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Stark Kettlebell

Stark Kettlebell

By Postra AB

Stark Kettlebell is a fitness application that provides a library of 51 HD instructional videos for kettlebell training. It enables users to build custom workouts with integrated timers for Tabata, HIIT, and circuit training, while syncing performance data with Apple Health.

Overview · Full Intel report in progress

The App DNA

What makes this app unique?

For Fitness enthusiasts looking to improve strength, endurance, and form through guided kettlebell exercises.

What does it look like?

Key features

HD Video Librarystandard

Access to 51 professional instructional videos demonstrating proper kettlebell technique.

Custom Workout Builderstandard

Create personalized routines by selecting specific exercises and targeting muscle groups.

Integrated Timersstandard

Step-by-step workout guidance supporting Tabata, HIIT, and circuit training formats.

Apple Health Integrationstandard

Automatically logs performed workouts and burned calories to the user's health profile.

How much does it cost?

freemium

Velocity

Dormant developmentShow more...

5 versions in history. Development pace: zombie.

See all version history

Who built it?

Postra AB

13+ apps tracked · Health & Fitness

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Explore the full publisher profile

User Sentiment

What do users think recently?

How are ratings & reviews evolving?

Google Play
4.74 · 20k
App Store
4.70 · 528

Not enough recent reviews to extract reliable themes yet.

Read the full review analysis

Competition

Competitive landscape for Stark Kettlebell

How's the Health & Fitness market?

The rivals identified

Fitify: Home Workout, AI Coach

By Fitify

Fitify competes by offering a library of 900 exercises that includes kettlebell training alongside nine other equipment types, directly challenging the specialized focus of Stark Kettlebell.

  • Fitify supports ten distinct fitness tools, whereas Stark Kettlebell focuses exclusively on kettlebell training.
  • Fitify provides a library of 900 exercises, dwarfing the 51 instructional videos found in Stark Kettlebell.
Stark Kettlebell vs Fitify: Home Workout, AI Coach
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 Stark Kettlebell

Where is it heading?

Bottom line

While the app offers high-quality instructional content, users report significant concerns regarding technical stability, lack of recent updates, and limited flexibility in workout customization.

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 Stark Kettlebell, 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. “Stark Kettlebell Intelligence Report.” Updated Apr 14, 2026. https://marlvel.ai/apps/se-virtualtrainer-vt-kettlebell-en

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