# Stimmtrainer vs Kienzle Academy

The clearest difference is in-app purchases: Stimmtrainer at none against Kienzle Academy's 10. Stimmtrainer also leads on iOS requirement (9.3 vs 12.0). Kienzle Academy's advantage is update cadence (every 2 months vs every 28 months). On price, ads and device support there is nothing between them.

Both are free to download. Kienzle Academy sells 10 one-off in-app purchases. Stimmtrainer asks for nothing beyond the download.

Stimmtrainer ships an update every 28 months, Kienzle Academy every 2 months. The most recent releases landed on October 22, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Stimmtrainer | Kienzle Academy |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 19.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 28 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 47 MB | 56 MB |
| Requires iOS | **9.3** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Beltz Verlagsgruppe GmbH & Co. KG](https://appshunter.io/developer/681764955) | [Michael Kienzle](https://appshunter.io/developer/1566872092) |

## What reviewers say

### Stimmtrainer

[App page](https://appshunter.io/ios/app/stimmtrainer/id797001718)

Enhance your professional speaking skills with expert guidance. Learn to use your voice effectively in any situation through professional audio examples and by recording and reviewing your own speech.

**Highlights:** Professional speaking techniques, Audio examples from professionals, Voice recording and analysis, Progress tracking, Complementary to 'Sprechen wie der Profi' book

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

**In-app purchases:** none


### Kienzle Academy

[App page](https://appshunter.io/ios/app/kienzle-academy/id1566872090)

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Schnupperkurs Hörakustik | Free | one-time |
| Erfolgreiche Expertenrhetorik | Free | one-time |
| Videokurs: Kunden begeistern | $0.99 | one-time |
| Kienzle Hörakustik Academy | $0.99 | one-time |
| Erfolgreiche Experten-Rhetorik | $0.99 | one-time |
| Kienzle Experten Academy | $0.99 | one-time |
| Videokurs: Digital begeistern | $84.99 | one-time |
| Auf Messen sich messen | $179.99 | one-time |
| Expertenrhetorik 2.0 | $349.99 | one-time |
| Videokurs: Hörakustik 2.0 | $349.99 | one-time |


## Frequently asked questions

### Is Stimmtrainer free?

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

### Is Kienzle Academy free?

Kienzle Academy is free to download, with in-app purchases available.

### Do Stimmtrainer or Kienzle Academy have ads?

Neither Stimmtrainer nor Kienzle Academy shows ads.

### Which is updated more often, Stimmtrainer or Kienzle Academy?

Stimmtrainer ships an update every 28 months, and Kienzle Academy every 2 months. Most recently, Stimmtrainer was updated on October 22, 2026 and Kienzle Academy on October 16, 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.*