RacquetTune - String Tension

RacquetTune - String Tension

By Sten Kaiser

RacquetTune is a sports utility app designed for tennis players to monitor equipment performance through acoustic analysis. It provides tools to calculate string tension, estimate swingweight, and simulate racquet stiffness configurations to help users optimize their gear.

Overview · Full Intel report in progress

The App DNA

What makes this app unique?

For Competitive tennis players and enthusiasts looking to track string tension degradation and customize racquet specifications.

What does it look like?

Key features

Tension Measurementstandard

Uses sound frequency analysis from tapping strings to calculate stringbed tension and stiffness.

Swingweight Calculatorstandard

An interactive tool designed to assist users in customizing their racquet to match specific stroke patterns.

Stiffness Calculatorstandard

Allows users to simulate and compare different racquet configurations.

How much does it cost?

paid

Velocity

Intense developmentShow more...

5 versions in history. Development pace: intense.

See all version history

Who built it?

Sten Kaiser

10 apps tracked · Sports

SprintTimer ProSprintTimer ProSprintTimer - Photo FinishSprintTimer - Photo FinishLapTracker - Auto TimerLapTracker - Auto TimerSpeedClock - Video RadarSpeedClock - Video RadarFitnessMeter - Test & MeasureFitnessMeter - Test & MeasureSeeLevel - visual clinometerSeeLevel - visual clinometerSprintStart - Reaction TimeSprintStart - Reaction TimeJumpPowerJumpPowerSwingTool - Swing WeightSwingTool - Swing Weight
Explore the full publisher profile

User Sentiment

What do users think recently?

How are ratings & reviews evolving?

App Store
4.64 · 463

Not enough recent reviews to extract reliable themes yet.

Read the full review analysis

Competition

Competitive landscape for RacquetTune - String Tension

How's the Sports market?

The rivals identified

stringster for Tennis 2.0

By Sportsnext Application GmbH

Both apps utilize acoustic frequency analysis to measure tennis racquet string tension, targeting the same competitive player demographic.

  • stringster includes a digital stringing report feature for professional stringers to share with customers.
  • RacquetTune requires a paid purchase, whereas stringster offers its functionality as a free utility.
RacquetTune - String Tension vs stringster for Tennis 2.0
Show 2 more

Unlock the head-to-head verdict: where this rival wins, and where it loses.

Access the full report for free

The Analyst's Read

Key takeaways for RacquetTune - String Tension

Where is it heading?

Bottom line

While the app offers unique diagnostic tools for racquet maintenance, recent user feedback highlights significant concerns regarding technical reliability and measurement consistency.

Report last updated

Disclosure: Independent intel to help mobile builders succeed.

AI-powered analysis with automated quality gates, built from publicly available sources. Marlvel.ai is not affiliated with, endorsed by, or sponsored by RacquetTune - String Tension, its developer, the app publisher, Apple, or Google Play. All trademarks, logos, and screenshots referenced remain the property of their respective owners.

Cite this report

Marlvel.ai. “RacquetTune - String Tension Intelligence Report.” Updated Apr 18, 2026. https://marlvel.ai/apps/racquettune

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