# 易则易知 vs Buhler Andon

The clearest difference is update cadence: 易则易知 at every 5 weeks against Buhler Andon's every 13 months. 易则易知 also leads on device support (3 vs 1) and iOS requirement (11.0 vs 18.6). On price, ads and in-app purchases there is nothing between them.

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

易则易知 ships an update every 5 weeks, Buhler Andon every 13 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | 易则易知 | Buhler Andon |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 13 months |
| Size | 19 MB | 12 MB |
| Requires iOS | **11.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [上海易知信息科技股份有限公司](https://appshunter.io/developer/1439442031) | [杰 仲](https://appshunter.io/developer/1166068261) |

## What reviewers say

### 易则易知

[App page](https://appshunter.io/ios/app/id1502945729)

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

**In-app purchases:** none


### Buhler Andon

[App page](https://appshunter.io/ios/app/buhler-andon/id1584942532)

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

**In-app purchases:** none


## Frequently asked questions

### Is 易则易知 free?

易则易知 is free to download, with no in-app purchases.

### Is Buhler Andon free?

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

### Do 易则易知 or Buhler Andon have ads?

Neither 易则易知 nor Buhler Andon shows ads.

### Which is updated more often, 易则易知 or Buhler Andon?

易则易知 ships an update every 5 weeks, and Buhler Andon every 13 months. Most recently, 易则易知 was updated on November 3, 2026 and Buhler Andon on November 3, 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.*