# Ground Zero vs In Action

The clearest difference is iOS requirement: Ground Zero at 13 against In Action's 15.1. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 9, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Ground Zero | In Action |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | Monthly |
| Monetization | — | Free |
| Size | 14 MB | 66 MB |
| Requires iOS | **13** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Konstantinos Anagnostakis](https://appshunter.io/developer/545699886) | [FLOW WAVE TECHNOLOGIES SINGLE MEMBER P.C](https://appshunter.io/developer/1784961970) |

## What reviewers say

### Ground Zero

[App page](https://appshunter.io/ios/app/ground-zero/id6445839166)

**Features:** macOS Compatibility

**In-app purchases:** none


### In Action

[App page](https://appshunter.io/ios/app/in-action/id6740631182)

Discover and book fitness classes and outdoor activities without contracts or commitments. Find gyms, trainers, and events like yoga, cycling, and hiking. Hosts can list their programs for free to attract new clients.

**Highlights:** Discover gyms and outdoor activities, Book activities without commitment, List programs for free (Hosts), Notifications for new activities, Easy search and booking, Variety of fitness options

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is Ground Zero free?

Ground Zero is free to download, with no in-app purchases.

### Is In Action free?

In Action is free to download, with no in-app purchases.

### Do Ground Zero or In Action have ads?

Neither Ground Zero nor In Action shows ads.

### Which is updated more often, Ground Zero or In Action?

Ground Zero ships an update monthly, and In Action monthly. Most recently, Ground Zero was updated on October 9, 2026 and In Action on October 2, 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.*