# SBF Theorie vs Vivarium

The clearest difference is in-app purchases: Vivarium at none against SBF Theorie's 10. Vivarium also leads on ads (none vs shown) and update cadence (daily vs every 6 weeks). SBF Theorie's advantage is iOS requirement (18.6 vs 26.2). On price and device support there is nothing between them.

Both are free to download. SBF Theorie sells 10 one-off in-app purchases. Vivarium asks for nothing beyond the download.

SBF Theorie ships an update every 6 weeks, Vivarium daily. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | SBF Theorie | Vivarium |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 90.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 6 weeks | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 27 MB | 14 MB |
| Requires iOS | **18.6** | 26.2 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ralph Schoen](https://appshunter.io/developer/839483467) | [Hans Renz](https://appshunter.io/developer/861362527) |

## What reviewers say

### SBF Theorie

[App page](https://appshunter.io/ios/app/sbf-theorie/id910164690)

Prepare for your boating license exams with interactive learning modules and simulated tests. Master all official questions using a spaced repetition system and track your progress with detailed statistics. The app offers a comprehensive study experience for various boating and radio licenses.

**Highlights:** Leitner Box Score learning system, Learn questions by category or full catalog, Spaced repetition for long-term retention, Mark and practice specific questions, Simulate theory exams under real conditions, Review exam errors and add to custom catalog, Progress tracking with percentage indicators

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| LRC Funk (Support Level S) | $8.99 | one-time |
| SBF Binnen Theorie (without ads) | $8.99 | one-time |
| SRC Funk (Support Level S) | $8.99 | one-time |
| UBI Funk (Support Level S) | $8.99 | one-time |
| SBF See (Support Level M) | $11.99 | one-time |
| LRC Funk (Support Level M) | $14.99 | one-time |
| SRC Funk (Support Level M) | $14.99 | one-time |
| UBI Funk (Support Level M) | $14.99 | one-time |
| SBF See (Support Level L) | $17.99 | one-time |
| SBF See (Support Level XL) | $24.99 | one-time |


### Vivarium

[App page](https://appshunter.io/ios/app/vivarium/id6760226672)

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

**In-app purchases:** none


## Frequently asked questions

### Is SBF Theorie free?

SBF Theorie is free to download, with in-app purchases available.

### Is Vivarium free?

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

### Do SBF Theorie or Vivarium have ads?

SBF Theorie shows ads; Vivarium does not.

### Which is updated more often, SBF Theorie or Vivarium?

SBF Theorie ships an update every 6 weeks, and Vivarium daily. Most recently, SBF Theorie was updated on November 1, 2026 and Vivarium on October 31, 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.*