# Estudei vs Ninja Cert Trainer

The clearest difference is update cadence: Ninja Cert Trainer at every 2 days against Estudei's every 9 days. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Estudei sells 1 in-app purchase, starting at $39.99 per year 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.

Estudei ships an update every 9 days, Ninja Cert Trainer every 2 days. The most recent releases landed on October 25, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Estudei | Ninja Cert Trainer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (7 ratings)](https://appshunter.io/ios/app/estudei/id6740289500/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 85.9% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 78 MB | 46 MB |
| Requires iOS | 16.4 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | +4 | +4 |
| Developer | [Estudei](https://appshunter.io/developer/1789384548) | [Millenierds Tecnologia LTDA](https://appshunter.io/developer/6790911688) |

## What reviewers say

### Estudei

[App page](https://appshunter.io/ios/app/estudei/id6740289500)

Organize seus estudos com um planejamento personalizado, revisões estratégicas e acompanhamento de desempenho. Identifique dificuldades e navegue por editais de forma eficiente. Ideal para estudantes de todos os níveis que buscam otimizar seu tempo e maximizar a eficiência.

**Highlights:** Personalized study planning, Strategic revision scheduling, Performance indicators, Study time logging, Difficulty mapping, Verticalized syllabus navigation

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Annual Subscription | $39.99 | per year |


### 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 Estudei free?

Estudei 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 Estudei or Ninja Cert Trainer have ads?

Neither Estudei nor Ninja Cert Trainer shows ads.

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

Estudei ships an update every 9 days, and Ninja Cert Trainer every 2 days. Most recently, Estudei was updated on October 25, 2026 and Ninja Cert Trainer on October 26, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*