# ZWICKbox vs sursector checking

The clearest difference is update cadence: sursector checking at every 3 weeks against ZWICKbox's every 9 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ZWICKbox ships an update every 9 months, sursector checking every 3 weeks. The most recent releases landed on September 18, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | ZWICKbox | sursector checking |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 3 weeks** |
| Size | 13 MB | 42 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Patrick Wegmann](https://appshunter.io/developer/1475227922) | [TOLTEC SA](https://appshunter.io/developer/1413786590) |

## What reviewers say

### ZWICKbox

[App page](https://appshunter.io/ios/app/zwickbox/id1475227923)

**Features:** macOS Compatibility

**In-app purchases:** none


### sursector checking

[App page](https://appshunter.io/ios/app/sursector-checking/id1518186618)

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

**In-app purchases:** none


## Frequently asked questions

### Is ZWICKbox free?

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

### Is sursector checking free?

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

### Do ZWICKbox or sursector checking have ads?

Neither ZWICKbox nor sursector checking shows ads.

### Which is updated more often, ZWICKbox or sursector checking?

ZWICKbox ships an update every 9 months, and sursector checking every 3 weeks. Most recently, ZWICKbox was updated on September 18, 2026 and sursector checking on September 21, 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.*