# ERAI! vs AI目標達成マンダラチャート

The clearest difference is in-app purchases: ERAI! at none against AI目標達成マンダラチャート's 2. AI目標達成マンダラチャート's advantage is iOS requirement (12.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. AI目標達成マンダラチャート sells 2 in-app purchases, starting at $1.99 per month. ERAI! asks for nothing beyond the download.

ERAI! ships an update weekly, AI目標達成マンダラチャート every 9 days. The most recent releases landed on October 16, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | ERAI! | AI目標達成マンダラチャート |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Weekly** | Every 9 days |
| Size | 18 MB | 84 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kosuke Shimada](https://appshunter.io/developer/1529796493) | [Ito Takaya](https://appshunter.io/developer/1682542285) |

## What reviewers say

### ERAI!

[App page](https://appshunter.io/ios/app/erai/id1529796491)

**Features:** macOS Compatibility

**In-app purchases:** none


### AI目標達成マンダラチャート

[App page](https://appshunter.io/ios/app/ai/id6744336094)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad-Free Plan (1mo·Auto-Renew) | $1.99 | per month |
| Ad-Free Plan (3mo·Auto-Renew) | $2.99 | per 3 months |


## Frequently asked questions

### Is ERAI! free?

ERAI! is free to download, with no in-app purchases.

### Is AI目標達成マンダラチャート free?

AI目標達成マンダラチャート is free to download, with in-app purchases available.

### Do ERAI! or AI目標達成マンダラチャート have ads?

Both ERAI! and AI目標達成マンダラチャート show ads.

### Which is updated more often, ERAI! or AI目標達成マンダラチャート?

ERAI! ships an update weekly, and AI目標達成マンダラチャート every 9 days. Most recently, ERAI! was updated on October 16, 2026 and AI目標達成マンダラチャート on October 8, 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.*