# Mono vs Simple ToDo Diary

The clearest difference is ads: Simple ToDo Diary at none against Mono's shown. Simple ToDo Diary also leads on update cadence (daily vs weekly). Mono's advantage is iOS requirement (15.6 vs 18.6). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Mono sells 1 one-off in-app purchase and Simple ToDo Diary sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Mono ships an update weekly, Simple ToDo Diary daily. The most recent releases landed on November 7, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Mono | Simple ToDo Diary |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/mono-item-tracker/id6447232127/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 83.3% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Weekly | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 26 MB | 4 MB |
| Requires iOS | **15.6** | 18.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [BizNode Inc.](https://appshunter.io/developer/1533736018) | [Kazuya Hashimoto](https://appshunter.io/developer/1857972259) |

## What reviewers say

### Mono

[App page](https://appshunter.io/ios/app/mono-item-tracker/id6447232127)

Organize your belongings with this powerful yet simple inventory management app. Easily catalog items using photos and custom fields, and quickly find what you need with smart search. Ideal for personal collections, office assets, or small business stock.

**Highlights:** Photo-based logging, Customizable fields, Smart search functionality, Track quantity and location, Versatile for personal or business use

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $9.99 | one-time |


### Simple ToDo Diary

[App page](https://appshunter.io/ios/app/simple-todo-diary/id6756016949)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告を非表示にする | $1.99 | one-time |


## Frequently asked questions

### Is Mono free?

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

### Is Simple ToDo Diary free?

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

### Do Mono or Simple ToDo Diary have ads?

Mono shows ads; Simple ToDo Diary does not.

### Which is updated more often, Mono or Simple ToDo Diary?

Mono ships an update weekly, and Simple ToDo Diary daily. Most recently, Mono was updated on November 7, 2026 and Simple ToDo 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.*