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Frequently Asked Questions
General
CoachEx is a tennis coaching app that records your swings and analyzes them to provide personalized coaching feedback live, in your ear while you practice, or later when you are reviewing the recordings. CoachEx analyzes the mechanics of your swing and generates coaching feedback tailored to what you are actually doing. Unlike general instruction such as YouTube videos or web articles, the feedback is based on your own swings.CoachEx also allows you to have a conversation with your coach. You can discuss the feedback while you are on the court practicing, or later when you are relaxing at home. You can ask follow-up questions, request additional tips, ask for a different explanation, or ask to see the technique demonstrated in video form. The system can generate custom instructional videos that combine your swings with professional demonstrations.
It's the Coaching.Many tennis apps that claim to provide coaching focus on video recording, generic tips, gameplay statistics, or complicated numerical stroke analysis. While these tools can be useful, they leave you, the player, to interpret the results on your own and decide what to change. They leave you to coach yourself. CoachEx is designed to provide an interactive, personalized coaching experience that is laser-focused on helping you improve your technique.CoachEx's unique capabilities include:Live coaching, while you practice, modeled after a private lesson with a dedicated human coachRecord swings from rallies and practices. Later at home ask Coach for feedback. Feedback is personalized to you based on your swings rather than canned, generic instructionHave a conversation with your Coach. Ask for clarifications. Request more detail, or a demonstration. Talk through different ways to think about the feedback and make it actionable for you. Your Coach is there to help you succeed.Custom instructional videos assembled specifically for you that demonstrate the correct techniques by comparing your actual performance with professionals. A practice feedback loop that allows you to adjust and try again as often as you like during the same Live Coaching sessionProgress and consistency tracking so you can see how your technique develops over timeA personal video library of tips, lesson recaps, and recorded swings full of coaching advice tailored to your needsCoachEx is designed to help you improve, not just give you stats and diagrams and leave the rest to you.It's the Coaching.
Using CoachEx is designed to be perfectly natural - just like talking with a personal coach.Set your phone off to your side so it can see you and make sure you're the only person in frame. CoachEx will record anyone it can see. Set up ideally with a tripod but you can also place it on the ground propped against something like a water bottle. Put in your earbuds so you can hear your coach and ask questions. Start practicing by tapping the Lesson tab, and then Start Lesson. Your practice can be on court with a partner, a ball machine, or during solo serve practice. You can even practice shadow swings without a ball at home.As you swing, CoachEx provides verbal coaching guidance through your earbuds based on the mechanics of your motion, and you can ask your Coach questions. You can then adjust and continue practicing.CoachEx automatically identifies and saves individual swing clips, making it easy to review each swing later with Coach's feedback.Improvement in tennis comes from repetition with feedback: Swing → feedback → adjust → swing againCoachEx helps you repeat that loop faster using live coaching in the moment, while you practice.There is another option, if you prefer to practice without the coach. Simply tap the Record tab, then Start Session. CoachEx will now record all your swings, but without any coaching. Later, you can review these swing recordings in the Review tab, and use the Ask Coach button to call up your coach, get feedback, and discuss.
That works. CoachEx is watching you, not the drill, so hitting with a partner, a coach, or a ball machine is all fine.The one thing that matters is framing: set the phone to your side so you're the only person in it. Your partner across the net is no problem. If two people are in frame, some of their swings will be saved to your library too.
We'd stick to practice for now. CoachEx records every swing it can see, but it can't yet tell one player from another, so in a match whoever else is in frame would end up mixed into your swing library alongside you.If you want to record while you play, set your phone up so you're the only person in shot. Your hitting partner can be across the net or out of frame, and everything you hit will be saved as normal. We're working on adding match play analysis so stay tuned!
CoachEx analyzes your swing and provides guidance tailored to your technique. Instead of guessing what to change, you receive actionable feedback based on what you are actually doing.When you use live coaching in a Lesson, you get audio feedback through your earbuds while you are hitting, just like with a human coach. Because you can apply the feedback immediately, CoachEx helps you move more quickly through the improvement cycle: Swing → feedback → adjust → swing againSwings are always recorded, so if you prefer to get feedback later, you can select which swings to get feedback on and tap on Ask Coach to get analysis and discuss what to do differently.
We think so, and so do our many satisfied customers.CoachEx is not a full replacement for the judgment of experienced human coaches. A talented human coach giving you a private lesson is hard to beat. But let's be real. Human coaches offering private lessons: are expensivecan be hard to schedule aren't usually available to watch you practiceusually make you come to themGroup lessons are less expensive, but have the same limitations. And as anyone knows who's taken a lesson with 4, 8, or more students: you rarely get any personalized feedback. At larger class sizes group lessons are mostly just exercise.CoachEx focuses on something technology can do very well: analyzing body motion and comparing it to effective technique. CoachEx uses AI to deliver coaching that fits your schedule, budget, and location preferences.By combining high speed motion analysis with AI-generated coaching guidance, CoachEx can identify areas where your swing mechanics differ from proven technique and work with you to help you understand what to adjust. Unlike other tennis apps that try to wow you with stats and gee-whiz visuals, CoachEx is focused on you, and helping you get the advice you need to improve.
Yes. CoachEx analyzes your individual swings, which means the feedback is based on what you are actually doing rather than a generic model of how a swing should look, or what only the top pros can do.Players often find that simply being able to review their swings clearly using video playback is helpful. Then on top of that CoachEx gives you guidance tailored to your motion so you can understand how to adjust your technique much more quickly.
CoachEx analyzes the mechanics of your swing using motion analysis and computer vision technology. The system looks at key elements of the stroke such as body movement, timing, positioning, and sequencing to identify areas for improvement. Your swing is compared against a large body of player data, so the feedback reflects how the stroke is actually performed rather than a generic template.Like any coaching tool, it works best as part of regular practice and experimentation. Many players find it especially valuable because the feedback is based on their actual swings, not general advice.
CoachEx tracks your swings and practice sessions so you can see how your technique develops over time. Tap the Review tab, then select Progress to see how each of your swing types have improved over time.The system can measure trends in swing quality, improvement in specific skills, and consistency, helping you understand whether the adjustments you are making are leading to better performance.
Yes. CoachEx builds a personalized library of coaching tips based on your swings and the guidance you receive. This allows you to easily review the suggestions and drills that apply to your technique.Over time, this becomes a customized set of coaching insights tailored specifically to your game. You can find your collected Tips in the Review Tab.
Yes! As long as you can swing a racket, you can get coaching.While most customers use CoachEx on a court with tennis balls, our customers are quite creative, and these use cases are fully supported:Working with a backboard, garage door, or wallShadow swings (no ball) in any reasonably open space such as a living room or hotel roomToss drills with a ball (partial or no swing) anywhere you like
Yes! CoachEx can analyze both real swings and shadow swings. This means you can work on your technique even when you don't have access to a court, or where it wouldn't be practical to hit a ball, such as your living room or a hotel room. Pro tip: if you are tight on space at home, try using the rear camera on your phone, which gives CoachEx access to the wide angle lens.
Yes. Every swing is saved as its own clip. Open Review, then Videos, and ask your coach for feedback on any swing you like.If you used Live Coaching during a Lesson, that guidance stays available too. Go back over it whenever you like, and compare your swings against professional demonstrations to see what to work on next.
Typical online instruction provides general advice that may or may not apply to your swing. It's great to watch the pros do their thing, but the rest of us are nowhere near that level.
CoachEx analyzes your swing and provides guidance tailored to what you are actually doing, and what you can absorb at your skill level.
Only you can be the judge of that, but human coaches are pretty awesome, especially if you have a regular coach you work with in private lessons! That said, if a personal human coach is out of reach for you for cost, location, or scheduling reasons, CoachEx AI coaches are ready to help you out!CoachEx AI coaches remember everything you do with CoachEx, so over time they get to know you pretty well. CoachEx coaches can build lesson plans and work with you over multiple sessions to dial in something you are working on. They are available 24x7, and travel with you everywhere you go.CoachEx can also be valuable as an adjunct to your human coach. Many players use it between lessons to reinforce what they are practicing with their human coach, while others use it as a convenient way to receive additional personalized guidance during their own practice sessions.
For a limited time, everything. All users currently have the full experience, Premium features included.CoachEx watches while you practice, picks out each individual swing, crops the clip so it features just you, and files it in your library by swing type and date, so you're never scrubbing through an hour of footage to find one forehand.
Yes, although functionality will be limited. Without a network connection you can:record new swings for later analysisreview your past stats and progresswatch videos stored on your deviceview existing Tip videos that include recorded coaching adviceCoaching guidance itself requires a network connection. If you record swings while offline, you can receive coaching later once you reconnect.
No! Most players simply place their phone to the side of the court so the camera can see their full body and swing. A tripod or phone stand can help keep the camera stable, but is not required. In a pinch, you can prop the phone up against a water bottle or bag.Aim your phone so it can see all of you as you move around. Landscape orientation is best. Your coach will guide you on where to stand if you're having trouble.Once you start a session, CoachEx automatically detects and saves individual swing clips and organizes them so you can review them easily. Coach will tell you if you move out of view.
For recording swings with optional coaching later, you need:your phone (iPhone 11 or later)a tennis racketa tripod (optional) - a tripod is better but not necessarytennis balls (optional) - you can do shadow swings anywhere and still get coachingFor live coaching, you also need earbuds (to listen to and chat with your coach as you practice)
For best results:Position your phone to your side where it can see you best, perpendicular to the direction of ball travel.if you are right-handed, position your phone to your right side so your Coach can get the best view of your swingif hitting backhand strokes, position to your left sideif you are left-handed, reverse the positions abovePlace the phone far enough away to capture your full body and the entire swing. A minimum distance of about 10–15 feet (3–5 meters) is recommended.Rotate the phone to landscape orientation so the coach can track your movement as you move across the court.Using the front camera can make it easier to check framing and review feedback when you walk up to the phone.For the most consistent results, use a tripod and position the camera about 3 feet (1 meter) off the ground.If you are in a tight space such as a hotel room, you can flip the camera to the rear camera, which will allow CoachEx to use the wide angle lens so you can stand closer to your phone.Keep other players out of the shot. CoachEx saves the swings of anyone in frame, so if a partner is in view their swings will land in your library too.
Yes. Your videos are private to your account and securely backed up on our servers if you are a subscriber. You control whether videos are backed up to our cloud and whether we may use your videos and other data to improve our coaching system. You can read more about how seriously we take your privacy from our Privacy Policy and Privacy FAQ.
The video analysis happens primarily on your device. The results of that analysis are numerical data that are then used by our cloud-based AI coaching system to generate coaching guidance. We don't send your videos to the cloud for analysis. As a subscriber, you can take advantage of cloud backup of your videos. All all times your videos are private and under your control.You have the option to allow your videos to be sent anonymously to our system to improve coaching accuracy. If you allow this, your videos are anonymized and all reference to you is removed. Videos uploaded for this purpose are only ever used for system improvement.At times, for context in a Live Coaching session (i.e. to see what is going on) CoachEx may take a snapshot of what it sees through your camera so that our cloud-based AI Coaches can provide you the best coaching experience. This data is discarded after it is used.
CoachEx is designed to give you more flexibility for how and when you practice.Many players use CoachEx for short coaching sessions of 10-20 minutes, multiple times a month. Because it works with shadow swings, you can practice at home, on the court, or anywhere you have a few minutes — with coaching available whenever you want it.You might use CoachEx to:Get Live Coaching during solo practice to focus on improving a specific part of your game, such as your serveWork through a basket of balls on one stroke with Live Coaching running, then review the whole set afterwardsPractice something your human coach showed youGet some quick Live Coaching feedback before a match while waiting for your opponentDo some reps in your hotel room while traveling to keep your edge Whether you have just a few minutes or time for a full session, CoachEx makes it easy to get meaningful practice in.The key is: More coached reps → better feedback → faster improvement
At the moment CoachEx is focused on coaching you to improve your swing, whether you're drilling or hitting with a partner. Feedback on your movement on the court, ball placement, shot choice, game strategy, etc. might come in the future if there is customer demand. If you love CoachEx and want it to do more, let us know at support@coachexmachina.com, or leave a comment in the App Store.
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