# 预检验机 vs Frog Message

The clearest difference is in-app purchases: 预检验机 at none against Frog Message's 3. 预检验机 also leads on iOS requirement (8.0 vs 16.0). Frog Message's advantage is update cadence (daily vs every 10 days). On price, ads and device support there is nothing between them.

Both are free to download. Frog Message sells 3 in-app purchases, starting at $0.99 per month. 预检验机 asks for nothing beyond the download.

预检验机 ships an update every 10 days, Frog Message daily. The most recent releases landed on October 9, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | 预检验机 | Frog Message |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/frog-message/id6450642203/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 days | **Daily** |
| Monetization | — | Free with in-app purchases |
| Size | 7 MB | 6 MB |
| Requires iOS | **8.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hang Zhou XiangShang Electronic Commerce Co., LTD](https://appshunter.io/developer/938563429) | [红玲 张](https://appshunter.io/developer/1676580816) |

## What reviewers say

### 预检验机

[App page](https://appshunter.io/ios/app/id1662737388)

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

**In-app purchases:** none


### Frog Message

[App page](https://appshunter.io/ios/app/frog-message/id6450642203)

This AI-powered assistant helps manage your SMS messages by intercepting and classifying them. It automatically organizes your incoming texts, making it easier to keep track of important communications.

**Highlights:** AI-powered SMS interception, Message classification, Automatic text organization, SMS management assistant

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $0.99 | per month |
| Quarterly | $1.99 | per 3 months |
| Yearly | $5.99 | per year |


## Frequently asked questions

### Is 预检验机 free?

预检验机 is free to download, with no in-app purchases.

### Is Frog Message free?

Frog Message is free to download, with in-app purchases available.

### Do 预检验机 or Frog Message have ads?

Neither 预检验机 nor Frog Message shows ads.

### Which is updated more often, 预检验机 or Frog Message?

预检验机 ships an update every 10 days, and Frog Message daily. Most recently, 预检验机 was updated on October 9, 2026 and Frog Message on October 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.*