# Dohrnii vs TechBrain

The clearest difference is rating: TechBrain at 5.0 against Dohrnii's 4.1. TechBrain also leads on review sentiment (100% vs 80%). Dohrnii's advantage is in-app purchases (none vs 1) and ratings volume (14 vs 4). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. TechBrain sells 1 in-app purchase, starting at $4.99 per month. Dohrnii asks for nothing beyond the download.

TechBrain holds the better App Store score, 5.0 against 4.1. Both are backed by a comparable volume of ratings — 14 and 4 respectively. Written reviews point the same way: 80% of Dohrnii's written reviews are positive against 100% of TechBrain's.

Dohrnii ships an update monthly, TechBrain every 2 months. Both last shipped on June 10, 2026.

## The numbers

| Metric | Dohrnii | TechBrain |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (14 ratings)](https://appshunter.io/ios/app/dohrnii/id1639563621/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/techbrain-machine-learning/id1662166914/reviews)** |
| Number of ratings | **14** | 4 |
| Positive reviews | 80.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | — |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | **Free** | Freemium |
| Size | 56 MB | 33 MB |
| Requires iOS | 13.0 | **12.4** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [EMTN Structuring S.A.](https://appshunter.io/developer/1624492483) | [TechBrain LLC](https://appshunter.io/developer/1662166916) |

## What reviewers say

### Dohrnii

[App page](https://appshunter.io/ios/app/dohrnii/id1639563621)

This app offers an interactive and gamified approach to learning about finance and cryptocurrency. It fosters a community through social features, allowing users to compete and collaborate while gaining knowledge in blockchain technology.

**Highlights:** Gamified learning experience, Interactive finance lessons, Blockchain and crypto education, Social community features, Competitive and collaborative elements, Mobile-first learning

**In-app purchases:** none


### TechBrain

[App page](https://appshunter.io/ios/app/techbrain-machine-learning/id1662166914)

This app makes artificial intelligence and machine learning concepts accessible through interactive lessons, quizzes, and real-world examples. It caters to both beginners and experienced professionals looking to understand and excel in AI.

**Highlights:** Interactive lessons, Quizzes, Real-world examples, AI concept mastery, Beginner-friendly, Professional development

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TechBrain Pro | $4.99 | per month |


## Frequently asked questions

### Is Dohrnii free?

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

### Is TechBrain free?

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

### Which has better reviews, Dohrnii or TechBrain?

TechBrain is rated higher. Dohrnii averages 4.1 out of 5 from 14 ratings, while TechBrain averages 5.0 from 4 ratings.

### Which is updated more often, Dohrnii or TechBrain?

Dohrnii ships an update monthly, and TechBrain every 2 months. Most recently, Dohrnii was updated on June 10, 2026 and TechBrain on June 10, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*