# LangSim vs duzo

The clearest difference is in-app purchases: LangSim at none against duzo's 3. LangSim also leads on iOS requirement (13.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. duzo sells 3 in-app purchases, starting at $14.99 per month. LangSim asks for nothing beyond the download.

LangSim ships an update weekly, duzo every 10 days. The most recent releases landed on October 13, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | LangSim | duzo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/langsim-speak-german/id6747687411/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 10 days |
| Monetization | Free | — |
| Size | 64 MB | 13 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Betapilot](https://appshunter.io/developer/1753472049) | [Khuslen Munbat](https://appshunter.io/developer/1855262512) |

## What reviewers say

### LangSim

[App page](https://appshunter.io/ios/app/langsim-speak-german/id6747687411)

Practice German through realistic AI-powered conversations. Improve speaking, listening, and pronunciation with instant feedback and adaptive challenges. Master real-life scenarios from ordering food to job interviews.

**Highlights:** AI role-play for real conversations, Instant speaking and grammar feedback, CEFR-aligned progress tracking, Smart vocabulary and grammar review, Offline learning mode

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

**In-app purchases:** none


### duzo

[App page](https://appshunter.io/ios/app/duzo-learn-german/id6788622372)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $14.99 | per month |
| 3 Months | $34.99 | per 3 months |
| Yearly | $129.99 | per year |


## Frequently asked questions

### Is LangSim free?

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

### Is duzo free?

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

### Do LangSim or duzo have ads?

Neither LangSim nor duzo shows ads.

### Which is updated more often, LangSim or duzo?

LangSim ships an update weekly, and duzo every 10 days. Most recently, LangSim was updated on October 13, 2026 and duzo 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.*