# Dollar vs 产检助手

The clearest difference is price: 产检助手 at Free against Dollar's $0.99. Dollar's advantage is in-app purchases (none vs 1) and update cadence (every 4 days vs every 2 months). On ads, device support and iOS requirement there is nothing between them.

产检助手 is free to download; Dollar costs $0.99 up front. 产检助手 sells 1 one-off in-app purchase. Dollar asks for nothing beyond the download.

Dollar ships an update every 4 days, 产检助手 every 2 months. The most recent releases landed on August 24, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | Dollar | 产检助手 |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 2 months |
| Size | 1 MB | 3 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone, Apple Watch | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [辉 周](https://appshunter.io/developer/1646169543) | [爱华 刘](https://appshunter.io/developer/1797362038) |

## What reviewers say

### Dollar

[App page](https://appshunter.io/ios/app/dollar-currency-widget/id6450919353)

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases:** none


### 产检助手

[App page](https://appshunter.io/ios/app/id6748213321)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro功能订阅 | $0.99 | one-time |


## Frequently asked questions

### Is Dollar free?

Dollar costs $0.99, with no in-app purchases.

### Is 产检助手 free?

产检助手 is free to download, with in-app purchases available.

### Do Dollar or 产检助手 have ads?

Neither Dollar nor 产检助手 shows ads.

### Which is updated more often, Dollar or 产检助手?

Dollar ships an update every 4 days, and 产检助手 every 2 months. Most recently, Dollar was updated on August 24, 2026 and 产检助手 on September 16, 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.*