# Six Pack Chick vs CardioEngine

The clearest difference is in-app purchases: Six Pack Chick at none against CardioEngine's 1. Six Pack Chick also leads on device support (4 vs 2) and iOS requirement (15.1 vs 26.0). CardioEngine's advantage is update cadence (every 9 days vs monthly). On price and ads there is nothing between them.

Both are free to download. CardioEngine sells 1 one-off in-app purchase. Six Pack Chick asks for nothing beyond the download.

Six Pack Chick ships an update monthly, CardioEngine every 9 days. The most recent releases landed on October 7, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Six Pack Chick | CardioEngine |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (108 ratings)](https://appshunter.io/ios/app/six-pack-chick/id1603322104/reviews)** | — |
| Number of ratings | **108** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 9 days** |
| Monetization | Free | — |
| Size | 167 MB | 9 MB |
| Requires iOS | **15.1** | 26.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Six Pack Chick Inc.](https://appshunter.io/developer/1603322436) | [Feeling Mindful Labs LLC](https://appshunter.io/developer/1716689922) |

## What reviewers say

### Six Pack Chick

[App page](https://appshunter.io/ios/app/six-pack-chick/id1603322104)

Achieve your fitness goals with personalized workout and meal tracking. Get guidance from fitness experts, monitor progress, and connect with coaches. Stay motivated with reminders and body measurement tracking.

**Highlights:** Workout tracking, Meal management, Progress monitoring, Personalized coaching, Real-time coach messaging, Body measurement tracking, Wearable device integration

**Features:** Apple Wallet

**In-app purchases:** none


### CardioEngine

[App page](https://appshunter.io/ios/app/cardioengine-hr-zone-training/id6761030036)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CardioEngine Full Access | $29.99 | one-time |


## Frequently asked questions

### Is Six Pack Chick free?

Six Pack Chick is free to download, with no in-app purchases.

### Is CardioEngine free?

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

### Do Six Pack Chick or CardioEngine have ads?

Neither Six Pack Chick nor CardioEngine shows ads.

### Which is updated more often, Six Pack Chick or CardioEngine?

Six Pack Chick ships an update monthly, and CardioEngine every 9 days. Most recently, Six Pack Chick was updated on October 7, 2026 and CardioEngine on October 19, 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.*