# ReDi vs O Words

The clearest difference is in-app purchases: ReDi at none against O Words's 2. ReDi also leads on ads (none vs shown) and update cadence (every 5 days vs every 11 days). On price, device support and iOS requirement there is nothing between them.

Both are free to download. O Words sells 2 in-app purchases, starting at $0.99 per month. ReDi asks for nothing beyond the download.

ReDi ships an update every 5 days, O Words every 11 days. The most recent releases landed on September 18, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | ReDi | O Words |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (264 ratings)](https://appshunter.io/ios/app/redi/id1506576790/reviews)** | — |
| Number of ratings | **264** | — |
| Positive reviews | 57.1% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 5 days** | Every 11 days |
| Monetization | Free | — |
| Size | 92 MB | 49 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [MED-EL](https://appshunter.io/developer/455935145) | [Alp Can Marangoz](https://appshunter.io/developer/1655568075) |

## What reviewers say

### ReDi

[App page](https://appshunter.io/ios/app/redi/id1506576790)

This app helps users of hearing technology practice auditory and speech skills independently. It offers structured exercises with immediate feedback, suitable for various difficulty levels and available on mobile devices.

**Highlights:** Auditory and speech practice, Independent user exercises, Real-time feedback, Multiple difficulty levels, Suitable for hearing aid/implant users

**In-app purchases:** none


### O Words

[App page](https://appshunter.io/ios/app/o-words/id6477305214)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month of Premium. | $0.99 | per month |
| 1 Year of Premium. | $5.99 | per year |


## Frequently asked questions

### Is ReDi free?

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

### Is O Words free?

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

### Do ReDi or O Words have ads?

O Words shows ads; ReDi does not.

### Which is updated more often, ReDi or O Words?

ReDi ships an update every 5 days, and O Words every 11 days. Most recently, ReDi was updated on September 18, 2026 and O Words on September 23, 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.*