# thekey.academy vs 900s

The clearest difference is review sentiment: thekey.academy at 95% against 900s's 75%. thekey.academy also leads on device support (3 vs 1). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. thekey.academy sells 19 one-off in-app purchases and 900s sells 4 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

thekey.academy ships an update every 3 weeks, 900s every 10 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | thekey.academy | 900s |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/thekeyacademy/id1506467929/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | **95.0% of reviews** | 75.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 10 days** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 59 MB | 77 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [the key – academy GmbH](https://appshunter.io/developer/1838733161) | [Unit U+2467 GmbH](https://appshunter.io/developer/1781273662) |

## What reviewers say

### thekey.academy

[App page](https://appshunter.io/ios/app/thekeyacademy/id1506467929)

Access a wide range of courses and learn from industry experts through short, engaging lessons. Track your progress, earn certificates, and apply your knowledge immediately. The app offers a flexible and fun learning experience for personal and professional development.

**Highlights:** Free course trials, Bite-sized lessons (under 10 minutes), Learn from industry experts, Trackable individual progress, IHK-certified courses, Bonus content and rewards

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

**In-app purchases (19)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lizenz: PSY | $249.00 | one-time |
| Lizenz DIV (IHK) | $699.00 | one-time |
| Networking (IHK) | $699.00 | one-time |
| Lizenz Verkauf und Verhandlung | $699.00 | one-time |
| Lizenz: Digitalisierung (IHK) | $999.00 | one-time |
| Lizenz Change Management (IHK) | $999.99 | one-time |
| Lizenz: Digitalisierung (IHK) | $999.99 | one-time |
| Lizenz: Qualitätsmgmt (IHK) | $999.99 | one-time |
| Lizenz Prozessmanagement (IHK) | $999.99 | one-time |
| Lizenz: VEB (IHK) | $999.99 | one-time |
| Lizenz: HYB (IHK) | $999.99 | one-time |
| Lizenz: DAN (IHK) | $999.99 | one-time |
| Lizenz: WLB (IHK) | $999.99 | one-time |
| Lizenz Datenschutz (IHK) | $999.99 | one-time |
| Lizenz: SCM (IHK) | $999.99 | one-time |
| Lizenz PCM (IHK) | $999.99 | one-time |
| Lizenz Content Marketing (IHK) | $999.99 | one-time |
| Lizenz: CJM (IHK) | $999.99 | one-time |
| Lizenz: KIM (IHK) | $999.99 | one-time |


### 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 |
| BILDplus + 900s | $6.99 | per month |
| Ultimate | $8.99 | per month |


## Frequently asked questions

### Is thekey.academy free?

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

### Is 900s free?

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

### Do thekey.academy or 900s have ads?

Neither thekey.academy nor 900s shows ads.

### Which is updated more often, thekey.academy or 900s?

thekey.academy ships an update every 3 weeks, and 900s every 10 days. Most recently, thekey.academy was updated on October 24, 2026 and 900s on October 24, 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.*