Zepp Tennis Is Dead. Here's the Only Sensor That Still Works. (2026 Update)
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Performance Lab · May 2026
Zepp Tennis Is Dead.
Here's the Only Sensor That Still Works.
Five products. Five dead apps. One answer.
Between 2020 and 2021, every major plug-in tennis sensor on the market was discontinued. Zepp Tennis. Sony Smart Tennis Sensor. Babolat Play. Babolat POP. HEAD Tennis Sensor. Five products, five dead apps — and thousands of players left searching for what comes next.
This article is a definitive answer to that search. Here is what happened, what is no longer available, and what actually still works in 2026.
What Happened to All the Tennis Sensors?
The collapse was not gradual. It happened in a single 18-month window.
Zepp Tennis (2013–2020)
Zepp Labs discontinued tennis support when its app infrastructure was quietly taken offline. The hardware still exists on secondhand markets. The login server does not. As of 2023, users confirmed: new accounts cannot be created, and existing authentication fails. The sensor is functionally inoperable.
Sony Smart Tennis Sensor (2014–2021)
Sony discontinued the Smart Tennis Sensor service on September 30, 2021. The product pages on Sony's Australia and New Zealand sites now carry a single word: Discontinued. Users who paid up to $199 USD for the sensor have hardware that no longer connects to any active backend.
Babolat Play / Pure Drive Play (2013–2021)
Babolat announced the end of the Play product line on March 1, 2021. App support continued until December 31, 2021, then shut down. The rackets — which embedded the sensor in the handle — are now sold on eBay for parts. The entire value proposition died with the app.
Babolat POP (2016–2021)
The POP wristband ran on PIQ Sport Intelligence infrastructure. PIQ shut down operations on March 23, 2021. The app is no longer available for download.
HEAD Tennis Sensor (2015–2021)
Built on the same backend as Zepp Tennis. Google Play removed the app on September 13, 2021. The last update was July 30, 2019. The sensor is a paperweight.
What Does "App Discontinued" Actually Mean?
A plug-in tennis sensor is not a standalone device. It is a data-collection module that requires three things to function: hardware, Bluetooth connectivity, and an active app with a working authentication server.
When a company shuts down the server infrastructure, the hardware becomes inoperable. It does not matter that the physical sensor is intact. Without a functioning app that can authenticate sessions and process data, there is no measurement — and no training feedback.
When the app dies, the sensor dies.
Every sensor listed above is dead by that definition.
What Is Actually Still Available in 2026?
The market has narrowed significantly. After the 2020–2021 wave of discontinuations, two plug-in sensors remained:
1. The STA 4.0 Smart Tennis Swing Analyzer
The STA 4.0 is a Bluetooth 4.0 motion sensor that attaches to the butt cap of any racket grip. It connects to a companion app (iOS 9.0+ / Android 4.3+) that measures serve speed, ball spin rate (RPM), swing velocity, sweet spot impact distribution, and 3D motion trace. The app syncs video footage to swing data automatically, enabling frame-by-frame form review.
Unlike the discontinued sensors, the STA 4.0 has an active supply chain, a maintained app, and ships globally from Hong Kong with a 6-month warranty. It is currently available at promotional pricing.
→ Shop the STA 4.0 Swing Analyzer2. Qlipp
Qlipp is a string-bed sensor — it mounts inside the racket head rather than on the handle. As of May 2026, the product is listed as Currently Unavailable on its primary retail channel. Stock and continuity status are unconfirmed. Verify availability before purchase.
STA 4.0 vs. Discontinued Sensors: What the Data Captures
| Sensor | Status | Serve Speed | Spin Rate | Sweet Spot | 3D Trajectory | Video Sync |
|---|---|---|---|---|---|---|
| STA 4.0 (Auratide) | ✅ Active | ✅ | ✅ | ✅ | ✅ | ✅ |
| Zepp Tennis 2 | ❌ Dead | ✅ | ✅ | ✅ | ❌ | ❌ |
| Sony Smart Tennis Sensor | ❌ Dead | ✅ | ✅ | ✅ | ❌ | ❌ |
| HEAD Tennis Sensor | ❌ Dead | ✅ | ✅ | ❌ | ❌ | ❌ |
| Babolat Play | ❌ Dead | ✅ | ✅ | ❌ | ❌ | ❌ |
| Babolat POP | ❌ Dead | ✅ | ❌ | ❌ | ❌ | ❌ |
What the STA 4.0 Actually Measures
The five data dimensions the STA 4.0 tracks are the same categories monitored by ATP-level coaching analytics systems.
01 — Serve Speed
Measures racket-ball contact velocity in km/h. The difference between what you feel and what you measure is typically 15–25%. Most players who self-report a "fast" serve discover their measured speed is 20% lower than perceived.
02 — Spin Rate
Measured in RPM via the Magnus effect. A 2,200-RPM topspin shot dips 14% faster than a flat ball. Most club players generate 800–1,100 RPM and believe they are producing heavy topspin. The measurement gap between feel and reality is the difference between training spin and training the illusion of spin.
03 — Sweet Spot Distribution
Renders as a heat map across 50+ sessions. Professional players show a tight central cluster. Club players typically distribute impact across 40% of the string bed. You cannot correct what you cannot see.
04 — Swing Velocity
Measures peak racket head speed at contact. Not how hard you felt you swung. How fast the head moved.
05 — 3D Motion Trace
Replays your swing in 360-degree animation, identifying mechanical deviations in the backswing, loading phase, and follow-through that are invisible in real time and inaudible to a coach standing courtside.
Does the STA 4.0 Work With Any Racket?
Yes. The STA 4.0 attaches to the butt cap of any standard racket grip using a silicone mount (included). It weighs 170 grams total with packaging; the sensor itself is ultra-light and does not affect the racket's balance. Connectivity is Bluetooth 4.0 (High Speed). Compatible with iOS 9.0 and above and Android 4.3 and above.
Unlike the Babolat Play line — which embedded the sensor permanently in the racket handle, making the hardware inseparable from the dead product — the STA 4.0 is a portable device. One sensor. Any racket.
FAQ
Is Zepp Tennis still available or fixable?
No. Zepp's server infrastructure for tennis was taken offline in 2020. The hardware may still exist on eBay, but without a functioning authentication server, the sensor cannot establish a session or record data. No firmware update or workaround restores login capability. The product is functionally discontinued.
Can I use my Sony Smart Tennis Sensor in 2026?
Sony terminated the Smart Tennis Sensor service on September 30, 2021. The companion app requires an active Sony server connection to operate. Without it, the sensor cannot log in, sync, or record. Sony's own product pages in Australia and New Zealand list it as discontinued. The hardware is inoperable.
Is Qlipp still available as an alternative?
As of May 2026, Qlipp is listed as currently unavailable on Amazon, which is the primary sales channel the brand redirects to. Availability should be confirmed directly before purchase. The STA 4.0 has a confirmed active supply chain and ships globally.
What makes the STA 4.0 different from the sensors it replaced?
The key differences are supply chain continuity, data depth, and video synchronisation. The STA 4.0 measures five data dimensions — serve speed, spin rate, swing velocity, sweet spot distribution, and 3D trajectory — and syncs automatically to video footage. None of the discontinued competitors offered both 3D trajectory and video sync simultaneously. The STA 4.0 also installs on any racket; no proprietary hardware required.
Where can I buy the STA 4.0?
The STA 4.0 is available at auratidecollective.com, currently at promotional pricing. Ships to the US, EU, UK, Australia, and 15+ countries with free priority shipping and a 6-month warranty.
The Data Gap Is Still There
Four hundred thousand users were stranded between 2020 and 2021 when their sensors went dead. The question they were all asking is the same one you are probably asking now:
What actually still works?
One sensor. Five data dimensions. Any racket. Active app. Active supply chain.
Refuse to settle for 'feel.' Train with data.
→ See the STA 4.0 Swing AnalyzerRelated Guides — Auratide Performance Lab
