# Transponder Elev vs Sound Touch

The clearest difference is price: Transponder Elev at Free against Sound Touch's $19.99. Sound Touch's advantage is update cadence (every 3 weeks vs every 6 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Transponder Elev is free to download; Sound Touch costs $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Transponder Elev ships an update every 6 months, Sound Touch every 3 weeks. The most recent releases landed on October 15, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Transponder Elev | Sound Touch |
| --- | --- | --- |
| Price | **Free** | $19.99 |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/sound-touch-school-edition/id6504396497/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 weeks** |
| Monetization | — | Paid |
| Size | 38 MB | 649 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Transponder AS](https://appshunter.io/developer/926724247) | [SoundTouch Interactive](https://appshunter.io/developer/348094443) |

## What reviewers say

### Transponder Elev

[App page](https://appshunter.io/ios/app/transponder-elev/id6444362519)

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

**In-app purchases:** none


### Sound Touch

[App page](https://appshunter.io/ios/app/sound-touch-school-edition/id6504396497)

This educational app uses real-life photos and interactive audio to teach young children words, sounds, and early vocabulary. It features over 400 flashcards across various categories and supports 35 languages, making it ideal for early language development.

**Highlights:** 400+ real-world flashcards, Authentic sounds and real photos, Up to 6 variations per item, 35 languages supported, Kid-friendly navigation, Teaches first words and vocabulary

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Transponder Elev free?

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

### Is Sound Touch free?

Sound Touch costs $19.99, with no in-app purchases.

### Do Transponder Elev or Sound Touch have ads?

Neither Transponder Elev nor Sound Touch shows ads.

### Which is updated more often, Transponder Elev or Sound Touch?

Transponder Elev ships an update every 6 months, and Sound Touch every 3 weeks. Most recently, Transponder Elev was updated on October 15, 2026 and Sound Touch on October 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.*