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+12

Postra AB

For fitness enthusiasts and travelers seeking guided, form-focused workouts using specific gym tools or bodyweight exercises.

15apps4.3(24.1K)Health & Fitness

Snapshot

Who is Postra AB?

Providing structured, equipment-specific video coaching to help fitness enthusiasts master form and build strength anywhere.

Target audience

Fitness enthusiastsTravelers seeking guidedForm-focused workouts using specific gym tools or bodyweight exercises

Top rival

Technogym SpA

Other rivals

Portfolio

Free 4
15
apps
Health & Fitness15

Last updated

Stark Kettlebell

v1.8.0

2.8y ago

Intense

Publisher DNA

What defines Postra AB?

Publisher DNA

Primary focus

Equipment-specific fitness coaching apps

Scale

studio

Target audience

Fitness enthusiasts and travelers seeking guided, form-focused workouts using specific gym tools or bodyweight exercises.

Origin

A Swedish fitness firm focused on postural training and physical therapy, led by Mattias Sunneborn.

Signature Patterns

  • •Modular app architecture focusing on one specific piece of equipment per title
  • •Heavy reliance on high-definition video demonstrations led by professional instructors
  • •Consistent integration of specialized interval timers for Tabata and HIIT across the 'Stark' series
  • •Hybrid monetization strategy utilizing paid-upfront, free, and freemium models across different titles
Intense

Portfolio momentum

The publisher has executed 20 updates across its active portfolio in the last 6 months, with the most recent major release occurring only 3 days ago.

Last release 3d agoActive apps 5Abandoned 10

Company profile

medium confidence
Headquarters
Sweden

Portfolio

What does Postra AB ship?

Distributed across 12 markets, strongest in Europe.

Based on 2 of 15 apps with localized market data, more coverage rolling in as scans complete · last scanned .

Americas (3)

  • Brazil2 / 2
  • Mexico2 / 2
  • United States2 / 2

Europe (7)

  • France2 / 2
  • Germany2 / 2
  • Italy2 / 2
  • Netherlands2 / 2
  • Portugal2 / 2
›+2 more europe markets
  • Spain2 / 2
  • Sweden2 / 2

Asia-Pacific (2)

  • Japan2 / 2
  • South Korea2 / 2

Core markets (2/2 apps)

BrazilFranceGermanyItalyJapanMexicoNetherlandsPortugalSouth KoreaSpainSwedenUnited States

Rivals

Who does Postra AB compete with?

The rivals identified

Nemeses(4)

WELLTECH APPS

known forHome Fitness Coach: FitCoach

3 apps4.6Health & Fitness

Both applications target home fitness users, but Stark Bosu Ball focuses on specialized equipment training while FitCoach targets general weight loss and toning through personalized routines.

Leap Fitness

known forHome Workout - No Equipment

3 apps4.9Health & Fitness

This app serves the same fitness-tracking audience but targets users without gym equipment, whereas Stark Dumbbell focuses on dumbbell-specific routines.

Perigee

known forSeven: 7 Minute Workout

1 app4.8Health & Fitness

Offers interval training that complements the Bosu ball's circuit-style workouts.

Fitify

known forFitify: Home Workout, AI Coach

1 app4.9Health & Fitness

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

Contenders(25)

Technogym SpA

known forTechnogym - fitness & workout

1 app4.4Health & Fitness

Links fitness activity to hardware, serving users who use Bosu balls in connected gym environments.

Axiom Mobile

known forKettlebell Home Workout

2 apps4.8Health & Fitness

Both applications compete for the same home-based fitness audience by providing structured, equipment-specific training routines that integrate with Apple Health.

Bunnit_official

known forBurnFit: Gym & Workout Planner

1 app4.3Health & Fitness

This app provides a long-term logging tool for gym-goers, contrasting with Stark Dumbbell's focus on guided video sessions.

EZ Health

known forHome Workout App: Fitness

2 apps4.9Health & Fitness

This app targets the same home-fitness demographic as Stark Dumbbell but focuses on bodyweight exercises rather than dumbbell-based training.

Fast Builder

known forHIIT • Workouts & Timer

2 apps4.8Health & Fitness

Facilitates interval sessions that can incorporate Bosu ball movements.

Symmetry Dev

known forSymmetry: AI Gym Workout Log

1 app4.8Health & Fitness

This app offers an AI-centric approach to gym logging that contrasts with Stark Dumbbell's static video library.

Virtuagym

known forVirtuagym: Fitness & Workouts

1 app4.6Health & Fitness

This app offers a more comprehensive fitness-management suite than Stark Dumbbell, including nutrition tracking.

Arbor Apps

known forMy Kettlebell Workout

1 app4.6Health & Fitness

Both applications target fitness enthusiasts seeking specialized, equipment-specific training routines, competing for the same user time within the Health and Fitness category.

Caliber Fitness

known forCaliber: Strength Training

1 app4.8Health & Fitness

Both applications target strength training enthusiasts, with Stark Bag focusing on specialized crescent-shaped bag equipment while Caliber provides data-driven coaching and habit formation.

Hybrid Calisthenics

known forHybrid Calisthenics - Fitness

1 app4.8Health & Fitness

This app offers bodyweight-focused calisthenics training, serving as an alternative to Stark Dumbbell's weight-based routines.

Prometheus Interactive

known forHIIT & Tabata: Interval Timer

1 app4.7Health & Fitness

Both apps target interval-based training, forcing users to choose between Stark Bag's specialized equipment-focused video content and the rival's general-purpose timer utility.

TechPionners Team

known forMuscle Monster Workout Planner

1 app4.6Health & Fitness

This app targets the same fitness-progression audience as Stark Dumbbell but utilizes an AI-guided challenge format.

Throwdown Labs

known forKeelo - Strength HIIT Workouts

1 app4.8Health & Fitness

Both apps target strength and HIIT training, creating direct competition for users seeking structured fitness programs.

Adam Gooch

known forAFFit Kettlebell Workouts

1 app4.8Health & Fitness

Both applications target the same kettlebell training audience with free, video-guided workout models, creating direct competition for user retention.

Daily Workout Apps

known forDaily Cardio Workout

2 apps4.8Health & Fitness

Both apps target home-based fitness enthusiasts with paid models, competing for the same time-constrained user segment looking for guided exercise routines.

Enerjoy Pte

known forJustFit - Lazy Workout

1 app4.8Health & Fitness

Both apps target home-based fitness users by providing guided exercise routines, directly competing for the same user segment seeking equipment-flexible training.

Fitify Workouts s.r.o.

known forFitify: Fitness, Home Workout

1 app4.7Health & Fitness

Fitify targets the same home-workout audience as Quickstart workout generator by offering equipment-flexible routines and personalized training plans. The apps compete directly on the utility of on-demand exercise generation for users training at home.

Garage Strength

known forPeak Strength

2 apps4.8Health & Fitness

Both applications target strength training enthusiasts with free-to-access workout systems, creating direct competition for users seeking structured fitness guidance.

Mateus Abras

known forSmartGym: Gym & Home Workouts

1 app4.7Health & Fitness

Both applications target fitness enthusiasts seeking structured workout routines and performance tracking, creating direct competition for users who prioritize Apple platform integration.

MONTIBUS

known forHome Fitness for Weight Loss

1 app4.6Health & Fitness

Both applications target the home fitness market and utilize Apple Health integration to track user progress. They compete for the same user time in the home workout category.

Muscle & Motion

known forMuscle & Motion: Strength

1 app4.9Health & Fitness

Both applications target strength training enthusiasts, with Muscle and Motion providing biomechanical education while Stark Bag focuses on specific equipment-based routines.

MyStrengthBook

known forTraining App (MyStrengthBook)

1 appHealth & Fitness

Both applications target strength training enthusiasts, though Stark Bag focuses on specific crescent-shaped bag equipment while MyStrengthBook centers on coach-led programming and barbell tracking.

palmatech

known forKBMH - Kettlebell Workouts

1 app4.7Health & Fitness

Both applications target home-based kettlebell training with freemium models, directly competing for users seeking guided strength and conditioning routines.

powerpunch

known forStability Ball Workouts

1 app0.0Health & Fitness

Both applications target the core stability training market, with Stark Bosu Ball focusing on Bosu equipment and the rival targeting Swiss ball exercises.

Samantha Roobol

known forStability Ball Workout Guide

1 app2.0Health & Fitness

Both applications target users seeking core stability training using inflatable exercise equipment, competing for the same audience interested in balance and strength routines.

Same space(55)

Anuj Seth

known forTabata Timer and HIIT Timer

1 app4.8Health & Fitness

Serves as a dedicated timing tool for Bosu ball circuit sessions.

Crunch Gym

known forCrunch Fitness

1 app4.8Health & Fitness

This app serves as a membership-management tool for gym members, whereas Stark Dumbbell is a standalone training app.

Hevy Gym Workout Tracker

known forHevy - Gym Log Workout Tracker

1 app4.9Health & Fitness

This app provides a weightlifting-focused alternative to Stark Dumbbell, emphasizing community and social features for tracking progress.

Hevy Studios S.L.

known forHevy - Workout Tracker Gym Log

1 app4.9Health & Fitness

Serves as a general gym log for users who outgrow specialized Bosu ball training.

Ladder Technologies

known forLADDER Strength Training Plans

1 app4.9Health & Fitness

Offers coach-led programming for users who prefer human guidance over the video-based Bosu ball instructions.

Lyfta Gym Workout Tracker

known forLyfta: Gym Log Workout Tracker

1 app4.7Health & Fitness

This app functions as a gym-log alternative to Stark Dumbbell, offering deeper performance analytics for strength training.

NEO PIXEL LABS PTE

known forInterval Timer - Tabata Timer

1 app4.5Health & Fitness

Provides the timing utility required for Bosu ball circuits without the video content.

SmartWOD

known forSmartWOD Timer - WOD Clock

1 app4.9Health & Fitness

Offers functional fitness timing for users performing Bosu ball circuits.

Uniqo Lab.

known forTimer Plus - Workouts Timer

1 app4.7Health & Fitness

Provides interval timing for Bosu ball circuit workouts.

Virtuagym Professional

known forFitness Park App

1 app4.7Health & Fitness

This app serves as a facility-specific companion for gym members, whereas Stark Dumbbell is a standalone workout tool.

BG.Studio

known forGym Workout Tracker & Fitness

1 app4.3Health & Fitness

This app offers a similar gym-tracking experience to Stark Dumbbell but includes a larger exercise database.

BLUEBASE

known forChair Workout at Home

2 apps4.5Health & Fitness

This app targets a similar low-impact fitness audience by providing guided exercises that require minimal equipment.

Core AI

known forChillFit: Home Workout Planner

1 app4.9Health & Fitness

Provides low-pressure home fitness for users who find Bosu ball training too intense.

DevMaker Mobile Apps

known forDecathlon Coach - fitness, run

1 app4.2Health & Fitness

This app offers a similar guided fitness experience for users seeking multi-sport training programs and performance tracking.

dreamspark

known forInterval Timer

1 app4.9Health & Fitness

Interval Timer provides a simple, ad-supported alternative for users who need a glanceable, color-coded timer for HIIT.

Fitbod

known forFitbod: Workout & Gym Planner

1 app4.4Health & Fitness

This app provides an AI-driven alternative to Stark Dumbbell's manual workout builder for gym and home training.

FITNESS ONLINE MChJ

known forFitness App: Gym Workout Plan

1 app4.7Health & Fitness

Offers general workout planning for users who want to supplement Bosu ball training.

Float Tech

known forInterval Timer □ HIIT Timer

2 apps4.9Health & Fitness

Interval Timer provides a streamlined, background-compatible tool for managing the timed intervals required for Stark Bag's HIIT and circuit workouts.

Leap Health

known for30 Day Fitness at Home

2 apps4.9Health & Fitness

Provides structured challenges for users who want to build a routine around Bosu ball training.

Nike

known forNike Training Club

2 apps4.3Health & Fitness

Nike Training Club offers free, expert-led video programming that serves as a broader fitness resource for users who also utilize Stark Bag's specialized equipment.

SimpleInnovation

known forInterval Timer & Tabata Timer

1 app4.8Health & Fitness

This app provides the interval-timer functionality found in Stark Dumbbell but as a standalone, cross-activity tool.

Strong Fitness PTE

known forStrong Workout Tracker Gym Log

1 app4.9Health & Fitness

Strong provides a minimalist, distraction-free logging interface that complements the structured training sessions users perform with Stark Bag.

StrongLifts

known forStronglifts 5x5 Workout Plan

1 app4.9Health & Fitness

Stronglifts 5x5 provides a proven, barbell-focused program that offers a structured alternative to the crescent-bag training found in Stark Bag.

The Gym

known forThe Gym Group

1 app4.3Health & Fitness

This app functions as a gym-access utility for members, contrasting with Stark Dumbbell's focus on individual workout guidance.

짐워크

known forGymwork: Workout Tracker Log

1 app0.0Health & Fitness

This app provides a professional-athlete-led routine library, contrasting with Stark Dumbbell's general video-guided exercises.

Alpha Progression

known forAlpha Progression Gym Tracker

1 app4.8Health & Fitness

This app targets the same gym-going audience by providing a science-based tracker that adapts to user progress.

AnlinYu

known forHerBody - Home Workout

1 app0.0Health & Fitness

Provides a streamlined home fitness experience for women with a focus on quick access to routines.

Beachbody

known forBODi Home Fitness & Workouts

1 app4.9Health & Fitness

BODi Fitness offers a vast library of instructor-led content that provides a comprehensive home-fitness experience for users seeking variety beyond Stark Bag.

Fitbod

known forFitbod: Gym & Fitness Planner

1 app4.8Health & Fitness

Fitbod uses AI to generate strength training plans that adapt to available equipment, offering a scalable alternative to Stark Bag's specific bag-based routines.

Fitness Camp

known forFitness Camp: Sport, Nutrition

2 apps4.7Health & Fitness

Combines fitness and nutrition for women, providing a holistic approach to well-being.

Fitness International

known forLA Fitness Mobile

2 apps3.1Health & Fitness

Focuses on club access management, providing a digital membership card for existing gym members.

FITNESS22

known forGymverse: AI Gym Workout Plans

1 app4.8Health & Fitness

Offers AI-adaptive plans for users seeking progression tracking beyond static Bosu ball videos.

FizzUp

known forFizzUp - Fitness Workouts

1 app4.4Health & Fitness

This app focuses on short, equipment-free home workouts, serving as a complement to Stark Dumbbell's gym-centric routines.

Freeletics

known forFreeletics: Fitness Workouts

1 app4.1Health & Fitness

This app targets the same home-fitness audience by providing a digital personal trainer for HIIT and strength workouts.

GymBros

known forLiftoff - Ranked Gym Workouts

2 apps4.8Health & Fitness

This app competes for the same gym-going audience by offering a gamified, social-ranking system for workout performance.

HIIT Workout Soft

known forHIIT Workout for Men Lite

1 app4.5Health & Fitness

Focuses on high-intensity interval training for users seeking rapid body toning without equipment.

iFit

known foriFIT Personal Trainer

1 app4.7Health & Fitness

Offers a premium, cinematic coaching experience for users who prefer guided, high-production-value sessions.

Ikki Yoshimiya

known forGym get-fit workout Schedule

1 app4.7Health & Fitness

Offers advanced logging features like RM calculation for users who need detailed performance metrics.

Intervals

known forIntervals Pro: HIIT Timer

1 app4.8Health & Fitness

Intervals Pro offers deep wearable integration for users who need more than Stark Kettlebell's basic Apple Health sync.

Kidslox

known forWorkout Locker: Better Habits

1 app3.9Health & Fitness

Combines fitness with digital wellbeing by using exercise as a gatekeeper for phone usage.

Lasta

known forLasta: Your Wellness Coach

1 app4.6Health & Fitness

This app provides a wellness-coaching alternative to Stark Dumbbell's focused dumbbell-training routines.

Leal Apps LTDA

known forGym WP - Workout Tracker & Log

1 app4.6Health & Fitness

This app provides a similar gym-tracking utility to Stark Dumbbell but emphasizes personalized workout plan generation.

Lindberg Development AS

known forLyfta: Gym Workout Tracker Log

1 app4.8Health & Fitness

Lyfta provides a manual-first gym tracker that allows users to log diverse training sessions, including those using specialized equipment like Stark Bag.

Luni

known forFitness Coach - Workout Plan

1 app4.5Health & Fitness

Provides goal-oriented training for users who want to track activity alongside other fitness goals.

Mosaic S.r.l.

known for30 Day Fitness - Home Workout

1 app4.3Health & Fitness

Offers gamified challenges for users who want to stay consistent with Bosu ball training.

Nexercise

known forSworkit Fitness & Wellness App

1 app4.7Health & Fitness

Offers a broad library of exercises that can include Bosu ball training.

Oleksandr Serhiienko

known forTabata Timer: Interval Timer.

1 app4.9Health & Fitness

This timer provides a simple, high-intensity interval tool for users who need a partner for home or gym training.

Peloton Interactive

known forPeloton: Fitness & Workouts

1 app4.9Health & Fitness

Peloton serves as a high-end, instructor-led complement for users seeking professional guidance that Stark Kettlebell's static video library lacks.

Planet Fitness

known forPlanet Fitness

1 app4.9Health & Fitness

Acts as a physical-digital bridge for gym members, providing facility-specific utility that the workout generator lacks.

Runloop

known forSeconds Interval Timer

1 app4.7Health & Fitness

Seconds offers advanced interval customization, including music matching, for users who find Stark Kettlebell's timers too basic.

SIMPLETOUCH

known forTabata Pro HIIT Interval Timer

1 app4.9Health & Fitness

Tabata Pro is a specialized interval tool for users who need to maximize performance in short, high-intensity sessions.

Strava

known forStrava: Run, Bike, Walk

1 app4.6Health & Fitness

Strava serves as a social-first activity log that complements Stark Bag's physical training by providing a platform for outdoor performance tracking.

Sunny Studio

known forInterval Timer ++

1 app4.9Health & Fitness

Interval Timer ++ provides a visual, calendar-based tracking tool for users who want to log their interval sessions.

TechPioneers

known forMuscle Monster Workout Planner

1 app4.5Health & Fitness

Muscle Monster provides an AI-driven alternative for users who want automated programming rather than Stark Kettlebell's manual builder.

Zwift

known forZwift: Indoor Cycling Fitness

1 app4.0Health & Fitness

Zwift provides a virtual environment for indoor cycling that offers a high-intensity alternative to the crescent-bag training found in Stark Bag.

New entrants(2)

Growly

known forWorkout at Home App: Fitness

1 app4.6Health & Fitness

This app offers home-based fitness challenges, serving as a complement to Stark Dumbbell's dumbbell-focused routines.

T-SHAPED APPS

known forGymtone - Gym Workout Planner

1 app4.8Health & Fitness

This app provides a similar strength-training focus to Stark Dumbbell but includes recovery-specific features.

The Analyst's Read

The bottom line on Postra AB

Bottom line

Postra AB is a specialized fitness studio that has successfully captured the niche equipment market through a fragmented but high-quality portfolio. Their recent aggressive update cadence indicates a commitment to maintaining their lead in the specialized coaching category against broader platform competitors.

Frequently asked questions

How many apps does Postra AB publish?
Postra AB has 15 apps tracked by Marlvel, primarily in the Health & Fitness category.
Where is Postra AB based?
Postra AB is based in Sweden.
What kind of apps does Postra AB make?
Postra AB's portfolio is concentrated in Health & Fitness, with an average rating of 4.3/5 across rated apps.
What is Postra AB's top app?
By review volume across the portfolio, Stark Kettlebell is Postra AB's best-known app tracked by Marlvel.
In how many countries are Postra AB's apps available?
Marlvel has tracked Postra AB's apps across 12 countries.

What fed this analysis

Apps analyzed:
15
With full intel:
0
With overview:
15
Website scraped:
yes
Social presence:
yes

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 Postra AB, 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. “Postra AB intelligence.” Updated 2026-04-23. https://marlvel.ai/publishers/postra-ab

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Data licensed under CC-BY-NC 4.0