# 及时云 vs 光证小黑板

The clearest difference is iOS requirement: 及时云 at 9.0 against 光证小黑板's 14.0. On price, update cadence, 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.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 26, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | 及时云 | 光证小黑板 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | Monthly |
| Size | 23 MB | 71 MB |
| Requires iOS | **9.0** | 14.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | +4 | 4+ |
| Developer | [福建四创软件有限公司](https://appshunter.io/developer/539380136) | [EverBright Securities Asset Management Co.,Ltd.](https://appshunter.io/developer/1516210273) |

## What reviewers say

### 及时云

[App page](https://appshunter.io/ios/app/id1219633255)

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

**In-app purchases:** none


### 光证小黑板

[App page](https://appshunter.io/ios/app/id1542010166)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 及时云 free?

及时云 is free to download, with no in-app purchases.

### Is 光证小黑板 free?

光证小黑板 is free to download, with no in-app purchases.

### Do 及时云 or 光证小黑板 have ads?

Neither 及时云 nor 光证小黑板 shows ads.

### Which is updated more often, 及时云 or 光证小黑板?

及时云 ships an update monthly, and 光证小黑板 monthly. Most recently, 及时云 was updated on October 26, 2026 and 光证小黑板 on November 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*