# Bootstheorie.ch Kat. A/D vs ETH polybox

The clearest difference is price: ETH polybox at Free against Bootstheorie.ch Kat. A/D's $19.99. ETH polybox also leads on rating (5.0 vs 2.0). Bootstheorie.ch Kat. A/D's advantage is iOS requirement (14.0 vs 17.0). On ratings volume, update cadence, ads and in-app purchases there is nothing between them.

ETH polybox is free to download; Bootstheorie.ch Kat. A/D costs $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ETH polybox holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Bootstheorie.ch Kat. A/D ships an update every 7 months, ETH polybox every 6 months. The most recent releases landed on October 16, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Bootstheorie.ch Kat. A/D | ETH polybox |
| --- | --- | --- |
| Price | $19.99 | **Free** |
| Rating | [2.0 (1 ratings)](https://appshunter.io/ios/app/bootstheoriech-kat-ad/id732221427/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/eth-polybox/id909475675/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 6 months** |
| Monetization | Paid | **Free** |
| Size | 92 MB | 229 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Gehri Bootsschule und Informatik](https://appshunter.io/developer/710472704) | [ETH Zurich](https://appshunter.io/developer/438432132) |

## What reviewers say

### Bootstheorie.ch Kat. A/D

[App page](https://appshunter.io/ios/app/bootstheoriech-kat-ad/id732221427)

Prepare for your Swiss motorboat and sailing license exams with comprehensive study materials. Access over 540 up-to-date questions, detailed explanations with visuals, and practice exams. Study offline and track your progress with this proven trainer.

**Highlights:** Over 540 current exam questions, Detailed explanations with photos/illustrations, Practice exam mode, Save difficult questions for review, Progress statistics, Offline access, Live updates for questions

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

**In-app purchases:** none


### ETH polybox

[App page](https://appshunter.io/ios/app/eth-polybox/id909475675)

This app provides secure online data storage and exchange for ETH Zurich members. It functions as a digital storage solution, offering 50 GB of space on campus servers to avoid external storage risks. Sync clients are available for easy access across devices.

**Highlights:** Secure online data storage, Data exchange for ETH members, 50 GB storage space, Avoids external storage, Sync clients for all OS, ETH account required

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

**In-app purchases:** none


## Frequently asked questions

### Is Bootstheorie.ch Kat. A/D free?

Bootstheorie.ch Kat. A/D costs $19.99, with no in-app purchases.

### Is ETH polybox free?

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

### Which has better reviews, Bootstheorie.ch Kat. A/D or ETH polybox?

ETH polybox is rated higher. Bootstheorie.ch Kat. A/D averages 2.0 out of 5 from 1 ratings, while ETH polybox averages 5.0 from 1 ratings.

### Do Bootstheorie.ch Kat. A/D or ETH polybox have ads?

Neither Bootstheorie.ch Kat. A/D nor ETH polybox shows ads.

### Which is updated more often, Bootstheorie.ch Kat. A/D or ETH polybox?

Bootstheorie.ch Kat. A/D ships an update every 7 months, and ETH polybox every 6 months. Most recently, Bootstheorie.ch Kat. A/D was updated on October 16, 2026 and ETH polybox on September 27, 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.*