# Growth Engineering App vs Vivat Lex

The clearest difference is in-app purchases: Growth Engineering App at none against Vivat Lex's 4. Vivat Lex's advantage is update cadence (every 9 days vs every 4 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Vivat Lex sells 4 in-app purchases, starting at $9.99 per 7 days. Growth Engineering App asks for nothing beyond the download.

Growth Engineering App ships an update every 4 weeks, Vivat Lex every 9 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Growth Engineering App | Vivat Lex |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 9 days** |
| Monetization | Free | — |
| Size | 80 MB | 120 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 12+ |
| Developer | [Growth Engineering](https://appshunter.io/developer/1271714033) | [Stanislav Lynnyk](https://appshunter.io/developer/1887245095) |

## What reviewers say

### Growth Engineering App

[App page](https://appshunter.io/ios/app/growth-engineering-app/id1325655644)

This app provides an engaging learning environment with interactive quests, battles, and challenges to foster lasting behavioral change. Users can reinforce learning through social discussion groups and earn badges and experience points to climb leaderboards.

**Highlights:** Learning Quests, Learning Battles, Learning Challenges, Learning Community, Incentivised Discussion Groups, Badges and Experience Points, Leaderboards

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

**In-app purchases:** none


### Vivat Lex

[App page](https://appshunter.io/ios/app/vivat-lex-sqe1-practice/id6761006445)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Access | $9.99 | per 7 days |
| Monthly Plan | $39.99 | per month |
| Quarterly Plan | $99.99 | per 3 months |
| Yearly Plan | $999.99 | per year |


## Frequently asked questions

### Is Growth Engineering App free?

Growth Engineering App is free to download, with no in-app purchases.

### Is Vivat Lex free?

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

### Do Growth Engineering App or Vivat Lex have ads?

Neither Growth Engineering App nor Vivat Lex shows ads.

### Which is updated more often, Growth Engineering App or Vivat Lex?

Growth Engineering App ships an update every 4 weeks, and Vivat Lex every 9 days. Most recently, Growth Engineering App was updated on October 24, 2026 and Vivat Lex on October 25, 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.*