# Vocal Tech vs SBF Knoten

The clearest difference is review sentiment: Vocal Tech at 83% against SBF Knoten's 0%. Vocal Tech also leads on price ($0.99 vs $3.99). SBF Knoten's advantage is update cadence (every 4 months vs every 8 months). On ads, in-app purchases, monetization model and device support there is nothing between them.

Vocal Tech costs $0.99 and SBF Knoten $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Vocal Tech ships an update every 8 months, SBF Knoten every 4 months. The most recent releases landed on September 12, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Vocal Tech | SBF Knoten |
| --- | --- | --- |
| Price | **$0.99** | $3.99 |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/vocal-tech/id615350694/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | **83.3% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 4 months** |
| Monetization | Paid | Paid |
| Size | 81 MB | 20 MB |
| Requires iOS | 17.0 | **16** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Jeremy Hunt](https://appshunter.io/developer/615350697) | [Ralf Goritz](https://appshunter.io/developer/418069908) |

## What reviewers say

### Vocal Tech

[App page](https://appshunter.io/ios/app/vocal-tech/id615350694)

An interactive guide for classical singing students, focusing on phonation, resonance, posture, and breathing. It offers vocal exercises with recorded examples, a voice recorder, and piano accompaniment.

**Highlights:** Classical singing guide, Vocal technique lessons, Phonation, Resonance, Posture, Breathing, Vocal exercises with examples, Voice recorder, Piano accompaniment

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

**In-app purchases:** none


### SBF Knoten

[App page](https://appshunter.io/ios/app/sbf-knoten/id1277739976)

Learn and master essential knots for boating exams with step-by-step instructions and animations. Understand the usage, advantages, and disadvantages of each knot. Offline access available.

**Highlights:** Step-by-step knot tying instructions, Animated knot demonstrations, Knot usage and variant explanations, Covers SBF Binnen and SBF See knots, Offline functionality, Includes 10 essential knots

**In-app purchases:** none


## Frequently asked questions

### Is Vocal Tech free?

Vocal Tech costs $0.99, with no in-app purchases.

### Is SBF Knoten free?

SBF Knoten costs $3.99, with no in-app purchases.

### Do Vocal Tech or SBF Knoten have ads?

Neither Vocal Tech nor SBF Knoten shows ads.

### Which is updated more often, Vocal Tech or SBF Knoten?

Vocal Tech ships an update every 8 months, and SBF Knoten every 4 months. Most recently, Vocal Tech was updated on September 12, 2026 and SBF Knoten 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.*