# SysGeN vs Estar Digital Castro

The clearest difference is update cadence: SysGeN at every 2 weeks against Estar Digital Castro's every 6 weeks. 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.

SysGeN ships an update every 2 weeks, Estar Digital Castro every 6 weeks. Both last shipped on November 12, 2026.

## The numbers

| Metric | SysGeN | Estar Digital Castro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 6 weeks |
| Size | 43 MB | 67 MB |
| Requires iOS | 16.4 | **15.6** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Gen Fertilizantes](https://appshunter.io/developer/1777286303) | [Cidatec Tecnologia e sistema LTDA](https://appshunter.io/developer/1385878822) |

## What reviewers say

### SysGeN

[App page](https://appshunter.io/ios/app/sysgen/id1627231706)

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

**In-app purchases:** none


### Estar Digital Castro

[App page](https://appshunter.io/ios/app/estar-digital-castro/id6444539646)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SysGeN free?

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

### Is Estar Digital Castro free?

Estar Digital Castro is free to download, with no in-app purchases.

### Do SysGeN or Estar Digital Castro have ads?

Neither SysGeN nor Estar Digital Castro shows ads.

### Which is updated more often, SysGeN or Estar Digital Castro?

SysGeN ships an update every 2 weeks, and Estar Digital Castro every 6 weeks. Most recently, SysGeN was updated on November 12, 2026 and Estar Digital Castro on November 12, 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.*