# 金牛运维 vs Garbage classification guide

The clearest difference is in-app purchases: 金牛运维 at none against Garbage classification guide's 1. 金牛运维 also leads on update cadence (every 2 weeks vs every 35 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Garbage classification guide sells 1 one-off in-app purchase. 金牛运维 asks for nothing beyond the download.

金牛运维 ships an update every 2 weeks, Garbage classification guide every 35 months. The most recent releases landed on October 12, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | 金牛运维 | Garbage classification guide |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 35 months |
| Monetization | — | Free with in-app purchases |
| Size | 52 MB | 4 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yancheng Jinkun Energy Saving Technology Co., Ltd.](https://appshunter.io/developer/1261669731) | [昆 李](https://appshunter.io/developer/1480980920) |

## What reviewers say

### 金牛运维

[App page](https://appshunter.io/ios/app/id1451034389)

**Features:** macOS Compatibility

**In-app purchases:** none


### Garbage classification guide

[App page](https://appshunter.io/ios/app/garbage-classification-guide/id1471588754)

Learn to sort waste with this app. It helps you quickly identify how to classify different types of garbage, supporting urban waste separation programs. Practice daily to protect your environment.

**Highlights:** Quick garbage classification query, Text input with fuzzy matching, Learn waste sorting categories, Daily practice exercises, Supports urban waste management

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $0.99 | one-time |


## Frequently asked questions

### Is 金牛运维 free?

金牛运维 is free to download, with no in-app purchases.

### Is Garbage classification guide free?

Garbage classification guide is free to download, with in-app purchases available.

### Do 金牛运维 or Garbage classification guide have ads?

Neither 金牛运维 nor Garbage classification guide shows ads.

### Which is updated more often, 金牛运维 or Garbage classification guide?

金牛运维 ships an update every 2 weeks, and Garbage classification guide every 35 months. Most recently, 金牛运维 was updated on October 12, 2026 and Garbage classification guide on October 4, 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.*