# 900s vs linguaArbor

The clearest difference is ads: 900s at none against linguaArbor's shown. 900s also leads on update cadence (weekly vs monthly). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. 900s sells 4 in-app purchases, starting at $0.99 per month and linguaArbor sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

900s ships an update weekly, linguaArbor monthly. The most recent releases landed on September 21, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | 900s | linguaArbor |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Weekly** | Monthly |
| Monetization | Freemium | — |
| Size | 78 MB | 263 MB |
| Requires iOS | 16.4 | **16.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Unit U+2467 GmbH](https://appshunter.io/developer/1781273662) | [Phivolt Srls](https://appshunter.io/developer/1826564993) |

## What reviewers say

### 900s

[App page](https://appshunter.io/ios/app/900s/id6746439317)

Learn complex ideas through engaging, podcast-style audio episodes. Interact with AI to ask questions and explore topics in real time. Fits learning into short, 15-minute daily sessions.

**Highlights:** Podcast-style learning episodes, 15-minute daily learning sessions, AI-powered interactive Q&A, Curated content on various topics, Personalized library and progress tracking, Offline downloads with premium

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basic – monatlich | $0.99 | per month |
| Plus – monatlich | $2.99 | per month |
| Ultimate | $3.99 | per month |
| BILDplus + 900s | $6.99 | per month |


### linguaArbor

[App page](https://appshunter.io/ios/app/linguaarbor-learn-languages/id6760269164)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $3.99 | per month |
| Premium Yearly | $22.99 | per year |


## Frequently asked questions

### Is 900s free?

900s is free to download, with in-app purchases available.

### Is linguaArbor free?

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

### Do 900s or linguaArbor have ads?

linguaArbor shows ads; 900s does not.

### Which is updated more often, 900s or linguaArbor?

900s ships an update weekly, and linguaArbor monthly. Most recently, 900s was updated on September 21, 2026 and linguaArbor on September 17, 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.*