# iDictionary vs DP

The clearest difference is price: DP at Free against iDictionary's $0.99. DP also leads on in-app purchases (none vs 1) and iOS requirement (15.0 vs 17.0). iDictionary's advantage is update cadence (every 6 weeks vs every 3 months). On ads and device support there is nothing between them.

DP is free to download; iDictionary costs $0.99 up front. iDictionary sells 1 one-off in-app purchase. DP asks for nothing beyond the download.

iDictionary ships an update every 6 weeks, DP every 3 months. The most recent releases landed on October 25, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | iDictionary | DP |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 3 months |
| Size | 80 MB | 27 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [天从 何](https://appshunter.io/developer/914453386) | [Davy Raitt](https://appshunter.io/developer/1795318281) |

## What reviewers say

### iDictionary

[App page](https://appshunter.io/ios/app/idictionary-chinese-dict/id1459028775)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Reward developers | $0.99 | one-time |


### DP

[App page](https://appshunter.io/ios/app/dp-800-sql-ai-developer-prep/id6772457661)

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

**In-app purchases:** none


## Frequently asked questions

### Is iDictionary free?

iDictionary costs $0.99, and also offers in-app purchases.

### Is DP free?

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

### Do iDictionary or DP have ads?

Neither iDictionary nor DP shows ads.

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

iDictionary ships an update every 6 weeks, and DP every 3 months. Most recently, iDictionary was updated on October 25, 2026 and DP on October 14, 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.*