# Idea x Knock vs Random Picker

The clearest difference is in-app purchases: Idea x Knock at none against Random Picker's 2. Idea x Knock also leads on update cadence (weekly vs every 13 months) and iOS requirement (13.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Random Picker sells 2 in-app purchases, starting at $4.99 per month. Idea x Knock asks for nothing beyond the download.

Idea x Knock ships an update weekly, Random Picker every 13 months. The most recent releases landed on November 7, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Idea x Knock | Random Picker |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Weekly** | Every 13 months |
| Size | 23 MB | 27 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kosuke Shimada](https://appshunter.io/developer/1529796493) | [kota tada](https://appshunter.io/developer/1658942612) |

## What reviewers say

### Idea x Knock

[App page](https://appshunter.io/ios/app/idea-x-knock/id1613942064)

**Features:** macOS Compatibility

**In-app purchases:** none


### Random Picker

[App page](https://appshunter.io/ios/app/random-picker-randomidea/id6689513139)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad-free for 1 month | $4.99 | per month |
| Ad-free for 1 year | $49.99 | per year |


## Frequently asked questions

### Is Idea x Knock free?

Idea x Knock is free to download, with no in-app purchases.

### Is Random Picker free?

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

### Do Idea x Knock or Random Picker have ads?

Both Idea x Knock and Random Picker show ads.

### Which is updated more often, Idea x Knock or Random Picker?

Idea x Knock ships an update weekly, and Random Picker every 13 months. Most recently, Idea x Knock was updated on November 7, 2026 and Random Picker on November 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.*