# 911PROTECTOR vs Health Diary

The clearest difference is in-app purchases: 911PROTECTOR at none against Health Diary's 3. 911PROTECTOR also leads on ads (none vs shown) and iOS requirement (15.6 vs 17.6). Health Diary's advantage is update cadence (fortnightly 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. 911PROTECTOR asks for nothing beyond the download.

911PROTECTOR ships an update every 2 months, Health Diary fortnightly. The most recent releases landed on November 6, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | 911PROTECTOR | Health Diary |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Fortnightly** |
| Size | 5 MB | 17 MB |
| Requires iOS | **15.6** | 17.6 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 12+ | 4+ |
| Developer | [LifeGuard Global Inc.](https://appshunter.io/developer/1060701210) | [鲁 黄](https://appshunter.io/developer/1696562503) |

## What reviewers say

### 911PROTECTOR

[App page](https://appshunter.io/ios/app/911protector/id1166955401)

**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, iPhone Duo 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 911PROTECTOR free?

911PROTECTOR 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 911PROTECTOR or Health Diary have ads?

Health Diary shows ads; 911PROTECTOR does not.

### Which is updated more often, 911PROTECTOR or Health Diary?

911PROTECTOR ships an update every 2 months, and Health Diary fortnightly. Most recently, 911PROTECTOR was updated on November 6, 2026 and Health Diary on November 9, 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.*