# WhenDo vs 舒尔特·背古诗

The clearest difference is in-app purchases: WhenDo at none against 舒尔特·背古诗's 1. WhenDo also leads on ads (none vs shown) and update cadence (monthly vs every 4 months). 舒尔特·背古诗's advantage is device support (3 vs 1). On price there is nothing between them.

Both are free to download. 舒尔特·背古诗 sells 1 one-off in-app purchase. WhenDo asks for nothing beyond the download.

WhenDo ships an update monthly, 舒尔特·背古诗 every 4 months. The most recent releases landed on October 2, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | WhenDo | 舒尔特·背古诗 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Monthly** | Every 4 months |
| Monetization | Free | — |
| Size | 22 MB | 4 MB |
| Requires iOS | **8.1** | 16.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Shanghai Zhiwei Robotics Co Ltd](https://appshunter.io/developer/643548685) | [宏斌 樊](https://appshunter.io/developer/1452129040) |

## What reviewers say

### WhenDo

[App page](https://appshunter.io/ios/app/whendo/id1001086940)

This tool provides a graphical programming environment for learning Arduino. It simplifies coding by allowing users to drag and combine blocks to create programs. The app supports wireless downloads to compatible Arduino devices and utilizes a cloud server for compilation.

**Highlights:** Graphical programming with drag-and-drop blocks, Clear logic structure (When, Centre Node, Do blocks), Cloud server compilation, Wireless BLE downloads, Compatible with Bluetooth 4.0 Arduino chips

**Features:** macOS Compatibility

**In-app purchases:** none


### 舒尔特·背古诗

[App page](https://appshunter.io/ios/app/id1441186331)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 去除广告插件 | $3.99 | one-time |


## Frequently asked questions

### Is WhenDo free?

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

### Is 舒尔特·背古诗 free?

舒尔特·背古诗 is free to download, with in-app purchases available.

### Do WhenDo or 舒尔特·背古诗 have ads?

舒尔特·背古诗 shows ads; WhenDo does not.

### Which is updated more often, WhenDo or 舒尔特·背古诗?

WhenDo ships an update monthly, and 舒尔特·背古诗 every 4 months. Most recently, WhenDo was updated on October 2, 2026 and 舒尔特·背古诗 on October 15, 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.*