Comparison

String Master vs TechTennis

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

String Master

Optimize your tennis game by precisely tracking string tension and durability. Record every restring, analyze string performance, and discover the best setups for your playstyle. Never guess about your strings again.

Highlights
  • Smart Restring logging
  • Custom string input
  • Smart String Finder
  • Restring reminders
  • Detailed logs and history
  • Hybrid setup support
Features
Read full description

Stop guessing, start tracking. String Master is the ultimate performance-tracking companion for tennis players who demand the best from their equipment. Whether you are a casual player or a competitive athlete, your string setup dictates your game. String Master helps you record, analyze, and discover the perfect string configurations tailored to your unique playing style. [Major New Updates & Premium Features] • Smart Recommendation Wizard & Normalized Engine Finding your next string is now effortless. Our 3-step recommendation wizard uses lab-tested data (stiffness, spin potential, tension loss, energy return) and scales them using min-max normalization to prescribe the perfect setup matching your game. • Dynamic Activity Calendar & Backdating Visualize your active string health on a color-coded calendar. Log past sessions, backfill older stringing jobs, and edit durations with instant, automatic health percentage recalculations. • Playability & Environmental Logging Go beyond time tracking. Log how your strings feel (Soft, Crisp, Stiff, or Dead Poly), track weather conditions (Sunny, Humid, Cloudy), and record temperatures to understand how environment impacts your tension. • Community Insights & Lifespan Rankings Access real-time community statistics and trends. View the top average string lifespan rankings based on thousands of hours of real player data. (Access is granted to active members with a minimum of 4 hours of logged play over the past 14 days.) • Advanced Racket Specifications Track customized parameters for every racket in your bag. Log weight (g), stiffness (ra), swing weight (kg/cm²), balance point (mm), serial numbers, and custom tuning notes (lead tape, grip details). • Smart Restring & Terminology Polish Log a new job in 3 seconds! Tap "Restring" to clone your previous setup (racket, string, tension). Terminology has been audited and standardized to "History" across 10 languages. • Social Authentication & Data Migration Log in instantly with Google or Apple Sign-In. Seamlessly migrate your entire guest mode racket and stringing history to your permanent account in one click. [Core Features] • Restring Reminders: Set custom notifications (90 days or health below 20%) to prevent arm strain and maintain peak playability. • Hybrid Setup Support: Independently log mains and crosses (different brands, gauges, and tensions). • 10-Language Expert Guides: Tap the info (i) icons to read explanations of string materials and metrics, fully localized in 10 languages (EN, KO, ES, JA, ZH, ZH_Hant, DE, FR, IT, PT).

About

TechTennis

Features
Read full description

Bem-vindo ao TechTennis, o maior e mais completo hub de tênis do Brasil! Nascemos com o propósito de unificar e revolucionar todo o ecossistema do tênis nacional. Integramos em uma única plataforma de alta tecnologia os jogadores, os professores (coaches), os encordoadores profissionais (pro stringers), etc. Descubra como a TechTennis transforma a experiência de cada pilar desse esporte: ● PARA OS JOGADORES (A SUA JORNADA NO TÊNIS): Ache o Professor Ideal: Encontre treinadores de alta performance na sua região através do nosso radar de busca por geolocalização e filtre por objetivos (correção de golpes, treino tático ou cardio tênis). Agendamento Sem Atrito: Marque aulas avulsas ou gerencie seus horários fixos de forma 100% digital. Histórico Técnico da sua Raquete: Monitore a saúde do seu equipamento. Acompanhe a perda de tensão das suas cordas, consulte seu histórico de libras e receba notificações para a próxima troca. Feedback de Performance: Avalie a experiência de cada encordoamento e treino para manter a consistência do seu jogo. ● PARA OS PROFESSORES (POTENCIALIZE SUA CARREIRA): Agenda Aberta para o Mercado: Fique visível para milhares de novos alunos que buscam aulas na sua região e aumente sua ocupação diária. Gestão Completa de Alunos: Controle presenças, faltas, cancelamentos e remarcações por chuva de forma automatizada e profissional. Painel Financeiro e Comissões: Monitore seu faturamento mensal, horas em quadra e gerencie créditos de comissões por captação de raquetes em tempo real. POR QUE O TECHTENNIS É O HUB DEFINITIVO DO BRASIL? Conectividade total entre quem joga, quem ensina e quem prepara o equipamento. Tecnologia escalável e interface intuitiva desenhada por e para tenistas. O ponto de encontro oficial do tênis brasileiro. Junte-se à comunidade que está desenvolvendo o ecossistema do tênis no país. Baixe a TechTennis agora e faça parte do maior hub do esporte no Brasil!

Screenshots

String Master4 screens
TechTennis4 screens

Verdict

The call

The clearest difference is update cadence: TechTennis at every 2 days against String Master's weekly. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

String Master ships an update weekly, TechTennis every 2 days. The most recent releases landed on October 17, 2026 and October 21, 2026 respectively.

Scorecard1 real difference · 8 level
String Master versus TechTennis: the parameters behind the verdict, then further details
ParameterString MasterTechTennis
PriceFreeFree
Rating5.0 (7 ratings) — better—
Number of ratings7 — better—
Update frequencyWeeklyEvery 2 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.615.1 — better
Further details — not scored
Size71 MB46 MB
Age rating4+4+
DeveloperORYONG KIMPaulo Souto

In-app purchases

None

String Master

No in-app purchases

None

TechTennis

No in-app purchases

Questions

Is String Master free?
String Master is free to download, with no in-app purchases.
Is TechTennis free?
TechTennis is free to download, with no in-app purchases.
Do String Master or TechTennis have ads?
Neither String Master nor TechTennis shows ads.
Which is updated more often, String Master or TechTennis?
String Master ships an update weekly, and TechTennis every 2 days. Most recently, String Master was updated on October 17, 2026 and TechTennis on October 21, 2026.

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