# Check ETC 高速公路通行費試算 vs Flying Chalk

The clearest difference is in-app purchases: Flying Chalk at none against Check ETC 高速公路通行費試算's 1. Flying Chalk also leads on ads (none vs shown) and update cadence (monthly vs every 11 months). Check ETC 高速公路通行費試算's advantage is iOS requirement (13.0 vs 16.0). On price and device support there is nothing between them.

Both are free to download. Check ETC 高速公路通行費試算 sells 1 one-off in-app purchase. Flying Chalk asks for nothing beyond the download.

Check ETC 高速公路通行費試算 ships an update every 11 months, Flying Chalk monthly. The most recent releases landed on October 2, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Check ETC 高速公路通行費試算 | Flying Chalk |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 11 months | **Monthly** |
| Size | 6 MB | 5 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jing Shin Chen](https://appshunter.io/developer/1092940039) | [Weiyanda (Shanghai) Information Technology Co., Ltd.](https://appshunter.io/developer/6773538640) |

## What reviewers say

### Check ETC 高速公路通行費試算

[App page](https://appshunter.io/ios/app/check-etc/id1102857755)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Check ETC 專業版 | $0.99 | one-time |


### Flying Chalk

[App page](https://appshunter.io/ios/app/flying-chalk/id6790717989)

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

**In-app purchases:** none


## Frequently asked questions

### Is Check ETC 高速公路通行費試算 free?

Check ETC 高速公路通行費試算 is free to download, with in-app purchases available.

### Is Flying Chalk free?

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

### Do Check ETC 高速公路通行費試算 or Flying Chalk have ads?

Check ETC 高速公路通行費試算 shows ads; Flying Chalk does not.

### Which is updated more often, Check ETC 高速公路通行費試算 or Flying Chalk?

Check ETC 高速公路通行費試算 ships an update every 11 months, and Flying Chalk monthly. Most recently, Check ETC 高速公路通行費試算 was updated on October 2, 2026 and Flying Chalk on October 17, 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.*