# AI vs DP

The clearest difference is ads: DP at none against AI's shown. AI's advantage is update cadence (every 3 weeks vs every 2 months) and device support (3 vs 1). On price and in-app purchases there is nothing between them.

Both are free to download. AI sells 3 one-off in-app purchases and DP sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

AI ships an update every 3 weeks, DP every 2 months. The most recent releases landed on October 24, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | AI | DP |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Size | 184 MB | 6 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [合同会社HopStep](https://appshunter.io/developer/1749721044) | [Shunya Iwasaki](https://appshunter.io/developer/1796095304) |

## What reviewers say

### AI

[App page](https://appshunter.io/ios/app/ai-901-study-and-practice/id6759863242)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Complete Pack - Sale | $5.99 | one-time |
| Complete Pack | $9.99 | one-time |
| Lifetime Premium | $11.99 | one-time |


### DP

[App page](https://appshunter.io/ios/app/dp-900/id6789575681)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアム(買い切り) | $14.99 | one-time |


## Frequently asked questions

### Is AI free?

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

### Is DP free?

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

### Do AI or DP have ads?

AI shows ads; DP does not.

### Which is updated more often, AI or DP?

AI ships an update every 3 weeks, and DP every 2 months. Most recently, AI was updated on October 24, 2026 and DP on October 20, 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.*