# Grid ToDo vs AIメールくん

The clearest difference is price: AIメールくん at Free against Grid ToDo's $19.99. AIメールくん also leads on update cadence (every 9 days vs every 2 months). Grid ToDo's advantage is device support (3 vs 1). On ads, in-app purchases and iOS requirement there is nothing between them.

AIメールくん is free to download; Grid ToDo costs $19.99 up front. Grid ToDo sells 1 one-off in-app purchase and AIメールくん sells 1 in-app purchase, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Grid ToDo ships an update every 2 months, AIメールくん every 9 days. The most recent releases landed on September 23, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Grid ToDo | AIメールくん |
| --- | --- | --- |
| Price | $19.99 | **Free** |
| Positive reviews | 82.9% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 9 days** |
| Monetization | Freemium | — |
| Size | 16 MB | 4 MB |
| Requires iOS | 17.6 | **16.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [NAOKI YUSA](https://appshunter.io/developer/932463952) | [AppEngine](https://appshunter.io/developer/1684103190) |

## What reviewers say

### Grid ToDo

[App page](https://appshunter.io/ios/app/grid-todo/id1298952890)

This app helps you create goal achievement sheets in a grid format. It offers features to improve focus, organize thoughts, and track progress with custom notifications and advanced management tools. A lite version is available to test basic functionality.

**Highlights:** Grid format for goal achievement sheets, Customizable push notifications, Container and full-cell search functions, Password lock and iCloud backup, Multiple icons and theme colors, Stamp function for goal achievement

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 画像表示機能強化 | $1.99 | one-time |


### AIメールくん

[App page](https://appshunter.io/ios/app/ai/id6470747443)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $6.99 | per 7 days |


## Frequently asked questions

### Is Grid ToDo free?

Grid ToDo costs $19.99, and also offers in-app purchases.

### Is AIメールくん free?

AIメールくん is free to download, with in-app purchases available.

### Do Grid ToDo or AIメールくん have ads?

Neither Grid ToDo nor AIメールくん shows ads.

### Which is updated more often, Grid ToDo or AIメールくん?

Grid ToDo ships an update every 2 months, and AIメールくん every 9 days. Most recently, Grid ToDo was updated on September 23, 2026 and AIメールくん on September 19, 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.*