# 21energy vs Yro Smart

The clearest difference is update cadence: 21energy at fortnightly against Yro Smart's every 8 months. 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.

21energy ships an update fortnightly, Yro Smart every 8 months. The most recent releases landed on October 20, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | 21energy | Yro Smart |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 16.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 8 months |
| Monetization | Free | — |
| Size | 43 MB | 191 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [21energy GmbH](https://appshunter.io/developer/1741551485) | [ZHEJIANG YRO NEW ENERGY CO.,LTD.](https://appshunter.io/developer/1759321952) |

## What reviewers say

### 21energy

[App page](https://appshunter.io/ios/app/21energy/id6497953701)

Easily set up and configure your Ofen and Ofen Pro heaters. Connect your device via Bluetooth to your local WiFi and manage your mining pool settings with just a few taps.

**Highlights:** Easy setup and configuration, Bluetooth connectivity, WiFi connection, Mining pool configuration, Ofen and Ofen Pro support

**In-app purchases:** none


### Yro Smart

[App page](https://appshunter.io/ios/app/yro-smart/id6575367936)

**In-app purchases:** none


## Frequently asked questions

### Is 21energy free?

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

### Is Yro Smart free?

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

### Do 21energy or Yro Smart have ads?

Neither 21energy nor Yro Smart shows ads.

### Which is updated more often, 21energy or Yro Smart?

21energy ships an update fortnightly, and Yro Smart every 8 months. Most recently, 21energy was updated on October 20, 2026 and Yro Smart on October 5, 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.*