# Kai Tennis — Smarts for Your Ball Machine > Smart tennis ball machine controller for targeted practice and drill simulation. (iPhone/iPad app by Ohana Sports Tech.) - Source: https://appshunter.io/ios/app/kai-tennis/id6748925788 (this page in markdown: same URL + `.md`) - Developer: [Ohana Sports Tech](https://appshunter.io/developer/1828023948) - Category: Sports, Health & Fitness - Price: Free - Rating: 4.90/5 from 33 App Store ratings · 4 written reviews indexed - Age rating: 4+ - Requires: iOS 15.0 · 122 MB - Languages: American English - Released: 2025-09-24 - Data updated: 2026-09-18 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/kai-tennis/id6748925788/reviews.md ## What is Kai Tennis? Stop wasting time fiddling with height, speed, and spin knobs every time you practice. With Kai, just choose the skill you want to improve, set your level, and start your session right from your phone. Kai instantly transforms your ball machine into a smarter training partner — delivering realistic rally simulations, live-play patterns, and advanced drills designed to sharpen your game faster than ever. *** Kai requires a Kai Module to control ball machines -- coming soon!!! *** KEY FEATURES: • Control from your phone or watch Connect Kai to a supported ball machine; then start, pause, or switch drills from anywhere on the court. • Simulate real play Go beyond static feeds — practice rallies, approach shots, footwork patterns, and complex shot sequences designed by pros. • Regularly updated drill library Access an ever-growing library of drills to keep your practice fresh and challenging. • Create your own custom drills Design personalized drills to match your practice goals or favorite rally patterns — simulate any drill you can imagine. • 3D drill visualization See drills come to life with clear animations that show exactly where each shot will land and how to move for it. • Works with Playmate® iGenie and iSmash ball machines Kai adds modern control and intelligence to these trusted machines, so you can bring your club’s machine to life with cutting-edge features. With Kai, every practice session becomes smarter, more efficient, and more fun. No more guessing — just targeted training that helps you improve faster. Download now and start making every ball count! ## Key features - Phone/watch control - Realistic rally simulation - Updated drill library - Custom drill creation - 3D drill visualization - Works with Playmate ball machines ## Recent user reviews (4 of 4) All indexed reviews: https://appshunter.io/ios/app/kai-tennis/id6748925788/reviews.md ### 5/5 — Game changer *2025-10-24* Best tool that it’s available when a personal coach is not accessible. It has helped me tremendously with various drills on different types of shots. It’s the perfect tool and easy to use. ### 5/5 — Game Changing *2025-09-26* Kai Tennis has completely transformed how I practice. The setup was surprisingly quick and easy and within seconds it was connected to the ball machine. I was impressed with how intuitive the drills are. The app makes customizing trainings super accessible and it goes a long way showing you exactly what will happen in each training. I would recommend Kai to anyone looking to improve their tennis game regardless of skill level. ### 5/5 — Must have *2025-09-26* Easy to use and control the ball machine - my practice is so much better and less clunky than the traditional controls on the machine. Love the drills. ### 5/5 — Wow! Made my ball machine sessions so much more effective! *2025-09-24* This makes controlling the machine so easy, as I can do it remotely. I’m also able to do way more complex drills really tailored for what I need. I’m getting so much more out of my time with the ball machine and also want to use the ball machine more! ## Frequently asked questions about Kai Tennis ### Does Kai have ads? Kai does not contain advertisements. The app is free to download and use, with no interruptions from ads during your practice sessions. ### What devices does Kai support? Kai is compatible with iPhone, iPod, and Apple Watch devices, allowing for flexible control on and off the court. ### How often is the Kai drill library updated? The drill library is regularly updated to ensure your practice remains fresh and challenging. Specific update frequency is not detailed, but the app was last updated on March 10, 2026. ### Can I create my own drills in Kai? Yes, Kai allows you to design personalized drills to match your specific practice goals or favorite rally patterns, simulating any drill you can imagine. ### What ball machines are compatible with Kai? Kai currently works with Playmate® iGenie and Ace ball machines, adding modern control and intelligence to these trusted devices. ### What is the age rating for Kai? Kai has an age rating of 4+, making it suitable for a wide range of young tennis players and enthusiasts. ### How does Kai improve my tennis practice? Kai transforms your ball machine into a smarter training partner by delivering realistic rally simulations, live-play patterns, and advanced drills designed to sharpen your game faster. ### Does Kai require any additional hardware? Yes, Kai requires a Kai SmartModule to control ball machines. This module is noted as 'coming soon' in the app description. ## Version history (last 5 releases) ### 1.15.2 — 2026-08-06 - Watch app bug fixes. - Minor UI fixes and other enhancements. ### 1.15.1 — 2026-06-29 - Minor UI fixes and other enhancements. ### 1.14.2 — 2026-05-10 - Minor UI fixes and other enhancements. ### 1.14.1 — 2026-04-30 - Expanded and reorganized the drill library with more skills to practice. - Added support for the new Kai module that is permanently attached to the machine. - Optimized shots for more consistency across levels and ball machines. - Improved the drill editor with easier shot duplication and deletion. - Other bug fixes and UI improvements. ### 1.13.1 — 2026-03-10 - Coaching Mode: Adds more control over drills with quick-access options during sessions.  - UI Enhancements: Helpful onboarding guidance and other additional refinements.  - General stability and minor fixes for a smoother experience. ## Apps similar to Kai Tennis | App | Rating | Price | Category | | --- | --- | --- | --- | | [USTA Tennis](https://appshunter.io/ios/app/usta-tennis/id6443585452) | 2.4 (226) | Free | Sports | | [TennisLink: USTA League](https://appshunter.io/ios/app/tennislink-usta-league/id411621803) | 2.4 (454) | Free | Sports | | [PlaySight](https://appshunter.io/ios/app/playsight/id976177330) | 2.9 (134) | Free | Sports | | [BNP Paribas Open Official](https://appshunter.io/ios/app/bnp-paribas-open-official/id6477405597) | 3.6 (260) | Free | Sports | | [Fuzzy Yellow Balls](https://appshunter.io/ios/app/fuzzy-yellow-balls/id1549661256) | 4.7 (422) | Free | Sports | | [MatchTrack Tennis Score Keeper](https://appshunter.io/ios/app/matchtrack-tennis-score-keeper/id977481057) | 4.6 (280) | Free | Sports | --- *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 2026-09-18.*