# Blockchain Defi Crypto Course vs 21Pool

The clearest difference is update cadence: 21Pool at every 3 weeks against Blockchain Defi Crypto Course's every 18 months. Blockchain Defi Crypto Course's advantage is iOS requirement (12.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Blockchain Defi Crypto Course ships an update every 18 months, 21Pool every 3 weeks. The most recent releases landed on October 27, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Blockchain Defi Crypto Course | 21Pool |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 18 months | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 18 MB | 25 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Anna Fael](https://appshunter.io/developer/1473845897) | [Inter Select Service FZE LLC](https://appshunter.io/developer/1754227509) |

## What reviewers say

### Blockchain Defi Crypto Course

[App page](https://appshunter.io/ios/app/blockchain-defi-crypto-course/id6443473691)

**Features:** macOS Compatibility

**In-app purchases:** none


### 21Pool

[App page](https://appshunter.io/ios/app/21pool-crypto-mining-pool/id6504883855)

This app provides a profitable and reliable platform for cryptocurrency mining. It offers efficient mining with a fair formula, low fees, and stable connections. Users can track equipment statistics, monitor earnings, and manage workers through an intuitive interface.

**Highlights:** Efficient mining with FPPS formula, Low fees and stable connection, Real-time equipment statistics, Daily earnings and withdrawal monitoring, Worker management, User-friendly interface

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

**In-app purchases:** none


## Frequently asked questions

### Is Blockchain Defi Crypto Course free?

Blockchain Defi Crypto Course is free to download, with no in-app purchases.

### Is 21Pool free?

21Pool is free to download, with no in-app purchases.

### Do Blockchain Defi Crypto Course or 21Pool have ads?

Neither Blockchain Defi Crypto Course nor 21Pool shows ads.

### Which is updated more often, Blockchain Defi Crypto Course or 21Pool?

Blockchain Defi Crypto Course ships an update every 18 months, and 21Pool every 3 weeks. Most recently, Blockchain Defi Crypto Course was updated on October 27, 2026 and 21Pool on October 10, 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.*