# Nitro Athletic Complex vs Health Diary

The clearest difference is in-app purchases: Nitro Athletic Complex at none against Health Diary's 3. Nitro Athletic Complex also leads on ads (none vs shown) and iOS requirement (14.0 vs 17.6). Health Diary's advantage is update cadence (every 2 weeks vs every 2 months). On price and device support there is nothing between them.

Both are free to download. Health Diary sells 3 in-app purchases, starting at $3.99 per month. Nitro Athletic Complex asks for nothing beyond the download.

Nitro Athletic Complex ships an update every 2 months, Health Diary every 2 weeks. The most recent releases landed on September 12, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | Nitro Athletic Complex | Health Diary |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (26 ratings)](https://appshunter.io/ios/app/nitro-athletic-complex/id6744453677/reviews)** | — |
| Number of ratings | **26** | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 56 MB | 17 MB |
| Requires iOS | **14.0** | 17.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [TeamUp Sports](https://appshunter.io/developer/1449504626) | [鲁 黄](https://appshunter.io/developer/1696562503) |

## What reviewers say

### Nitro Athletic Complex

[App page](https://appshunter.io/ios/app/nitro-athletic-complex/id6744453677)

This app guides your health and fitness journey by allowing you to book classes online. It integrates with Apple Health to track daily steps, distance, and calories burned, and can import data from wearable devices.

**Highlights:** Online class booking, Apple Health integration, Step tracking, Distance tracking, Calorie tracking, Wearable device data import

**Features:** macOS Compatibility

**In-app purchases:** none


### Health Diary

[App page](https://appshunter.io/ios/app/health-diary-body-notes/id6755714195)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Health Diary Pro Monthly | $3.99 | per month |
| Health Diary Pro Yearly | $19.99 | per year |
| Health Diary Pro Lifetime | $59.99 | one-time |


## Frequently asked questions

### Is Nitro Athletic Complex free?

Nitro Athletic Complex is free to download, with no in-app purchases.

### Is Health Diary free?

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

### Do Nitro Athletic Complex or Health Diary have ads?

Health Diary shows ads; Nitro Athletic Complex does not.

### Which is updated more often, Nitro Athletic Complex or Health Diary?

Nitro Athletic Complex ships an update every 2 months, and Health Diary every 2 weeks. Most recently, Nitro Athletic Complex was updated on September 12, 2026 and Health Diary on September 26, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*