# Stark Bag vs studio Cocoon～コクーン～

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.

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.

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.

## The numbers

| Metric | Stark Bag | studio Cocoon～コクーン～ |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[4.8 (50 ratings)](https://appshunter.io/ios/app/stark-bag/id887426211/reviews)** | — |
| Number of ratings | **50** | — |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 17 months** | Every 43 months |
| Monetization | Paid | — |
| Size | 57 MB | 15 MB |
| Requires iOS | 15.1 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Postra AB](https://appshunter.io/developer/1807937957) | [MICHIE UEHARA](https://appshunter.io/developer/1460785285) |

## What reviewers say

### Stark Bag

[App page](https://appshunter.io/ios/app/stark-bag/id887426211)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### studio Cocoon～コクーン～

[App page](https://appshunter.io/ios/app/studio-cocoon/id1460785676)

**In-app purchases:** none


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*