# ClueStars Junior vs MindDuel

The clearest difference is in-app purchases: ClueStars Junior at none against MindDuel's 3. MindDuel's advantage is update cadence (every 3 days vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. MindDuel sells 3 in-app purchases, starting at $0.49 per month. ClueStars Junior asks for nothing beyond the download.

ClueStars Junior ships an update every 3 months, MindDuel every 3 days. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | ClueStars Junior | MindDuel |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 days** |
| Size | 63 MB | 10 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Shape Labs AB](https://appshunter.io/developer/1535699607) | [Petter Røisland](https://appshunter.io/developer/1896689561) |

## What reviewers say

### ClueStars Junior

[App page](https://appshunter.io/ios/app/cluestars-junior-image-quiz/id6480425088)

**Features:** macOS Compatibility

**In-app purchases:** none


### MindDuel

[App page](https://appshunter.io/ios/app/mindduel/id6769802682)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MindDuel Premium Monthly | $0.49 | per month |
| MindDuel Premium Yearly | $7.99 | per year |
| MindDuel Lifetime | $1.99 | one-time |


## Frequently asked questions

### Is ClueStars Junior free?

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

### Is MindDuel free?

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

### Do ClueStars Junior or MindDuel have ads?

Neither ClueStars Junior nor MindDuel shows ads.

### Which is updated more often, ClueStars Junior or MindDuel?

ClueStars Junior ships an update every 3 months, and MindDuel every 3 days. Most recently, ClueStars Junior was updated on October 27, 2026 and MindDuel on October 28, 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.*