Comparison

Stark Bag vs studio Cocoon~コクーン~

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

Head to head
About

Stark Bag

This app offers a virtual training experience with HD exercise videos and customizable workout plans. It supports various training styles like Tabata and HIIT, tracks progress, and integrates with Apple Health to log burned calories and completed workouts.

Highlights
  • HD exercise videos
  • Customizable workout plans
  • Tabata, HIIT, and Circuit training timers
  • Progress tracking and scoring
  • Targeted muscle group exercises
  • Apple Health integration
Features
Read full description

Optimize your results with Virtual Trainer Bag! - Be inspired by 27 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. The Bag, is a crescent-shaped exercise equipment used in strength training, plyometric weight training, cardiovascular training, and general physical fitness. Exercises are performed by the professional instructor, Martin Söderblom.

About

studio Cocoon~コクーン~

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Cocoonの公式アプリをリリースしました! このアプリでは、Cocoonの最新情報の受け取りや便利な機能を使う事ができます。 【アプリで出来ること】 本アプリを利用して以下のことが行えます。 1.最新情報をチェック!  Cocoonのサービス内容が確認できます。  また、お店からメッセージが届くので、いつでも最新の情報がご確認いただけます。 2.マイページで情報を確認!  Cocoonのご利用状況が確認できます。 3.友達に紹介!  CocoonのアプリをSNSを通じてお友達に紹介する事ができます。 4.他にも便利な機能満載!

Screenshots

Stark Bag4 screens
studio Cocoon~コクーン~3 screens

Verdict

The call

The clearest difference is price: studio Cocoon~コクーン~ at Free against Stark Bag's $4.99. studio Cocoon~コクーン~ also leads on iOS requirement (12.0 vs 15.1). Stark Bag's advantage is update cadence (every 17 months vs every 43 months). On 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

studio Cocoon~コクーン~ is free to download; Stark Bag costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Stark Bag ships an update every 17 months, studio Cocoon~コクーン~ every 43 months. The most recent releases landed on November 2, 2026 and October 26, 2026 respectively.

Scorecard3 real differences · 7 level
Stark Bag versus studio Cocoon~コクーン~: the parameters behind the verdict, then further details
ParameterStark Bagstudio Cocoon~コクーン~
Price$4.99Free — better
Rating4.8 (50 ratings) — better—
Positive reviews80.0% of reviews—
Number of ratings50 — better—
Update frequencyEvery 17 months — betterEvery 43 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.112.0 — better
Further details — not scored
Size57 MB15 MB
Age rating4+4+
DeveloperPostra ABMICHIE UEHARA

In-app purchases

None

Stark Bag

No in-app purchases

None

studio Cocoon~コクーン~

No in-app purchases

Questions

Is Stark Bag free?
Stark Bag costs $4.99, with no in-app purchases.
Is studio Cocoon~コクーン~ free?
studio Cocoon~コクーン~ is free to download, with no in-app purchases.
Do Stark Bag or studio Cocoon~コクーン~ have ads?
Neither Stark Bag nor studio Cocoon~コクーン~ shows ads.
Which is updated more often, Stark Bag or studio Cocoon~コクーン~?
Stark Bag ships an update every 17 months, and studio Cocoon~コクーン~ every 43 months. Most recently, Stark Bag was updated on November 2, 2026 and studio Cocoon~コクーン~ on October 26, 2026.

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