# 信用家OA vs Garbage classification guide

The clearest difference is in-app purchases: 信用家OA at none against Garbage classification guide's 1. 信用家OA also leads on update cadence (every 2 weeks vs every 35 months) and iOS requirement (11.0 vs 13.0). On price, ads and device support there is nothing between them.

Both are free to download. Garbage classification guide sells 1 one-off in-app purchase. 信用家OA asks for nothing beyond the download.

信用家OA ships an update every 2 weeks, Garbage classification guide every 35 months. The most recent releases landed on September 19, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | 信用家OA | 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 | 46 MB | 4 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Xiamen Xinyongjia Network Technology Co., Ltd.](https://appshunter.io/developer/1175205980) | [昆 李](https://appshunter.io/developer/1480980920) |

## What reviewers say

### 信用家OA

[App page](https://appshunter.io/ios/app/oa/id1364773958)

**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 信用家OA free?

信用家OA 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 信用家OA or Garbage classification guide have ads?

Neither 信用家OA nor Garbage classification guide shows ads.

### Which is updated more often, 信用家OA or Garbage classification guide?

信用家OA ships an update every 2 weeks, and Garbage classification guide every 35 months. Most recently, 信用家OA was updated on September 19, 2026 and Garbage classification guide on September 17, 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.*