# Sub Buddy — Authentic U-boat 'Attack Disc' > Realistic U-boat Attack Disc simulator for WW2 submarine game calculations. (iPhone/iPad app by Zoe Summers.) - Source: https://appshunter.io/ios/app/sub-buddy/id1470196349 (this page in markdown: same URL + `.md`) - Developer: [Zoe Summers](https://appshunter.io/developer/1468119556) - Category: Education, Entertainment - Price: $5.99 - Rating: 5.00/5 from 10 App Store ratings · 2 written reviews indexed - Age rating: 4+ - Requires: iOS 12.0 · 1.2 GB - Languages: American English - Released: 2019-10-26 - Data updated: 2026-08-01 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/sub-buddy/id1470196349/reviews.md ## What is Sub Buddy? Check out the 'Developer Website' link for a 3 1/2 minute promotional video! Sub Buddy brings the most realistic and accurate digital German U-boat Attack Disc to life and, for the first time, to hand-held devices so you can use it just like a real slide-rule! We've designed a unique circular slide rule called the 'TADS Computer' and together the two discs will allow any player of WW2 Submarine games to perform calculations and complex torpedo solutions faster than a calculator or a spreadsheet. It doesn't matter whether you sail US Navy Fleet boats, or German U-Boats, whether you are a lone Silent Hunter, or you play as part of a Wolfpack, these realistic and powerful tools will allow you to become one of the best Aces of the Deep! To help you, we've created 27 unique Training Videos, one for each specific task or operation, so you can easily and quickly learn the immense power these discs provide. To make this as responsive as possible, especially in the heat of battle, we've chosen to bundle all 27 videos right into the app! That means you never have to worry about Wi-Fi or data signals, lag or streaming and you can cram in a quick refresher or learn a new technique on the tube, waiting for a taxi or in the queue at the Post Office; so you can always get the information you need (with Picture in Picture on Apple iPad, so you can follow along) right when you need it! This does mean that the app is 1.32GB in size, so make sure you are on Wi-Fi before you begin your download. Another unique feature is our 'Visual AoB Helper' - or 'Angle on Bow' helper - that you can use to visually replicate what you see in game and get an accurate AoB reading to within a single degree! We also allow you to change the time of day and weather so you can best match the conditions in-game! Yet another unique feature, is that we have designed this app, from the very beginning, to fit you, the user, the best way possible. We support Left and Right handed modes, with all the primary buttons available comfortably within the sweep of your dominant thumb, as well as the ability to dynamically re-order the menu system to put what you need, where you need it most; and these settings are always automatically saved and changeable at any time without having to find buried settings or options. We sincerely hope you love these discs as much as we do and believe us, once you become skilled in their use, you will be able to do almost any calculation with them - ‘submarine sim’ or even real life - so quickly you'll amaze your friends and fellow players. Please let us know what else you'd like added to your Sub Buddy. Visit poutybatface.com/subbuddy We also treasure our privacy, as well as all yours, and we guarantee you no data is captured or stored and this app makes no network calls of any kind. NOTE: Touch markers on the videos are only there for demonstration purposes only. They are not in the actual app. ## Key features - Realistic U-boat Attack Disc simulation - Circular slide rule for torpedo solutions - 27 bundled training videos - Visual Angle on Bow helper - Adjustable time of day and weather - Left and right-handed modes - Customizable menu system ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/sub-buddy/id1470196349/reviews.md ### 5/5 — Fantastic App! *2025-10-17* Love playing SH3 and Uboat with this app. With this in hand, I can land accurate shots using historical methods without ever opening the recognition manual. I just wish they made an Is-Was for when I’m playing Fleet Boats like SH4. ### 5/5 — Brilliant App *2022-10-25* Spent many hours just navigating submerged. This app is really useful. Thanks for making!! **Developer response:** Thank you so very much for leaving such a lovely review. I'm so glad you're enjoying it! ## Frequently asked questions about Sub Buddy ### What is Sub Buddy? Sub Buddy is a digital replica of a German U-boat Attack Disc, designed to function as a realistic slide rule for calculating torpedo solutions in WW2 submarine games. It aims to provide faster calculations than traditional calculators or spreadsheets. ### How does Sub Buddy help with calculations? Sub Buddy uses a unique circular slide rule called the 'TADS Computer' to perform complex torpedo solutions. It's designed to be used just like a real slide rule, allowing for quick and accurate calculations within submarine simulation games. ### Does Sub Buddy have ads? No, Sub Buddy does not contain advertisements. It is a paid application, and the developers have stated that no network calls are made, ensuring no data is captured or stored. ### How many training videos are included with Sub Buddy? Sub Buddy includes 27 unique training videos, one for each specific task or operation. These videos are bundled directly into the app, meaning they can be accessed offline without needing Wi-Fi or data signals. ### Can I use Sub Buddy offline? Yes, all 27 training videos are bundled within the app, allowing you to learn and practice offline. This means you can access the information you need without worrying about Wi-Fi or data signals, making it convenient for use anywhere. ### What is the 'Visual AoB Helper' in Sub Buddy? The 'Visual AoB Helper' allows you to visually replicate what you see in-game to get an accurate Angle on Bow (AoB) reading within a single degree. You can also adjust the time of day and weather to match your in-game conditions. ### Is Sub Buddy suitable for left-handed users? Yes, Sub Buddy is designed to fit the user with support for both left and right-handed modes. Primary buttons are placed comfortably for the dominant thumb, and the menu system can be dynamically re-ordered and saved. ### What devices does Sub Buddy support? Sub Buddy is available for iPhone, iPad, and iPod. It has an age rating of 4+ and was last updated on May 1, 2023. ## Version history (last 4 releases) ### 1.0.3 — 2023-05-01 UPDATED: Sub Buddy 1.0 now supports all Apple iPhones and iPads from iOS 12 - iOS/iPadOS 16.4.1! Slight layout changes to support iPhone 14. ADDED: Thanks to Apple's amazing Catalyst framework, the iPad version can now run natively on macOS! FIXED: A problem that can happen where orientation changes prevent the menu and settings cog from working - our deepest apologies for not catching this sooner! Coming Soon: Sub Buddy 2.0 will be released shortly that takes advantage of significant advances in the iOS/iPadOS/macOS platforms. As such it will be limited to devices running iOS 16+ It will also have some much requested new features and some very nice new capabilities! Please keep an eye out on our website or the App Store for Sub Buddy 2.0! ### 1.0.2 — 2020-10-25 Fixed: There was an issue with the Splash screen not showing up correctly on devices with iOS/iPadOS 14+ installed. This has been fixed. Apologies for the delay. ### 1.0.1 — 2019-10-27 Fixed : Picture-in-Picture button might not appear after transitioning from PiP to Fullscreen Video. Fixed : Picture-in-Picture mode bug only found in iOS 13.1.x ### 1.0.0 — 2019-10-26 No release notes. ## Apps similar to Sub Buddy | App | Rating | Price | Category | | --- | --- | --- | --- | | [Dart Compiler - Run .dart Code](https://appshunter.io/ios/app/dart-compiler-run-dart-code/id1554903093) | — | Free | Education | | [1K62 Lathe Simulator](https://appshunter.io/ios/app/1k62-lathe-simulator/id1500880695) | 5.0 (2) | $4.99 | Education | | [Florida CDL Permit Practice](https://appshunter.io/ios/app/florida-cdl-permit-practice/id1584798434) | 4.8 (386) | Free | Education | | [Learn Persian - EuroTalk](https://appshunter.io/ios/app/learn-persian-eurotalk/id515972036) | 3.0 (1) | $7.99 | Education | | [Go Compiler - Run .go Code](https://appshunter.io/ios/app/go-compiler-run-go-code/id1554422471) | 3.0 (3) | Free | Education | | [campusM](https://appshunter.io/ios/app/campusm/id416335099) | — | Free | Education | --- *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.*