# SignZ vs CYDAS

The clearest difference is update cadence: CYDAS at monthly against SignZ's every 2 months. CYDAS also leads on iOS requirement (10.0 vs 17.5). 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.

SignZ ships an update every 2 months, CYDAS monthly. The most recent releases landed on October 9, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | SignZ | CYDAS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Size | 74 MB | 35 MB |
| Requires iOS | 17.5 | **10.0** |
| Devices | iPhone, iPad | **iPhone, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [TIROS CO., LTD](https://appshunter.io/developer/1395693960) | [CYDAS, inc.](https://appshunter.io/developer/1512372519) |

## What reviewers say

### SignZ

[App page](https://appshunter.io/ios/app/signz/id1395693961)

**Features:** macOS Compatibility

**In-app purchases:** none


### CYDAS

[App page](https://appshunter.io/ios/app/cydas/id1512372520)

**In-app purchases:** none


## Frequently asked questions

### Is SignZ free?

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

### Is CYDAS free?

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

### Do SignZ or CYDAS have ads?

Neither SignZ nor CYDAS shows ads.

### Which is updated more often, SignZ or CYDAS?

SignZ ships an update every 2 months, and CYDAS monthly. Most recently, SignZ was updated on October 9, 2026 and CYDAS on October 4, 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.*