# ReDi vs Sound Reflection

The clearest difference is price: ReDi at Free against Sound Reflection's $1.99. ReDi also leads on update cadence (weekly vs every 42 months). Sound Reflection's advantage is iOS requirement (12.0 vs 15.6). On ads, in-app purchases and device support there is nothing between them.

ReDi is free to download; Sound Reflection costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReDi ships an update weekly, Sound Reflection every 42 months. The most recent releases landed on November 11, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | ReDi | Sound Reflection |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[4.5 (318 ratings)](https://appshunter.io/ios/app/redi/id1506576790/reviews)** | — |
| Number of ratings | **318** | — |
| Positive reviews | 57.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 42 months |
| Monetization | Free | — |
| Size | 85 MB | 228 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MED-EL Elektromedizinische Geraete GmbH](https://appshunter.io/developer/455935145) | [VIRTUAL FILAMENTS PRIVATE LIMITED](https://appshunter.io/developer/1474217212) |

## 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


### Sound Reflection

[App page](https://appshunter.io/ios/app/sound-reflection-edutech-era/id1633791860)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ReDi free?

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

### Is Sound Reflection free?

Sound Reflection costs $1.99, with no in-app purchases.

### Do ReDi or Sound Reflection have ads?

Neither ReDi nor Sound Reflection shows ads.

### Which is updated more often, ReDi or Sound Reflection?

ReDi ships an update weekly, and Sound Reflection every 42 months. Most recently, ReDi was updated on November 11, 2026 and Sound Reflection on November 3, 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.*