient it is. The lures selection is great and continues to grow. It is easy to use and I find myself referencing it whenever I’m trolling. ### 1/5 — Not Good ! *2022-07-29* Hardly any lure selection ### 1/5 — DOES NOT WORK *2022-06-02* I upgraded the app for $6.95 (one month). It does not work. I tried a variety of realistic data and the app is not able to provide a solution (line length). There must be a bug in the latest version of the app. ### 5/5 — It’s a great app. *2022-05-27* I love it a lot it’s very helpful. I can use it when ever I want. It helps set My baits to the right depth. ## Frequently asked questions about Troll Master Depth Calculator ### What does the Troll Master Depth Calculator app do? This app is designed to help anglers calculate the precise trolling depth of their fishing lures. It uses physics-based calculations and allows users to input various factors such as line type, lure selection, trolling speed, and weight to determine how deep the lure will run. It also enables users to construct their own dive charts for planning fishing trips. ### What are the key features of this app? Key features include the ability to calculate lure depth with precision, create custom dive charts, select from a wide variety of lines, lures, and trolling weights, and adjust numerous factors like line length, speed, leader length, and rod height. The calculations are verified through on-water testing. ### How much does the Troll Master Depth Calculator app cost? The app is available for free but includes in-app purchases. This suggests that while the core functionality may be accessible without cost, certain features, additional lures, or advanced options might require a purchase. ### Who is this app intended for? This app is ideal for anyone who fishes in saltwater, freshwater, or any environment where trolling is a primary fishing method. It is particularly useful for anglers targeting species like walleye, trout, salmon, striped bass, tuna, and wahoo, among others. ### Can I use this app to plan my fishing trips? Yes, the app allows you to construct your own dive charts at home. By inputting different variables, you can see the projected depth of your lure and plan your trolling strategies effectively before you even get on the water. ## Version history (last 5 releases) ### 15.2 — 2025-04-24 We added a monthly subscription option and increased the functionality of the free version of the app. ### 15.1 — 2023-06-02 Updates to fluorocarbon lines ### 15.0 — 2023-03-25 Fluorocarbon lines added! ### 14.3 — 2021-05-13 New lures! Kilam Custom Baits Supa6, Bill Lewis Rattle Trap (3 inch), Xtackle XTDR4 and XTDR6, Rapala Floaters F9, F11, and F13 ### 14.1 — 2020-10-08 Minor updates ## Apps similar to Troll Master Depth Calculator | App | Rating | Price | Category | | --- | --- | --- | --- | | [Minn Kota i-Pilot Link](https://appshunter.io/ios/app/minn-kota-i-pilot-link/id1033023962) | 2.5 (55) | Free | Sports | | [FishDonkey](https://appshunter.io/ios/app/fishdonkey/id1170550251) | 4.0 (84) | Free | Sports | | [LakeMonster: Fishing AI](https://appshunter.io/ios/app/lakemonster-fishing-ai/id1420223013) | 4.5 (674) | Free | Sports | | [Trolling Angles](https://appshunter.io/ios/app/trolling-angles/id6446864442) | — | Free | Sports | | [Precision Trolling](https://appshunter.io/ios/app/precision-trolling/id873119178) | 4.5 (917) | Free | Sports | | [RipaLip University](https://appshunter.io/ios/app/ripalip-university/id1455398834) | 3.4 (39) | Free | Sports | ## More apps by Trevor Lewis - [HuntSpot](https://appshunter.io/ios/app/huntspot/id1531614219) - [Hunting Leases](https://appshunter.io/ios/app/hunting-leases/id1659302486) - [BlastCam](https://appshunter.io/ios/app/blastcam/id6502535752) - [Hook Reports](https://appshunter.io/ios/app/hook-reports/id6742808092) All apps by Trevor Lewis: https://appshunter.io/developer/1459946757 ## Related topics [trolling](https://appshunter.io/ios/topics/trolling) · [walleye now](https://appshunter.io/ios/topics/walleye-now) · [precision trolling](https://appshunter.io/ios/topics/precision-trolling) · [precision trolling data](https://appshunter.io/ios/topics/precision-trolling-data) · [trolling app](https://appshunter.io/ios/topics/trolling-app) · [trolling depth](https://appshunter.io/ios/topics/trolling-depth) · [trolling angles](https://appshunter.io/ios/topics/trolling-angles) · [minn kota](https://appshunter.io/ios/topics/minn-kota) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-01.*