# OC Safe vs 试题库

The clearest difference is update cadence: 试题库 at every 3 months against OC Safe's every 22 months. OC Safe's advantage is device support (3 vs 1) and iOS requirement (15.6 vs 17). 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.

OC Safe ships an update every 22 months, 试题库 every 3 months. The most recent releases landed on October 21, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | OC Safe | 试题库 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 22 months | **Every 3 months** |
| Size | 29 MB | 18 MB |
| Requires iOS | **15.6** | 17 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Okanagan College](https://appshunter.io/developer/436819272) | [中科软股教育科技(北京)股份有限公司](https://appshunter.io/developer/1395665821) |

## What reviewers say

### OC Safe

[App page](https://appshunter.io/ios/app/oc-safe/id1358475295)

**Features:** macOS Compatibility

**In-app purchases:** none


### 试题库

[App page](https://appshunter.io/ios/app/id1478850740)

**In-app purchases:** none


## Frequently asked questions

### Is OC Safe free?

OC Safe is free to download, with no in-app purchases.

### Is 试题库 free?

试题库 is free to download, with no in-app purchases.

### Do OC Safe or 试题库 have ads?

Neither OC Safe nor 试题库 shows ads.

### Which is updated more often, OC Safe or 试题库?

OC Safe ships an update every 22 months, and 试题库 every 3 months. Most recently, OC Safe was updated on October 21, 2026 and 试题库 on October 26, 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.*