# Projeto Caveira vs Ninja Cert Trainer

The clearest difference is update cadence: Ninja Cert Trainer at every 2 days against Projeto Caveira's every 3 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Projeto Caveira sells 1 one-off in-app purchase and Ninja Cert Trainer sells 1 in-app purchase, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Projeto Caveira ships an update every 3 weeks, Ninja Cert Trainer every 2 days. The most recent releases landed on October 28, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Projeto Caveira | Ninja Cert Trainer |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 35.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 days** |
| Size | 45 MB | 46 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | +4 |
| Developer | [Projeto Caveira](https://appshunter.io/developer/1696180906) | [Millenierds Tecnologia LTDA](https://appshunter.io/developer/6790911688) |

## What reviewers say

### Projeto Caveira

[App page](https://appshunter.io/ios/app/projeto-caveira/id6451004239)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CAVEIRA PASS CORE | $79.99 | one-time |


### Ninja Cert Trainer

[App page](https://appshunter.io/ios/app/ninja-cert-trainer/id6793245279)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plano mensal CCSA R82 | $1.99 | per month |


## Frequently asked questions

### Is Projeto Caveira free?

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

### Is Ninja Cert Trainer free?

Ninja Cert Trainer is free to download, with in-app purchases available.

### Do Projeto Caveira or Ninja Cert Trainer have ads?

Neither Projeto Caveira nor Ninja Cert Trainer shows ads.

### Which is updated more often, Projeto Caveira or Ninja Cert Trainer?

Projeto Caveira ships an update every 3 weeks, and Ninja Cert Trainer every 2 days. Most recently, Projeto Caveira was updated on October 28, 2026 and Ninja Cert Trainer on October 26, 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.*