# STAR e vs Zlín Architecture Manual

The clearest difference is update cadence: STAR e at every 3 months against Zlín Architecture Manual's every 18 months. Zlín Architecture Manual's advantage is iOS requirement (13.0 vs 15.0). 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.

STAR e ships an update every 3 months, Zlín Architecture Manual every 18 months. Both last shipped on November 7, 2026.

## The numbers

| Metric | STAR e | Zlín Architecture Manual |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 18 months |
| Size | 6 MB | 17 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [H&B group s.r.o.](https://appshunter.io/developer/1558817816) | [ACONTE, s.r.o.](https://appshunter.io/developer/1321843097) |

## What reviewers say

### STAR e

[App page](https://appshunter.io/ios/app/star-e-key/id1558817814)

**Features:** macOS Compatibility

**In-app purchases:** none


### Zlín Architecture Manual

[App page](https://appshunter.io/ios/app/zlin-architecture-manual/id1664435247)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is STAR e free?

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

### Is Zlín Architecture Manual free?

Zlín Architecture Manual is free to download, with no in-app purchases.

### Do STAR e or Zlín Architecture Manual have ads?

Neither STAR e nor Zlín Architecture Manual shows ads.

### Which is updated more often, STAR e or Zlín Architecture Manual?

STAR e ships an update every 3 months, and Zlín Architecture Manual every 18 months. Most recently, STAR e was updated on November 7, 2026 and Zlín Architecture Manual on November 7, 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.*