# Prolog Language Courses vs Edson Viana

The clearest difference is in-app purchases: Edson Viana at none against Prolog Language Courses's 23. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Prolog Language Courses sells 19 in-app purchases, starting at $7.99 per month. Edson Viana asks for nothing beyond the download.

## The numbers

| Metric | Prolog Language Courses | Edson Viana |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 54 MB | 12 MB |
| Requires iOS | 15.6 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Prolog LTD](https://appshunter.io/developer/359022156) | [Guilherme Pinho Krueger](https://appshunter.io/developer/1723496707) |

## What reviewers say

### Prolog Language Courses

[App page](https://appshunter.io/ios/app/prolog-language-courses/id718985854)

Learn new languages with interactive lessons featuring audio and text. Access dozens of free lessons, with options to upgrade to full courses for a low price. Study anytime, anywhere, with a focus on listening, reading, and speaking.

**Highlights:** Interactive audio and text lessons, Dozens of free lessons, Full course upgrades available, Learn English, French, German, Spanish, and more, Phrasebooks for various languages, Study on the go

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

**In-app purchases (19)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Speakit.tv — 1 Month | $7.99 | per month |
| Speakit.tv — 3 Months | $22.99 | per 3 months |
| Speakit.tv — 6 Months | $44.99 | per 6 months |
| Hebräisch – Sprachführer | $5.99 | one-time |
| Hébreu Manuel de conversation | $5.99 | one-time |
| HEBREO Manual de Conversación | $5.99 | one-time |
| Иврит – разговорник | $5.99 | one-time |
| HEBREW - Let's speak! | $7.99 | one-time |
| Hebrew - on Video! | $14.99 | one-time |
| Spanish - on Video! | $14.99 | one-time |
| Inglés - ¡En vídeo! | $14.99 | one-time |
| Portugués - ¡En vídeo! | $14.99 | one-time |
| Иврит по видео | $14.99 | one-time |
| Английский по видео | $14.99 | one-time |
| الإنكليزية - بالفيديو! | $14.99 | one-time |
| Hebrew Ulpan Video Course | $17.99 | one-time |
| Hebrew Verbs and Conjugations | $20.99 | one-time |
| Welcome to Hebrew | $24.99 | one-time |
| HEBREW - Let's Speak! | $24.99 | one-time |


### Edson Viana

[App page](https://appshunter.io/ios/app/edson-viana/id6738529688)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Prolog Language Courses free?

Prolog Language Courses is free to download, with in-app purchases available.

### Is Edson Viana free?

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

### Do Prolog Language Courses or Edson Viana have ads?

Neither Prolog Language Courses nor Edson Viana shows ads.

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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.*