# DI develop Classic vs YinJi CA

The clearest difference is update cadence: DI develop Classic at every 6 weeks against YinJi CA's every 19 months. DI develop Classic also leads on device support (3 vs 1) and iOS requirement (12.4 vs 18.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

DI develop Classic ships an update every 6 weeks, YinJi CA every 19 months. The most recent releases landed on October 15, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | DI develop Classic | YinJi CA |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 19 months |
| Size | 30 MB | 147 MB |
| Requires iOS | **12.4** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [DI develop Inc](https://appshunter.io/developer/1207004831) | [Snappy Innovation Inc.](https://appshunter.io/developer/1124557992) |

## What reviewers say

### DI develop Classic

[App page](https://appshunter.io/ios/app/di-develop-classic/id1599028647)

**Features:** macOS Compatibility

**In-app purchases:** none


### YinJi CA

[App page](https://appshunter.io/ios/app/yinji-ca/id6741873508)

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

**In-app purchases:** none


## Frequently asked questions

### Is DI develop Classic free?

DI develop Classic is free to download, with no in-app purchases.

### Is YinJi CA free?

YinJi CA is free to download, with no in-app purchases.

### Do DI develop Classic or YinJi CA have ads?

Neither DI develop Classic nor YinJi CA shows ads.

### Which is updated more often, DI develop Classic or YinJi CA?

DI develop Classic ships an update every 6 weeks, and YinJi CA every 19 months. Most recently, DI develop Classic was updated on October 15, 2026 and YinJi CA 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.*