# Smart Pill Box vs Secret Diary

The clearest difference is in-app purchases: Smart Pill Box at none against Secret Diary's 1. Smart Pill Box also leads on iOS requirement (12.0 vs 15). Secret Diary's advantage is update cadence (every 3 months vs every 7 months). On price, ads and device support there is nothing between them.

Both are free to download. Secret Diary sells 1 one-off in-app purchase. Smart Pill Box asks for nothing beyond the download.

Smart Pill Box ships an update every 7 months, Secret Diary every 3 months. The most recent releases landed on October 8, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Smart Pill Box | Secret Diary |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/secret-diary-password-notes/id6445909382/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 70.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 months** |
| Monetization | — | Free with in-app purchases |
| Size | 40 MB | 66 MB |
| Requires iOS | **12.0** | 15 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [ReFleX Wireless Inc.](https://appshunter.io/developer/666581212) | [伟 葛](https://appshunter.io/developer/1028908732) |

## What reviewers say

### Smart Pill Box

[App page](https://appshunter.io/ios/app/smart-pill-box/id1559481819)

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

**In-app purchases:** none


### Secret Diary

[App page](https://appshunter.io/ios/app/secret-diary-password-notes/id6445909382)

Securely record your daily life and protect your privacy with this easy-to-use digital journal. Customize entries with beautiful fonts and quickly find past notes using content search. It offers password protection for exclusive access.

**Highlights:** Password protection, Secure diary entries, Customizable fonts, Content search, User-friendly interface, Privacy protection

**Features:** Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Premium | $2.99 | one-time |


## Frequently asked questions

### Is Smart Pill Box free?

Smart Pill Box is free to download, with no in-app purchases.

### Is Secret Diary free?

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

### Do Smart Pill Box or Secret Diary have ads?

Neither Smart Pill Box nor Secret Diary shows ads.

### Which is updated more often, Smart Pill Box or Secret Diary?

Smart Pill Box ships an update every 7 months, and Secret Diary every 3 months. Most recently, Smart Pill Box was updated on October 8, 2026 and Secret Diary on October 7, 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.*