# C1DO1 vs Eustakio

The clearest difference is iOS requirement: C1DO1 at 14.0 against Eustakio's 16.4. On price, update cadence, ads and in-app purchases there is nothing between them.

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

C1DO1 ships an update fortnightly, Eustakio every 2 weeks. The most recent releases landed on September 19, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | C1DO1 | Eustakio |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 weeks |
| Size | 6 MB | 39 MB |
| Requires iOS | **14.0** | 16.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [VSB Tecnologias Limitada](https://appshunter.io/developer/1359457345) | [Eustakio SpA](https://appshunter.io/developer/1834042386) |

## What reviewers say

### C1DO1

[App page](https://appshunter.io/ios/app/c1do1/id1477623946)

**Features:** macOS Compatibility

**In-app purchases:** none


### Eustakio

[App page](https://appshunter.io/ios/app/eustakio/id6751214359)

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

**In-app purchases:** none


## Frequently asked questions

### Is C1DO1 free?

C1DO1 is free to download, with no in-app purchases.

### Is Eustakio free?

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

### Do C1DO1 or Eustakio have ads?

Neither C1DO1 nor Eustakio shows ads.

### Which is updated more often, C1DO1 or Eustakio?

C1DO1 ships an update fortnightly, and Eustakio every 2 weeks. Most recently, C1DO1 was updated on September 19, 2026 and Eustakio on October 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.*