# DP vs DP

The clearest difference is update cadence: DP at every 4 days against DP's every 2 months. DP also leads on device support (3 vs 1) and iOS requirement (15.1 vs 17.0). On price, ads and in-app purchases there is nothing between them.

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

DP ships an update every 4 days, DP every 2 months. The most recent releases landed on October 24, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | DP | DP |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 2 months |
| Size | 145 MB | 6 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [CHOI SEONGMIN](https://appshunter.io/developer/6772332527) | [Shunya Iwasaki](https://appshunter.io/developer/1796095304) |

## What reviewers say

### DP

[App page](https://appshunter.io/ios/app/dp-900-data-fundamentals-study/id6782107654)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DP-900 Lifetime Access | $4.99 | 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 DP free?

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

### Is DP free?

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

### Do DP or DP have ads?

Neither DP nor DP shows ads.

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

DP ships an update every 4 days, and DP every 2 months. Most recently, DP 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.*