# 心海之夏 vs 左养右学

The clearest difference is update cadence: 心海之夏 at every 9 months against 左养右学's every 20 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.

心海之夏 ships an update every 9 months, 左养右学 every 20 months. The most recent releases landed on September 17, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | 心海之夏 | 左养右学 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 months** | Every 20 months |
| Size | 787 MB | 85 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shanghai Qiuzhi WonderLab Technology Co., Ltd.](https://appshunter.io/developer/1733604127) | [珠海左养右学颂强咨询策划服务有限公司](https://appshunter.io/developer/1743330617) |

## What reviewers say

### 心海之夏

[App page](https://appshunter.io/ios/app/id6447953870)

**Features:** macOS Compatibility

**In-app purchases:** none


### 左养右学

[App page](https://appshunter.io/ios/app/id6499389402)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 心海之夏 free?

心海之夏 is free to download, with no in-app purchases.

### Is 左养右学 free?

左养右学 is free to download, with no in-app purchases.

### Do 心海之夏 or 左养右学 have ads?

Neither 心海之夏 nor 左养右学 shows ads.

### Which is updated more often, 心海之夏 or 左养右学?

心海之夏 ships an update every 9 months, and 左养右学 every 20 months. Most recently, 心海之夏 was updated on September 17, 2026 and 左养右学 on September 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.*