Stark Bosu Ball Downloads & RevenueStark Bosu Ball · App Store
Stark Bosu Ball is #95 in Health & Fitness Paid in United Kingdom and charting in 5 of 30 countries we track.
Updated 9 Nov 2026 · rankings refresh through the day
DeveloperPostra AB
CategoryHealth & Fitness
Price4.99 USD
Released
Rating★ 4.4 (81)
Version4.2.0
Age rating4+
First seen by us
25 Sep 2026
25 Sep 2026Installs (est.)10k+ worldwide
✏️New screenshots📈Charting in a new country⭐Passed 100 ratings📈Charting in a new country📦Updated to version 4.2.0✏️Description updated📦Updated to version 4.1.0⭐Passed 100 ratings🆕First spotted by AppInsider🆕Released on the App Store
Full timeline · 35 events in the last 12 months
- ✏️Stark Bosu Ball: new screenshots6 screenshots (was 4) · GB
- 📈Stark Bosu Ball charting in a new countryVietnam
- 📈Stark Bosu Ball charting in a new countryFrance
- 📈Stark Bosu Ball entered the top 100Top Paid · Health & Fitness · CA
- 📈Stark Bosu Ball charting in a new countryCanada
- 📈Stark Bosu Ball entered the top 10Top Paid · Health & Fitness · SE
- 📈Stark Bosu Ball charting in a new countrySweden
- 📈Stark Bosu Ball charting in a new countryBrazil
- 📦Stark Bosu Ball updated to version 4.2.0• “Iniciar sesión con Apple” mejorado y más seguro.
• Apps de equipamiento: una sección de inicio de sesión más clara que muestra las ventajas de la app principal Stark Fitness.
• Corrección de errores. - 📈Stark Bosu Ball entered the top 100Top Paid · Health & Fitness · DE
- ✏️Stark Bosu Ball: description updated· IT
- ✏️Stark Bosu Ball: description updated· RU
- ✏️Stark Bosu Ball: description updated· TW
- ✏️Stark Bosu Ball: description updated· KR
- ✏️Stark Bosu Ball added 8 languages+ DE + ES + FR + IT + KO + PT + SV + ZH
- ✏️Stark Bosu Ball: description updated· ES
- 📦Stark Bosu Ball updated to version 4.1.0Vuelve Apple Health
• Los entrenamientos terminados se guardan de nuevo en Apple Health, junto con las calorías quemadas.
• ¿Has iniciado sesión? Puedes desactivarlo en Perfil → General → Guardar en Apple Health.
• Corrección de errores y mejoras.… more - ✏️Stark Bosu Ball: new iPad screenshots· US
- ✏️Stark Bosu Ball: new screenshots6 screenshots (was 4) · US
- ✏️Stark Bosu Ball: new iPad screenshots· IT, TR
- ✏️Stark Bosu Ball: new screenshots6 screenshots (was 4) · IT, TR
- ✏️Stark Bosu Ball: new iPad screenshots· 5 countries
- ✏️Stark Bosu Ball: new screenshots6 screenshots (was 4) · 5 countries
- ✏️Stark Bosu Ball dropped 6 languages− DE − ES − FR − IT − PT − SV
- ✏️Stark Bosu Ball: app got bigger19 MB → 60 MB (+223%)
- ✏️Stark Bosu Ball: needs a newer iOSiOS 12.0 → iOS 15.1
- ✏️Stark Bosu Ball: new iPad screenshots· TH
- ✏️Stark Bosu Ball: new screenshots6 screenshots (was 4) · TH
- 📦Stark Bosu Ball: first update in 1692 days
- 📦Stark Bosu Ball updated to version 4.0.2- New design with light and dark themes.
- Improved workout builder and program browsing.
- Optional sign-in to save your programs to your Stark Fitness account.
- Sync workout history and view your weekly activity.
- Updated account settings and bug fixes.… more - 🆕Stark Bosu Ball first spotted by AppInsider#84 in Top Paid · Health & Fitness · Indonesia
- 🆕Stark Bosu Ball released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
4.4 ★
81 ratings
Measured
Best rank now
#95
Health & Fitness PaidMeasured
Stark Bosu Ball on the App Store
App details
App ID
649753542
Publisher
Postra AB
On the store since
May 2013
13 years on the store
Minimum OS
iOS 15.1+
iPhone 6s and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
9
EN FR DE IT KO PT ZH ES SV
Size
60 MB
Stark Bosu Ball downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Apple publishes no download counts. App Store downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. Confidence is the chance the real number is within half to double ours.
Where Stark Bosu Ball's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| United Kingdom | Health & FitnessPaid | #95 |
 South Korea | Health & FitnessPaid | #164 |
 Spain | Health & FitnessPaid | #144 |
 Taiwan | Health & FitnessPaid | #160 |
 Turkey | Health & FitnessPaid | #110 |
Apps near Stark Bosu Ball on the chart
Health & Fitness Paid, around #95.
Ratings
App Store, worldwide.
Rating
4.4 ★
81 ratings
Measured
Ratings
81
Measured
Review momentum
ⓘ How we measure thisNew ratings a week
under 1
4-week average
Lifetime rating
4.5★
recent stars not readable yet: new ratings are a tiny share of the total
Review momentum
20/100
faster than 0% of Health & Fitness apps
Review momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
What users say about Stark Bosu Ball
From the 30 most recent App Store reviews in the US.
Mixed but leaning positive (73% of recent reviews give 4–5 stars). People like it for being easy to use, and its features and content. The main complaints are about crashes and bugs.
What people like
- Ease of use: “It's fine for easy workout”
- Features & content: “This app has many features and love the options it provides”
- Price & subscription: “The app is sort of pricey, but given the photos and videos, it appears to be worth the price”
- Fun: “I need to play with it more to get more out of it but like this for instructing others and for personal challenges,”
Common complaints
- Crashes & bugs: “App doesn't work with iOS 7”
About Stark Bosu Ball
Optimise your results with Stark Bosu Ball!
- Be inspired by 21 exercises presented in sharp HD video.
- Create your own personal workout.
- Get a full body workout with exercises in all ranges of difficulty
- While working out, follow the step by step workout-feature which take you through the workout using timers and your chosen specifics.
- The timers support different workout types including Tabata, HIIT and Circuit training.
- Challenge yourself, get rewards and keep track of your score.
- Find exercises targeting specific muscle groups.
Integration with Apple Health: Save burned calories and performed workouts.
Exercises are performed by the professional instructor Jenny Ahlin.
- Be inspired by 21 exercises presented in sharp HD video.
- Create your own personal workout.
- Get a full body workout with exercises in all ranges of difficulty
- While working out, follow the step by step workout-feature which take you through the workout using timers and your chosen specifics.
- The timers support different workout types including Tabata, HIIT and Circuit training.
- Challenge yourself, get rewards and keep track of your score.
- Find exercises targeting specific muscle groups.
Integration with Apple Health: Save burned calories and performed workouts.
Exercises are performed by the professional instructor Jenny Ahlin.
Latest updates
4.2.0
• “Iniciar sesión con Apple” mejorado y más seguro.
• Apps de equipamiento: una sección de inicio de sesión más clara que muestra las ventajas de la app principal Stark Fitness.
• Corrección de errores.
4.1.0
Vuelve Apple Health
• Los entrenamientos terminados se guardan de nuevo en Apple Health, junto con las calorías quemadas.
• ¿Has iniciado sesión? Puedes desactivarlo en Perfil → General → Guardar en Apple Health.
• Corrección de errores y mejoras.
4.0.2
- New design with light and dark themes.
- Improved workout builder and program browsing.
- Optional sign-in to save your programs to your Stark Fitness account.
- Sync workout history and view your weekly activity.
- Updated account settings and bug fixes.
Store changes
What Stark Bosu Ball changed on its store page: name, icon, screenshots, price, size, languages, requirements.
New screenshots
6 screenshots (was 4)
Description updated 
Description updated 
