# Sprechfunk SRC UBI vs SBF Knoten

The clearest difference is review sentiment: Sprechfunk SRC UBI at 67% against SBF Knoten's 0%. SBF Knoten's advantage is price ($3.99 vs $4.99). On update cadence, ads, in-app purchases and monetization model there is nothing between them.

Sprechfunk SRC UBI costs $4.99 and SBF Knoten $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Sprechfunk SRC UBI ships an update every 2 months, SBF Knoten every 4 months. The most recent releases landed on October 8, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Sprechfunk SRC UBI | SBF Knoten |
| --- | --- | --- |
| Price | $4.99 | **$3.99** |
| Positive reviews | **66.7% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Paid | Paid |
| Size | 30 MB | 20 MB |
| Requires iOS | **15.0** | 16 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jan Philipp Dahms](https://appshunter.io/developer/1474942026) | [Ralf Goritz](https://appshunter.io/developer/418069908) |

## What reviewers say

### Sprechfunk SRC UBI

[App page](https://appshunter.io/ios/app/sprechfunk-src-ubi/id367270082)

Prepare for maritime radio operator exams with interactive practice questions and study materials. Learn on the go with features like flashcards, progress tracking, and exam simulations. Covers SRC, UBI, and LRC certifications.

**Highlights:** Practice questions for SRC, UBI, LRC exams, Interactive learning with immediate feedback, Leitner learning system for focused study, Integrated search function, Offline access, Progress tracking and statistics, Exam simulation mode

**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 Sprechfunk SRC UBI free?

Sprechfunk SRC UBI costs $4.99, with no in-app purchases.

### Is SBF Knoten free?

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

### Do Sprechfunk SRC UBI or SBF Knoten have ads?

Neither Sprechfunk SRC UBI nor SBF Knoten shows ads.

### Which is updated more often, Sprechfunk SRC UBI or SBF Knoten?

Sprechfunk SRC UBI ships an update every 2 months, and SBF Knoten every 4 months. Most recently, Sprechfunk SRC UBI was updated on October 8, 2026 and SBF Knoten on October 13, 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.*