# Thorlabs Toolkit vs Challenger Circle

The clearest difference is update cadence: Thorlabs Toolkit at every 4 months against Challenger Circle's every 10 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Thorlabs Toolkit ships an update every 4 months, Challenger Circle every 10 months. The most recent releases landed on October 10, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Thorlabs Toolkit | Challenger Circle |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/challenger-circle/id6748082564/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 10 months |
| Monetization | — | Free |
| Size | 30 MB | 17 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Thorlabs, Inc.](https://appshunter.io/developer/1725147057) | [Go SimplyFit, LLC](https://appshunter.io/developer/1734288852) |

## What reviewers say

### Thorlabs Toolkit

[App page](https://appshunter.io/ios/app/thorlabs-toolkit/id6475776756)

**Features:** macOS Compatibility

**In-app purchases:** none


### Challenger Circle

[App page](https://appshunter.io/ios/app/challenger-circle/id6748082564)

This faith-based wellness app empowers Christian women to overcome diet culture and achieve holistic transformation. It offers workouts, courses on mindset and nutrition, faith-based coaching, and a supportive community.

**Highlights:** Live & on-demand workouts, Mindset & nutrition courses, Faith-fueled coaching, Community chat, Exclusive events, Meal planning & recipes, Weekly podcast episodes

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Thorlabs Toolkit free?

Thorlabs Toolkit is free to download, with no in-app purchases.

### Is Challenger Circle free?

Challenger Circle is free to download, with no in-app purchases.

### Do Thorlabs Toolkit or Challenger Circle have ads?

Neither Thorlabs Toolkit nor Challenger Circle shows ads.

### Which is updated more often, Thorlabs Toolkit or Challenger Circle?

Thorlabs Toolkit ships an update every 4 months, and Challenger Circle every 10 months. Most recently, Thorlabs Toolkit was updated on October 10, 2026 and Challenger Circle on October 13, 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.*