# GTZ Training vs CONTROL SIX

The clearest difference is update cadence: GTZ Training at every 6 weeks against CONTROL SIX's every 7 months. GTZ Training also leads on device support (4 vs 2). On price, rating, ratings volume and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for GTZ Training against 5.0 for CONTROL SIX. Both are backed by a comparable volume of ratings — 3 and 3 respectively.

GTZ Training ships an update every 6 weeks, CONTROL SIX every 7 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | GTZ Training | CONTROL SIX |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/gtz-training/id6754829197/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/control-six/id6758416597/reviews) |
| Number of ratings | 3 | 3 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 7 months |
| Monetization | Free | Free |
| Size | 170 MB | 121 MB |
| Requires iOS | **15.5** | 16.4 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Greater Than Zero Collective, LLC](https://appshunter.io/developer/1850358628) | [Sutra Fitness, Inc.](https://appshunter.io/developer/914371834) |

## What reviewers say

### GTZ Training

[App page](https://appshunter.io/ios/app/gtz-training/id6754829197)

This app offers personalized fitness, nutrition, and lifestyle coaching. It provides custom training programs, nutrition guidance, and progress tracking. Connect with your coach directly for support and accountability.

**Highlights:** Custom training programs, Personalized nutrition guidance, Weekly check-ins and progress tracking, Step, sleep, and workout tracking, Direct messaging with coach, Habit trackers and reminders

**Features:** Apple Wallet, Apple Watch app

**In-app purchases:** none


### CONTROL SIX

[App page](https://appshunter.io/ios/app/control-six/id6758416597)

This app streamlines your Pilates practice by allowing you to book classes, manage your membership, and stay updated on studio announcements. It offers a clean, intuitive interface to organize your schedule and access your Pilates routine with ease.

**Highlights:** Book and manage Pilates classes, Purchase memberships and class packages, View schedules and class details, Join waitlists and manage cancellations, Receive studio announcements and reminders

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

**In-app purchases:** none


## Frequently asked questions

### Is GTZ Training free?

GTZ Training is free to download, with no in-app purchases.

### Is CONTROL SIX free?

CONTROL SIX is free to download, with no in-app purchases.

### Which has better reviews, GTZ Training or CONTROL SIX?

GTZ Training and CONTROL SIX are both rated 5.0 out of 5 on the App Store, from 3 and 3 ratings respectively.

### Do GTZ Training or CONTROL SIX have ads?

Neither GTZ Training nor CONTROL SIX shows ads.

### Which is updated more often, GTZ Training or CONTROL SIX?

GTZ Training ships an update every 6 weeks, and CONTROL SIX every 7 months. Most recently, GTZ Training was updated on October 24, 2026 and CONTROL SIX on October 25, 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.*