BaySpeed vs Eagle
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BaySpeed
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BaySpeed turns your Topgolf bay into a ball-flight lab. Topgolf shows you where the ball landed. BaySpeed reveals how fast it was going when it left your club, how high it flew, and how much of that distance was carry vs roll — all reverse-engineered from your existing game history through a physics simulation calibrated against Toptracer data. Sign in with your Topgolf account and import your full history in seconds. Every shot gets analyzed: ball speed in mph, launch angle, descent angle, carry vs roll breakdown, kinetic energy, and impact force. WHAT YOU GET FREE — Sign in with Topgolf and import your full game history — Your 3 most recent sessions, fully analyzed — Tap-to-inspect trajectory replays color-coded by speed — Speed distribution chart for every session — Per-shot impact physics: ball speed, launch angle, force, kinetic energy — Sample data mode if you want to explore before signing in UNLOCK PRO (one-time purchase, no subscription) — Full session history, not just your 3 most recent — Personal records across speed, distance, energy, impact force, and session score — Improvement trajectory — track your gains to the mph per session — Recent form vs prior — see if you're hot right now — Momentum — acceleration phase and current improvement streak — Milestones — the first time you crossed 70, 80, 90, 100, 110 mph — Forecast — when you'll hit each speed tier if your pace holds — Total energy delivered — kilojoules of kinetic energy across every shot — Speed percentiles — p50, p75, p90, p95, p99 — Shareable stat cards for any section HOW THE PHYSICS WORK BaySpeed runs a Newtonian trajectory simulation with quadratic drag, Magnus lift, and spin decay, then binary-searches for the ball speed that produces the measured Topgolf yardage given your bay floor height. The drag coefficient is speed-dependent and calibrated against Toptracer ground truth. Speeds are estimates (±10-15%) — not the same as a launch monitor, but a lot more interesting than just yardage. PRIVACY Your credentials go directly to Topgolf's servers — BaySpeed never sees your password. Game data is cached locally on your device. No ads, no third-party tracking, no analytics SDKs. NOT AFFILIATED WITH TOPGOLF BaySpeed is an independent third-party app that uses your Topgolf account to access your own game data. Topgolf is a registered trademark of its respective owner. BaySpeed is not affiliated with, sponsored by, or endorsed by Topgolf.
Eagle
This app uses AI to analyze your golf swing, providing instant, detailed feedback to help you improve. It breaks down your motion, offers personalized tips, and tracks your progress, acting like a pocket swing coach.
- AI swing analysis
- Body tracking
- Slow-motion review
- Personalized tips
- Progress tracking
- Simple recording
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Improve your golf swing with AI-powered analysis that turns your phone into a personal swing coach. Just record your swing and get instant, easy-to-understand feedback that helps you play better golf. Eagle breaks down every part of your motion, from takeaway to follow-through, using advanced AI to detect posture, tempo, alignment, and swing plane. Whether you're a beginner working on the basics or a seasoned player chasing lower scores, Eagle gives you the clear, actionable guidance you need. KEY FEATURES - AI Swing Analysis: Record a swing and receive detailed frame-by-frame feedback in seconds. - Body Tracking: See your posture, angles, and body positions mapped throughout the swing. - Slow-Motion Review: Scrub through your swing frame by frame to study every detail. - Personalized Tips: Get targeted drills and suggestions based on what your swing needs most. - Progress Tracking: Save your swings and watch your improvement over time. - Simple Recording: Capture swings quickly with an easy, guided setup. WHY GOLFERS LOVE EAGLE No more guessing what went wrong on your last swing. Eagle gives you the kind of feedback you'd expect from a coach, right in your pocket, anytime you practice. Work on your game at the range, on the course, or at home. Build a consistent, repeatable swing by understanding exactly what to fix and how to fix it. Track your tempo, refine your mechanics, and gain the confidence to swing freely. WHO IT'S FOR - Beginners learning the fundamentals - Amateurs looking to lower their handicap - Experienced players fine-tuning their mechanics - Anyone who wants clear, data-driven swing feedback Start analyzing your swing today and take the guesswork out of getting better. TERMS OF SERVICE: https://eagle-golf.github.io/eagle/terms.html Eagle offers optional subscriptions that unlock full access to premium analysis features. Subscription details are shown in the app before purchase. * Accessing these features requires a paid subscription. Subscription terms can be found in-app.
Screenshots
Verdict
BaySpeed and Eagle are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. BaySpeed sells 1 one-off in-app purchase and Eagle sells 1 in-app purchase, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Both ship on a similar rhythm, roughly every 2 days. The most recent releases landed on September 30, 2026 and September 29, 2026 respectively.
| Parameter | BaySpeed | Eagle |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.8 (70 ratings) — better |
| Positive reviews | — | 69.2% of reviews |
| Number of ratings | — | 70 — better |
| Update frequency | Every 2 days | Every 2 days |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone | iPhone |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 3 MB | 166 MB |
| Age rating | 4+ | 4+ |
| Developer | Kevin Tang | W185 Holdings |
In-app purchases
BaySpeed
- BaySpeed Pro$6.99
Eagle
- Eagle - Unlimited7 Days trial$6.997 Days









