How we chose and how to read this
This guide was reviewed on November 7, 2026 using each developer’s current App Store listing, help center, or product site. It is a positioning review, not a hands-on accuracy test, and it does not quote prices because store prices differ by region and change often. Confirm tiers and trials with each developer.
We grouped the apps by what you get back after you film a swing. That is the decision that matters: the same clip can produce a 3D biomechanics report, a two-second replay for your coach, spoken feedback at the range, or one fix with a drill. Grassy makes one of those, so read the Grassy entry with that in mind and check the tradeoff line on every pick.
What an AI golf swing analyzer actually does
An AI golf swing analyzer takes a phone video, finds your body in each frame, and turns the motion into positions and measurements. From there the apps diverge. Some stop at measurement and leave interpretation to you or a coach. Some compare you with tour swings. Some speak to you between swings. A few try to behave like a coach: pick a priority, explain it, and give you something to practice.
None of them are launch monitors. A video analyzer does not know your club speed, ball speed, or spin. If you need those numbers, you need hardware, and most of the apps below can live alongside it.
- Measurement first: Sportsbox 3D Golf, Swing Profile
- Coach-connected video: V1 Golf
- Spoken feedback at the range: Swing Coach
- Inside a bigger golf app: 18Birdies AI Swing Analyzer, GolfFix
- One fix plus a coach you can ask, inside a caddie and stats app: Grassy
The best AI golf swing analyzer app for each priority
Start with the job you want done. The tradeoff line on each pick is the part to read twice.
Grassy Swing Lab
Best for: One clear fix and a drill, with an AI coach to ask, in the same app as your caddie and statsFilm one swing in the iPhone app or upload a clip to Swing Lab on the web. Grassy tracks the body on every frame, compares positions such as spine tilt, head sway, and hip turn with tour ranges, plays the swing beside a synchronized 3D model, and names one change with a drill. Grassy, the AI golf coach, answers follow-up questions. The same app runs an AI caddie during Course GPS Beta rounds and keeps your stats, so the coaching can draw on your game.
Tradeoff: The full app is currently on iPhone, with web uploads for the analyzer. It is video-based with no club or ball data, it does not produce a multi-angle 3D biomechanics report, and live in-session coaching is on a waitlist.
Try the Grassy AI swing analyzer →Sportsbox 3D Golf
Best for: 3D biomechanics from a single phone videoSportsbox converts a 2D swing video into a markerless 3D model you can view from multiple angles, with body measurements used by many coaches. It is the reference point for sensor-free 3D data on a phone.
Tradeoff: It is a measurement tool more than a coach: the output is data to interpret, often with an instructor. Face-on slow-motion footage is expected, and the richer tiers are aimed at coaches.
Sportsbox 3D Golf on the App Store →V1 Golf
Best for: Working with a human coach on videoV1 Golf is a long-standing video analysis app with slow motion, side-by-side comparison, drawing tools, and a tour swing library. Its paid tiers connect you with V1 coaches who return video lessons with voiceover and telestration.
Tradeoff: The feedback loop is record, send, wait. The AI features are secondary to the coach relationship, and detailed lessons are purchased separately from the app tiers.
V1 Golf on the App Store →18Birdies AI Swing Analyzer
Best for: Swing analysis inside a broad GPS and scoring app you may already use18Birdies records or imports a swing face on or down the line, compares key positions with professional swing models, flags priority areas, and suggests drills, all inside an app that also does GPS, scoring, and games.
Tradeoff: The AI Swing Analyzer is part of 18Birdies Premium, and human Pro Swing Analysis is sold separately. There is no synchronized 3D replay.
18Birdies AI Swing Analyzer help article →GolfFix
Best for: Automatic swing capture and structured practice modesGolfFix detects and records the swing from address to finish, imports existing video, and adds practice features such as tempo and rhythm drills and monthly reports on its paid tiers.
Tradeoff: The most useful analysis and drill modes sit in Premium, and the tier names have changed more than once, so check the current listing.
GolfFix on the App Store →Swing Profile
Best for: Hands-free range practice with instant replaysSwing Profile films hands-free on a phone holder, auto-trims each clip to the two-second swing, and plays it back in slow motion with automatic swing-plane lines and sequencing. It is fast, light on storage, and good for repetition work.
Tradeoff: Replay and plane lines are the product. Interpretation and a practice plan are up to you or your coach, and it is an Apple-only app.
Swing Profile on the App Store →Swing Coach (Swing Intelligence)
Best for: Spoken AI feedback after every swing at the rangeSwing Coach films each swing and responds with voice feedback within seconds, so you can keep hitting without picking up the phone. It is the clearest example of range-session coaching in the category.
Tradeoff: Feedback is built around the range session rather than a longer plan, and it does not connect to on-course play or your scoring stats.
Swing Coach official site →How to film so any analyzer works better
Body tracking is sensitive to framing and light, whichever app you use. The same habits help all of them.
- Down the line or face on, phone at about hip height, on a small tripod or a steady holder.
- Whole body in frame from address to finish, with the club visible at the top.
- Slow motion or 60 fps when your phone offers it; motion blur hurts every tracker.
- Daylight or an evenly lit bay, and avoid heavy backlight or a busy background.
- One swing per clip. Trim before uploading if the app does not auto-trim.
Where Grassy fits in this list
Grassy is the pick when you want the analyzer to behave like a coach: one priority, a drill, and a conversation. It is also the pick if you want the swing work and the on-course work in one place, because the same app runs an AI caddie during Course GPS Beta rounds, keeps your stats, and ranks your courses.
Grassy is not the pick if you want a multi-angle 3D report to hand to an instructor, a human coach built into the app, spoken feedback between range swings, or an Android app today. Those are different jobs, and the apps above do them well.