# DDeBook vs LaunchPad Discovery

The clearest difference is update cadence: DDeBook at every 5 months against LaunchPad Discovery's every 36 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

DDeBook ships an update every 5 months, LaunchPad Discovery every 36 months. The most recent releases landed on October 9, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | DDeBook | LaunchPad Discovery |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 36 months |
| Size | 43 MB | 22 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Openserve Co.,Ltd.](https://appshunter.io/developer/479158615) | [Clear Design Group LLC](https://appshunter.io/developer/1329014718) |

## What reviewers say

### DDeBook

[App page](https://appshunter.io/ios/app/ddebook/id957285316)

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

**In-app purchases:** none


### LaunchPad Discovery

[App page](https://appshunter.io/ios/app/launchpad-discovery/id1663509538)

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

**In-app purchases:** none


## Frequently asked questions

### Is DDeBook free?

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

### Is LaunchPad Discovery free?

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

### Do DDeBook or LaunchPad Discovery have ads?

Neither DDeBook nor LaunchPad Discovery shows ads.

### Which is updated more often, DDeBook or LaunchPad Discovery?

DDeBook ships an update every 5 months, and LaunchPad Discovery every 36 months. Most recently, DDeBook was updated on October 9, 2026 and LaunchPad Discovery on October 2, 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.*