# Castra App vs HyperResponder

The clearest difference is update cadence: Castra App at weekly against HyperResponder's every 2 months. Castra App also leads on iOS requirement (16.6 vs 18.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Castra App sells 4 in-app purchases, starting at $4.99 per month and HyperResponder sells 4 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Castra App ships an update weekly, HyperResponder every 2 months. The most recent releases landed on October 22, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Castra App | HyperResponder |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 months |
| Size | 66 MB | 56 MB |
| Requires iOS | **16.6** | 18.6 |
| Devices | **iPhone, Apple Watch** | iPhone |
| Age rating | 17+ | 17+ |
| Developer | [CASTRA APP OOD](https://appshunter.io/developer/1761241022) | [VYKO TECHNOLOGIES LTD](https://appshunter.io/developer/1834368050) |

## What reviewers say

### Castra App

[App page](https://appshunter.io/ios/app/castra-app/id6612004431)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Athlete Subscription | $4.99 | per month |
| Coach Monthly Subscription | $29.99 | per month |
| Athlete Annual Subscription | $49.99 | per year |
| Coach Yearly Subscription | $269.99 | per year |


### HyperResponder

[App page](https://appshunter.io/ios/app/hyperresponder-workout-log/id6751271201)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HyperResponder Pro (Monthly) | $4.99 | per month |
| HyperResponder Pro (Yearly) | $49.99 | per year |
| HyperResponder Pro (Founders) | $99.99 | one-time |
| HyperResponder Pro (Lifetime) | $199.00 | one-time |


## Frequently asked questions

### Is Castra App free?

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

### Is HyperResponder free?

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

### Do Castra App or HyperResponder have ads?

Neither Castra App nor HyperResponder shows ads.

### Which is updated more often, Castra App or HyperResponder?

Castra App ships an update weekly, and HyperResponder every 2 months. Most recently, Castra App was updated on October 22, 2026 and HyperResponder on October 10, 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.*