# RAIO App vs INN Academy

The clearest difference is in-app purchases: INN Academy at none against RAIO App's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. RAIO App sells 2 in-app purchases, starting at $19.99 per month. INN Academy asks for nothing beyond the download.

RAIO App ships an update every 6 weeks, INN Academy monthly. The most recent releases landed on November 3, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | RAIO App | INN Academy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.7 (43 ratings)](https://appshunter.io/ios/app/raio-app/id6446694876/reviews)** | — |
| Number of ratings | **43** | — |
| Positive reviews | 20.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Monthly** |
| Monetization | Free with in-app purchases | — |
| Size | 88 MB | 40 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kale Anders](https://appshunter.io/developer/1678765749) | [Quierelo](https://appshunter.io/developer/983830159) |

## What reviewers say

### RAIO App

[App page](https://appshunter.io/ios/app/raio-app/id6446694876)

This app uses spaced repetition technology and real-life sentences to help you learn grammar and vocabulary in context. It aims to improve retention, reduce translation in your head, and help you start thinking in the language you're learning.

**Highlights:** Spaced repetition technology, Sentence-based learning, Learn grammar and vocabulary in context, Reduce translation in your head, Think in the target language, Personalized progress reports, Gamification features

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly - Standard Plan | $19.99 | per month |
| Annual - SAVE 20%! | $179.99 | per year |


### INN Academy

[App page](https://appshunter.io/ios/app/inn-academy/id6747076835)

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

**In-app purchases:** none


## Frequently asked questions

### Is RAIO App free?

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

### Is INN Academy free?

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

### Do RAIO App or INN Academy have ads?

Neither RAIO App nor INN Academy shows ads.

### Which is updated more often, RAIO App or INN Academy?

RAIO App ships an update every 6 weeks, and INN Academy monthly. Most recently, RAIO App was updated on November 3, 2026 and INN Academy 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.*