# Circadian Rhythm vs Training Loader

The clearest difference is price: Circadian Rhythm at Free against Training Loader's $0.99. Circadian Rhythm also leads on device support (3 vs 1) and iOS requirement (17.0 vs 26.0). Training Loader's advantage is in-app purchases (none vs 3). On update cadence and ads there is nothing between them.

Circadian Rhythm is free to download; Training Loader costs $0.99 up front. Circadian Rhythm sells 3 in-app purchases, starting at $4.99 per month. Training Loader asks for nothing beyond the download.

Circadian Rhythm ships an update monthly, Training Loader every 2 months. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Circadian Rhythm | Training Loader |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.6 (11 ratings)](https://appshunter.io/ios/app/circadian-rhythm-body-clock/id6737418117/reviews)** | — |
| Number of ratings | **11** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 18 MB | 3 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Joaquin Marticorena](https://appshunter.io/developer/1774135480) | [One Reaction LLC](https://appshunter.io/developer/1864426860) |

## What reviewers say

### Circadian Rhythm

[App page](https://appshunter.io/ios/app/circadian-rhythm-body-clock/id6737418117)

Align your daily routines with your body's natural biological clock. Gain personalized insights to improve sleep, boost energy, and enhance focus by understanding your circadian rhythm. Optimize your day with alerts for hormone peaks and sunlight guidance.

**Highlights:** Circadian Rhythm Tracking, Sleep Insights & Trends, Hormone Peak Information, Daily Rhythm Alerts, Mood Tracking, Sunlight Guidance, Personalized Recommendations

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Circadian PRO | $4.99 | per month |
| Circadian PRO | $29.99 | per year |
| Lifetime Premium | $4.99 | one-time |


### Training Loader

[App page](https://appshunter.io/ios/app/training-loader/id6759540555)

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

**In-app purchases:** none


## Frequently asked questions

### Is Circadian Rhythm free?

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

### Is Training Loader free?

Training Loader costs $0.99, with no in-app purchases.

### Do Circadian Rhythm or Training Loader have ads?

Neither Circadian Rhythm nor Training Loader shows ads.

### Which is updated more often, Circadian Rhythm or Training Loader?

Circadian Rhythm ships an update monthly, and Training Loader every 2 months. Most recently, Circadian Rhythm was updated on October 30, 2026 and Training Loader 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.*