ReDi vs O Words
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ReDi
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.
- Auditory and speech practice
- Independent user exercises
- Real-time feedback
- Multiple difficulty levels
- Suitable for hearing aid/implant users
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ReDi is an easy-to-use rehabilitation app designed to assist users of hearing technology to practice their auditory and speech skills. The exercises can be performed independently by the user. This app is logically structured, offers different levels of difficulty, and provides immediate feedback. ReDi works whenever and wherever you wish on your mobile device. - Scaffolds through different auditory and speech practice levels. - Listening and speech feedback in real time. - Ideal for individuals who don't have practice partners. - Suitable for users of hearing implants and hearing aids. - Founded in clinical practice. - Recommended for older children, teenagers, and adults. - ReDi is continuously developed and optimized. - Platform based, therefore always available. Get ready to practice with ReDi!
O Words
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- Only Words is an app that makes learning foreign words easy with stories. - With a single tap, you can learn the meanings of the words in the stories you read. - You can choose word groups in the category you want and learn only those words. - You can listen to word pronunciations. - Thanks to its simple and user-friendly interface, students of all ages and levels can improve their language skills at their own pace and according to their interests. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | ReDi | O Words |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (264 ratings) — better | — |
| Positive reviews | 57.1% of reviews | — |
| Number of ratings | 264 — better | — |
| Update frequency | Every 5 days — better | Every 11 days |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 92 MB | 49 MB |
| Age rating | 4+ | 17+ |
| Developer | MED-EL | Alp Can Marangoz |
In-app purchases
ReDi
No in-app purchases
O Words
- 1 Month of Premium.$0.991 Month
- 1 Year of Premium.$5.991 Year









