# 掌上易途 vs 三由路书

The clearest difference is in-app purchases: 掌上易途 at none against 三由路书's 4. 掌上易途 also leads on iOS requirement (11.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. 三由路书 sells 4 in-app purchases, starting at $1.99 per month. 掌上易途 asks for nothing beyond the download.

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on September 29, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | 掌上易途 | 三由路书 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (3 ratings)](https://appshunter.io/ios/app/id6499497645/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 75.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | Fortnightly |
| Size | 95 MB | 326 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [昆明易途科技有限公司](https://appshunter.io/developer/1223876809) | [智琴 刘](https://appshunter.io/developer/1743582117) |

## What reviewers say

### 掌上易途

[App page](https://appshunter.io/ios/app/id1472332767)

**Features:** macOS Compatibility

**In-app purchases:** none


### 三由路书

[App page](https://appshunter.io/ios/app/id6499497645)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 连续包月 | $1.99 | per month |
| 1个月会员 | $2.99 | one-time |
| 1年会员 | $19.99 | one-time |
| 永久会员 | $29.99 | one-time |


## Frequently asked questions

### Is 掌上易途 free?

掌上易途 is free to download, with no in-app purchases.

### Is 三由路书 free?

三由路书 is free to download, with in-app purchases available.

### Do 掌上易途 or 三由路书 have ads?

Neither 掌上易途 nor 三由路书 shows ads.

### Which is updated more often, 掌上易途 or 三由路书?

掌上易途 ships an update fortnightly, and 三由路书 fortnightly. Most recently, 掌上易途 was updated on September 29, 2026 and 三由路书 on October 13, 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.*