Search "best free tennis stat tracker" and you'll find three kinds of answers: marketing pages from apps that aren't actually free, Reddit threads from 2019 recommending tools that have shut down, and forum posts asking the same question every six months. The honest answer in 2026 is more boring and more useful: there are about four genuinely free options, each is good at one specific thing, and the word free hides different fine print in each one.
I run AceSense, so this includes us — but it also includes our competitors and the free Apple Watch options. I'll tell you what each one actually gives you for zero dollars.
TL;DR
| App | Free tier covers | Hardware | What's not free |
|---|---|---|---|
| TennisKeeper | Match score, shot counts, swing speed | Apple Watch | Video AI, multi-match library limits |
| Swing Pro | Basic Apple Watch shot counts | Apple Watch | Pro analytics, history depth |
| AceSense free tier | 3 full per-shot AI reports per month | Phone only | Unlimited analyses, multi-coach seats |
| SwingVision free tier | Limited match recording, watermarked | iPhone (+ optional watch) | The actual analytics, line calling, clean export |
| Apple Workout app | Calorie + duration tracking | Apple Watch | Anything tennis-specific |
If you take one thing from this post: free Apple Watch tennis apps and free tennis video AI are different markets. A tracker that counts shots on your wrist is a much smaller engineering problem than a model that analyzes your forehand technique from video. Don't expect the same product.
What the forums actually ask
The most-cited free-tier discussions on tennis forums share a pattern. From the Talk Tennis thread "Any Free Video Analysis Apps?" (source), the question is almost always: "Coach's Eye shut down — what replaced it?" The honest answer that thread converges on: there is no perfect free replacement, because manual slow-motion video review apps are easy to build and easy to shut down, and AI analysis is expensive to run.
The Quora thread "Are there any good free Apple Watch apps for tennis players?" (source) has a similar shape: people want serve-speed tracking and shot counts on their watch, and the answers point at TennisKeeper, Swing, and a few smaller options — most with a free tier and a paid upgrade path.
Both threads converge on the same uncomfortable truth: the word free in this category is doing a lot of work.
1. TennisKeeper (Apple Watch) — the genuine free Apple Watch option
What's free: match score tracking, shot counts (forehand/backhand/serve), swing speed estimates, calories, basic match history. What's paid: longer history, advanced analytics, Apple Watch + iPhone sync depth.
TennisKeeper has been on the Apple Watch since the early days. It's the app most rec players land on after they realize their Apple Workout summary says nothing tennis-specific. The free tier is genuinely useful for a player who wants to know "did I hit 200 forehands today, and how many were over 60 mph?"
What it doesn't do: any video analysis. There is no court keypoint detection, no shot type breakdown beyond watch-IMU heuristics, no PDF report. It's a wrist-based stat counter, and within that scope it's the best free option.
Best for: Apple Watch owners who want basic match stats without a subscription.
2. Swing Pro — the lighter Apple Watch option
What's free: basic shot counts, simple swing-speed estimates. What's paid: Pro history and analytics.
Swing Pro is the lighter alternative to TennisKeeper. Cleaner UI, less feature-dense, more "show me a number after the match" than "let me build a longitudinal record." If TennisKeeper feels like overkill, this is the simpler choice.
Best for: Apple Watch owners who want a single shot-count number after a session.
3. AceSense free tier — the genuine free video AI option
What's free: 3 full per-shot AI analyses per month. No credit card. No watermarks. Full PDF report. Court heatmap. Stroke quality scores. iOS, Android, and web. What's paid: unlimited analyses (Pro €19/mo), multi-coach team seats (Team €49/mo).
I'll be honest about what 3-per-month means in practice: it's enough for one match a week, with one off-week. For most NTRP 3.0–4.5 club players, that's actually the right pace — you don't need to analyze every hit. If you do, the upgrade path is transparent.
What you get for zero dollars on AceSense is the exact same pipeline the paid tier gets — same TrackNet ball detection, same court keypoints, same pose-based stroke quality scoring. We don't gate accuracy behind a paywall. The only thing the paid tier unlocks is volume and team features.
Best for: anyone — iOS, Android, or web — who wants to see what AI tennis analysis actually looks like for free, and who can live with one match per week.
4. SwingVision free tier — limited, watermarked, iOS-only
What's free: limited match recording, basic shot detection, exports with a watermark. What's paid: the actually-useful analytics — clean exports, real-time line calling, full stat depth.
SwingVision's free tier exists to get you to the upgrade prompt. That's not a criticism — it's the same playbook 90% of freemium apps run. But if you're searching specifically for "best free tennis stat tracker," SwingVision's free tier is functionally a 14-day demo, not a long-term tool. The Tennisnerd review makes this explicit when it walks through the tier-by-tier feature gating.
Best for: iOS users who want a hands-on demo before deciding whether to pay $14.99–$39.99 a month.
5. Apple Watch Workout app — free, but not tennis
What's free: calorie and duration tracking. That's it. What's paid: N/A.
Apple's built-in Workout app has a Tennis activity type. It tracks heart rate and calories. It does not track shots, swing speed, or match score. People keep landing on this option because it's free and pre-installed; nobody actually uses it for tennis stats.
Best for: people who only want to know how long they played and how many calories they burned.
How to choose
Two questions:
- Do you want video analysis or wrist-based stats? If video, AceSense free tier is the only genuine free option in the AI category. If wrist-only, TennisKeeper free tier wins.
- Are you on Apple Watch? If yes, your shortlist is TennisKeeper + Swing Pro. If no, AceSense is your only free option that does anything substantial.
If the answer to both is "I want video AI on Android," there is precisely one free option in 2026. That's not a marketing statement — it's a state-of-the-market observation. Pop into the Talk Tennis "Any Free Video Analysis Apps?" thread and read it for yourself.
Why "free forever, unlimited" doesn't exist in this category
Every AI tennis analysis hits a GPU bill. A 60-minute match takes 3–5 minutes of GPU time to fully analyze (TrackNet ball detection, court keypoints, pose estimation, shot classification, report generation). That's a real cost — somewhere between 8 and 30 cents per match depending on the cloud provider. Unlimited free in this category means one of three things:
- The product is a loss leader (you'll see the upgrade prompt soon).
- The "AI" is a heuristic that runs on-device and isn't actually doing pose-aware shot classification.
- The product is shutting down (this happened to Coach's Eye).
That's why AceSense's free tier is 3 per month rather than unlimited. The math has to work, or the product disappears.
What I'd recommend by persona
- Apple Watch owner who wants match stats: TennisKeeper free tier.
- iPhone player who wants a free demo of video AI: AceSense free tier (we run on iPhone). Try SwingVision's free tier too if you specifically want their line-call demo.
- Android player who wants any AI analysis: AceSense free tier — it's the only realistic option.
- Player without an Apple Watch and on a budget: AceSense free tier; one match per week is the right cadence anyway.
- Coach who wants to share with players: AceSense free tier as a demo, then Pro €19/mo when you outgrow it.
A note on the "stat tracker" framing
A stat tracker is a different product from a video analyzer. A tracker counts things — serves, faults, winners, errors. It doesn't tell you why your forehand is breaking down in the third set. For that you need video plus pose plus event detection plus a model that knows what a kinetic chain looks like.
If "stat tracker" is genuinely all you need — match score, shot count, swing speed — TennisKeeper is your answer and you don't need this whole post. If you want the why, you've moved into the video-AI category, and free options narrow fast.
FAQ
What is the best free tennis stat tracker? TennisKeeper free tier (Apple Watch only). For free video analysis, AceSense free tier (3 per month, full report).
Is there a free Apple Watch tennis app? TennisKeeper and Swing Pro both have free tiers. SwingVision requires a paid subscription for its watch features.
Is AceSense's free tier really free? Yes — 3 full analyses per month, no credit card, no watermark, full report. The upgrade is for volume and team features, not for accuracy.
What about Coach's Eye? Shut down by TechSmith. Players who used it for tennis slow-mo migrated to OnForm (paid) or AceSense (free tier covers what most rec players used Coach's Eye for).
Why isn't SwingVision genuinely free? SwingVision's free tier is a demo. The features rec players actually want — clean export, full line calling, real-time stats — are gated behind paid tiers (Tennisnerd review).
Try AceSense free — 3 full per-shot reports per month, no card, full report. Start free · How AceSense works · AceSense vs SwingVision · Apple Watch tennis apps explained