# PrepAiro GRE vs RIFFL

The clearest difference is iOS requirement: PrepAiro GRE at 13.0 against RIFFL's 15.0. 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.

## The numbers

| Metric | PrepAiro GRE | RIFFL |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 5 days |
| Monetization | — | Free with in-app purchases |
| Size | 145 MB | 52 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [PrepAIro](https://appshunter.io/developer/1795391659) | [Arijit Mukhopadhyay](https://appshunter.io/developer/6787380875) |

## What reviewers say

### PrepAiro GRE

[App page](https://appshunter.io/ios/app/prepairo-gre/id6757590892)

**In-app purchases:** none


### RIFFL

[App page](https://appshunter.io/ios/app/riffl-audios-with-perspective/id6787380873)

This audio-first learning platform delivers investigative journalism condensed into immersive audio experiences. It focuses on providing factual, well-researched insights without bias, breaking down complex current affairs into short, focused sessions for critical thinkers.

**Highlights:** Unbiased audio micro-learning, Investigative journalism in audio, Short-form deep dives, Factual, well-researched insights, Premium audio quality, Critical thinking focus

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

**In-app purchases:** none


## Frequently asked questions

### Is PrepAiro GRE free?

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

### Is RIFFL free?

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

### Do PrepAiro GRE or RIFFL have ads?

Neither PrepAiro GRE nor RIFFL shows ads.

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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.*