# Stark Bag vs StretchPrep

The clearest difference is price: StretchPrep at Free against Stark Bag's $4.99. StretchPrep also leads on update cadence (every 4 days vs every 17 months). Stark Bag's advantage is in-app purchases (none vs 2) and device support (3 vs 1). On ads there is nothing between them.

StretchPrep is free to download; Stark Bag costs $4.99 up front. StretchPrep sells 2 in-app purchases, starting at $5.99 per month. Stark Bag asks for nothing beyond the download.

Stark Bag ships an update every 17 months, StretchPrep every 4 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | Stark Bag | StretchPrep |
| --- | --- | --- |
| 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** | Yes |
| Ads | No | No |
| Update frequency | Every 17 months | **Every 4 days** |
| Monetization | Paid | — |
| Size | 57 MB | 33 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Postra AB](https://appshunter.io/developer/1807937957) | [Antoine Conan](https://appshunter.io/developer/1870239015) |

## 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


### StretchPrep

[App page](https://appshunter.io/ios/app/stretchprep-routine-builder/id6790889582)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $5.99 | per month |
| Pro Yearly | $29.99 | per year |


## Frequently asked questions

### Is Stark Bag free?

Stark Bag costs $4.99, with no in-app purchases.

### Is StretchPrep free?

StretchPrep is free to download, with in-app purchases available.

### Do Stark Bag or StretchPrep have ads?

Neither Stark Bag nor StretchPrep shows ads.

### Which is updated more often, Stark Bag or StretchPrep?

Stark Bag ships an update every 17 months, and StretchPrep every 4 days. Most recently, Stark Bag was updated on October 24, 2026 and StretchPrep on October 24, 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.*