# Ryddle vs PrimeThink

The clearest difference is in-app purchases: PrimeThink at none against Ryddle's 4. Ryddle's advantage is update cadence (every 9 days vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Ryddle sells 4 in-app purchases, starting at $6.99 per month. PrimeThink asks for nothing beyond the download.

Ryddle ships an update every 9 days, PrimeThink every 3 weeks. The most recent releases landed on October 15, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Ryddle | PrimeThink |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 3 weeks |
| Size | 42 MB | 67 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [SageSight](https://appshunter.io/developer/1757306695) | [Novaware Ltd](https://appshunter.io/developer/1502285848) |

## What reviewers say

### Ryddle

[App page](https://appshunter.io/ios/app/ryddle-access-all-ai-models/id6667092588)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Starter Monthly | $6.99 | per month |
| Plus Monthly | $19.99 | per month |
| Monthly | $19.99 | per month |
| Annual | $199.99 | per year |


### PrimeThink

[App page](https://appshunter.io/ios/app/primethink/id6744278915)

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

**In-app purchases:** none


## Frequently asked questions

### Is Ryddle free?

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

### Is PrimeThink free?

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

### Do Ryddle or PrimeThink have ads?

Neither Ryddle nor PrimeThink shows ads.

### Which is updated more often, Ryddle or PrimeThink?

Ryddle ships an update every 9 days, and PrimeThink every 3 weeks. Most recently, Ryddle was updated on October 15, 2026 and PrimeThink on October 13, 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.*