# 3sec Diary vs The Simple Scheduler

The clearest difference is review sentiment: 3sec Diary at 60% against The Simple Scheduler's 0%. 3sec Diary also leads on iOS requirement (12.0 vs 14.0). The Simple Scheduler's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. 3sec Diary sells 1 one-off in-app purchase. The Simple Scheduler asks for nothing beyond the download.

3sec Diary ships an update every 26 months, The Simple Scheduler every 6 months. The most recent releases landed on July 4, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | 3sec Diary | The Simple Scheduler |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **60.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 26 months | **Every 6 months** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 12 MB | 27 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [KENJI KANEMOTO](https://appshunter.io/developer/402720982) | [Simple Scheduler, LLC](https://appshunter.io/developer/1717606115) |

## What reviewers say

### 3sec Diary

[App page](https://appshunter.io/ios/app/3sec-diary/id985967203)

Quickly log daily activities and feelings in just three seconds. Your entries are securely stored in your iPhone Calendar, ensuring data safety and easy access. This tool helps you preserve memories and makes research and sharing effortless.

**Highlights:** 3-second daily logging, Calendar integration, Secure data storage, Easy research and sharing, Memory preservation

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Eliminate Ads | $0.99 | one-time |


### The Simple Scheduler

[App page](https://appshunter.io/ios/app/the-simple-scheduler/id6449791038)

This app simplifies business management through intuitive online scheduling. It offers drag-and-drop features for employee schedules, customer invoices, and client appointments, with automated custom reports to streamline operations.

**Highlights:** Drag-and-drop scheduling, Employee scheduling, Customer invoices, Client appointment management, Custom reports, Automated scheduling tools

**In-app purchases:** none


## Frequently asked questions

### Is 3sec Diary free?

3sec Diary is free to download, with in-app purchases available.

### Is The Simple Scheduler free?

The Simple Scheduler is free to download, with no in-app purchases.

### Do 3sec Diary or The Simple Scheduler have ads?

3sec Diary shows ads; The Simple Scheduler does not.

### Which is updated more often, 3sec Diary or The Simple Scheduler?

3sec Diary ships an update every 26 months, and The Simple Scheduler every 6 months. Most recently, 3sec Diary was updated on July 4, 2026 and The Simple Scheduler on September 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.*