# The Challenge App vs design SIE

The Challenge App and design SIE are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. The Challenge App sells 4 in-app purchases, starting at $17.99 per month and design SIE sells 2 in-app purchases, starting at $67.90 per month. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on October 14, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | The Challenge App | design SIE |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 58.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Monetization | — | Subscription |
| Size | 171 MB | 90 MB |
| Requires iOS | **14.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Christian Curtius](https://appshunter.io/developer/1687476069) | [Christina Sulger](https://appshunter.io/developer/1764067637) |

## What reviewers say

### The Challenge App

[App page](https://appshunter.io/ios/app/the-challenge-app/id6449030326)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mitgliedschaft für die App. | $17.99 | per month |
| Jährlich Mitgliedschaft für die App | $99.99 | per year |
| Shape Together - Men - Gym | $179.00 | one-time |
| Shape Together - Challenge | $179.00 | one-time |


### design SIE

[App page](https://appshunter.io/ios/app/design-sie/id6651856618)

This app offers daily exclusive content, meditations, rituals, and tools to build self-worth and confidence. It connects users with their menstrual cycle and promotes mental well-being for a more empowered life.

**Highlights:** Exclusive daily brain food, Meditations for inner child healing, Rituals for self-confidence, Menstrual cycle connection tools, Mental well-being promotion, Techniques for nervous system balance, Fokussionen for self-alignment

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monatliches Abonnement | $67.90 | per month |
| Jährliches Abonnement | $434.99 | per year |


## Frequently asked questions

### Is The Challenge App free?

The Challenge App is free to download, with in-app purchases available.

### Is design SIE free?

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

### Do The Challenge App or design SIE have ads?

Neither The Challenge App nor design SIE shows ads.

### Which is updated more often, The Challenge App or design SIE?

The Challenge App ships an update every 2 weeks, and design SIE every 2 weeks. Most recently, The Challenge App was updated on October 14, 2026 and design SIE on October 8, 2026.

---

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