# CHEST vs OpoZulo

The clearest difference is in-app purchases: CHEST at none against OpoZulo's 3. CHEST also leads on iOS requirement (13.0 vs 15.0). OpoZulo's advantage is update cadence (weekly vs every 3 weeks). On price, ads and device support there is nothing between them.

Both are free to download. OpoZulo sells 3 in-app purchases, starting at $3.99 per month. CHEST asks for nothing beyond the download.

CHEST ships an update every 3 weeks, OpoZulo weekly. The most recent releases landed on September 22, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | CHEST | OpoZulo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Size | 35 MB | 65 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [PABLO GARCIA ZARZA](https://appshunter.io/developer/1764263747) | [Carlos Garcia Marmol](https://appshunter.io/developer/6795084870) |

## What reviewers say

### CHEST

[App page](https://appshunter.io/ios/app/chest-gsic/id6654914759)

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

**In-app purchases:** none


### OpoZulo

[App page](https://appshunter.io/ios/app/opozulo-planifica-oposiciones/id6795084868)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OpoZulo PRO Mensual | $3.99 | per month |
| OpoZulo PRO Descuento Anual | $19.99 | per year |
| OpoZulo PRO Anual | $29.99 | per year |


## Frequently asked questions

### Is CHEST free?

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

### Is OpoZulo free?

OpoZulo is free to download, with in-app purchases available.

### Do CHEST or OpoZulo have ads?

Neither CHEST nor OpoZulo shows ads.

### Which is updated more often, CHEST or OpoZulo?

CHEST ships an update every 3 weeks, and OpoZulo weekly. Most recently, CHEST was updated on September 22, 2026 and OpoZulo on September 24, 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.*