# Gran Cursos Online vs Duda

The clearest difference is review sentiment: Gran Cursos Online at 77% against Duda's 22%. Gran Cursos Online also leads on iOS requirement (13.0 vs 15.0). Duda's advantage is in-app purchases (none vs 1) and rating (4.9 vs 4.4). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Gran Cursos Online sells 1 one-off in-app purchase. Duda asks for nothing beyond the download.

Duda holds the better App Store score, 4.9 against 4.4. Both are backed by a comparable volume of ratings — 39 and 104 respectively. Written reviews complicate that: 77% of Gran Cursos Online's written reviews are positive against 22% of Duda's, so the app with the better star average is not the one people write more warmly about.

Both ship on a similar rhythm, roughly every 10 days. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Gran Cursos Online | Duda |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (39 ratings)](https://appshunter.io/ios/app/gran-cursos-online/id1198315819/reviews) | **[4.9 (104 ratings)](https://appshunter.io/ios/app/duda/id6451416655/reviews)** |
| Number of ratings | 39 | **104** |
| Positive reviews | **76.7% of reviews** | 21.5% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 10 days | Every 10 days |
| Monetization | Free | Free |
| Size | 90 MB | 100 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | +4 |
| Developer | [GG EDUCACIONAL LTDA](https://appshunter.io/developer/1374648020) | [Cruzeiro Do Sul Educacional Sa.](https://appshunter.io/developer/1296966413) |

## What reviewers say

### Gran Cursos Online

[App page](https://appshunter.io/ios/app/gran-cursos-online/id1198315819)

Access comprehensive study materials for public service exams and the Bar Exam. Features include offline video and audio lessons, PDF readings, automatic study scheduling, and practice simulations. The app supports full HD video with captions and allows casting to your TV.

**Highlights:** Offline video and audio lessons, Automatic study schedule creation, Practice exam simulations, Full HD video with captions, PDF study materials, Mind maps for content retention, Casting to TV

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Assinatura Ilimitada - 30 dias | $26.99 | one-time |


### Duda

[App page](https://appshunter.io/ios/app/duda/id6451416655)

This app guides students through their academic and professional journeys. It helps manage academic life and explore career options, keeping users informed and organized.

**Highlights:** Academic life management, Career exploration, Personalized educational partner, Information and organization, Goal achievement support

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

**In-app purchases:** none


## Frequently asked questions

### Is Gran Cursos Online free?

Gran Cursos Online is free to download, with in-app purchases available.

### Is Duda free?

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

### Which has better reviews, Gran Cursos Online or Duda?

Duda is rated higher. Gran Cursos Online averages 4.4 out of 5 from 39 ratings, while Duda averages 4.9 from 104 ratings.

### Do Gran Cursos Online or Duda have ads?

Neither Gran Cursos Online nor Duda shows ads.

### Which is updated more often, Gran Cursos Online or Duda?

Gran Cursos Online ships an update every 10 days, and Duda every 10 days. Most recently, Gran Cursos Online was updated on November 2, 2026 and Duda on November 3, 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.*