Vocal Tech vs SBF Knoten
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Vocal Tech
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.
- Classical singing guide
- Vocal technique lessons
- Phonation, Resonance, Posture, Breathing
- Vocal exercises with examples
- Voice recorder
- Piano accompaniment
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Vocal Tech is an interactive guide to classical singing. It is intended for students of classical vocal music: opera, oratorio, song literature, etc. Any student of singing hoping to build a solid technical foundation can use Vocal Tech. The app discusses Phonation, Resonance, Posture, and Breathing. It includes vocal exercises with recorded examples and a voice recorder for the student, as well as piano accompaniment for exercises. A tenured university professor with a doctorate in voice performance and vocal pedagogy from Indiana University created Vocal Tech.
SBF Knoten
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.
- 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
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Die App enthält alle prüfungsrelevanten Knoten für den SBF Binnen und SBF See. In kleinen, detaillierten Schritten wird gezeigt, wie man die Knoten knüpft. Oder man lässt eine Animation laufen. Zusätzlich werden die Verwendungsmöglichkeiten der einzelnen Knoten besprochen, sowie Vor- und Nachteile der verschiedenen Varianten erläutert. Folgende Knoten sind enthalten: • Achtknoten • Kreuzknoten • Palstek • Einfacher Schotstek • Doppelter Schotstek • Stopperstek • Webleinstek • Webleinstek auf Slip • Rundtörn mit zwei halben Schlägen • Belegen einer Klampe mit Kopfschlag Keine Internetverbindung erforderlich. Viel Erfolg bei der Prüfung!!!
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Vocal Tech | SBF Knoten |
|---|---|---|
| Price | $0.99 — better | $3.99 |
| Rating | 5.0 (3 ratings) — better | — |
| Positive reviews | 83.3% of reviews — better | 0.0% of reviews |
| Number of ratings | 3 — better | — |
| Update frequency | Every 8 months | Every 4 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 16 — better |
| Further details — not scored | ||
| Size | 81 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | Jeremy Hunt | Ralf Goritz |
Customer experience
Vocal Tech
SBF Knoten
In-app purchases
Vocal Tech
No in-app purchases
SBF Knoten
No in-app purchases
Questions
Is Vocal Tech free?
Is SBF Knoten free?
Do Vocal Tech or SBF Knoten have ads?
Which is updated more often, Vocal Tech or SBF Knoten?
Other comparisons
