# 估吗－专业的手机估价平台 vs 小当易换

The clearest difference is update cadence: 小当易换 at weekly against 估吗－专业的手机估价平台's every 3 months. 估吗－专业的手机估价平台's advantage is iOS requirement (10.0 vs 13.0). 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.

估吗－专业的手机估价平台 ships an update every 3 months, 小当易换 weekly. The most recent releases landed on June 11, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | 估吗－专业的手机估价平台 | 小当易换 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Size | 5 MB | 77 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hang Zhou XiangShang Electronic Commerce Co., LTD](https://appshunter.io/developer/938563429) | [重庆市当换网络科技有限公司](https://appshunter.io/developer/1676031799) |

## What reviewers say

### 估吗－专业的手机估价平台

[App page](https://appshunter.io/ios/app/id938563430)

**Features:** macOS Compatibility

**In-app purchases:** none


### 小当易换

[App page](https://appshunter.io/ios/app/id6474163985)

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

**In-app purchases:** none


## Frequently asked questions

### Is 估吗－专业的手机估价平台 free?

估吗－专业的手机估价平台 is free to download, with no in-app purchases.

### Is 小当易换 free?

小当易换 is free to download, with no in-app purchases.

### Do 估吗－专业的手机估价平台 or 小当易换 have ads?

Neither 估吗－专业的手机估价平台 nor 小当易换 shows ads.

### Which is updated more often, 估吗－专业的手机估价平台 or 小当易换?

估吗－专业的手机估价平台 ships an update every 3 months, and 小当易换 weekly. Most recently, 估吗－专业的手机估价平台 was updated on June 11, 2026 and 小当易换 on September 10, 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.*