# Riddlerr vs The Quest for Knowledge

The clearest difference is ads: The Quest for Knowledge at none against Riddlerr's shown. The Quest for Knowledge also leads on update cadence (every 11 days vs every 3 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

Riddlerr ships an update every 3 weeks, The Quest for Knowledge every 11 days. The most recent releases landed on August 4, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | Riddlerr | The Quest for Knowledge |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Every 11 days** |
| Size | 20 MB | 6 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Vladyslav Yermakov](https://appshunter.io/developer/1659418110) | [NapTech Lab](https://appshunter.io/developer/1561520677) |

## What reviewers say

### Riddlerr

[App page](https://appshunter.io/ios/app/riddlerr/id1659418108)

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

**In-app purchases:** none


### The Quest for Knowledge

[App page](https://appshunter.io/ios/app/the-quest-for-knowledge/id6504160543)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Riddlerr free?

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

### Is The Quest for Knowledge free?

The Quest for Knowledge is free to download, with no in-app purchases.

### Do Riddlerr or The Quest for Knowledge have ads?

Riddlerr shows ads; The Quest for Knowledge does not.

### Which is updated more often, Riddlerr or The Quest for Knowledge?

Riddlerr ships an update every 3 weeks, and The Quest for Knowledge every 11 days. Most recently, Riddlerr was updated on August 4, 2026 and The Quest for Knowledge on September 11, 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.*