# 复利计算机 vs Happyee Express

The clearest difference is in-app purchases: Happyee Express at none against 复利计算机's 1. Happyee Express also leads on iOS requirement (12.0 vs 15.6). 复利计算机's advantage is update cadence (every 2 months vs every 13 months). On price, ads and device support there is nothing between them.

Both are free to download. 复利计算机 sells 1 one-off in-app purchase. Happyee Express asks for nothing beyond the download.

复利计算机 ships an update every 2 months, Happyee Express every 13 months. The most recent releases landed on October 3, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | 复利计算机 | Happyee Express |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 13 months |
| Size | 41 MB | 103 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [potato](https://appshunter.io/developer/370828186) | [HAPPYEE PTE. LTD.](https://appshunter.io/developer/1542292324) |

## What reviewers say

### 复利计算机

[App page](https://appshunter.io/ios/app/id370828183)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Eliminate Advertisement | $0.99 | one-time |


### Happyee Express

[App page](https://appshunter.io/ios/app/happyee-express/id6443989201)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 复利计算机 free?

复利计算机 is free to download, with in-app purchases available.

### Is Happyee Express free?

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

### Do 复利计算机 or Happyee Express have ads?

Neither 复利计算机 nor Happyee Express shows ads.

### Which is updated more often, 复利计算机 or Happyee Express?

复利计算机 ships an update every 2 months, and Happyee Express every 13 months. Most recently, 复利计算机 was updated on October 3, 2026 and Happyee Express 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.*