# Tacit OA vs 凤语行

The clearest difference is iOS requirement: Tacit OA at 11.0 against 凤语行's 15.0. 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.

Tacit OA ships an update every 3 weeks, 凤语行 every 2 weeks. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Tacit OA | 凤语行 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Size | 154 MB | 62 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Jiu Tian Yun Technology (wuhan) Limited Company](https://appshunter.io/developer/1554438567) | [深圳天禧企业管理有限公司](https://appshunter.io/developer/1892234735) |

## What reviewers say

### Tacit OA

[App page](https://appshunter.io/ios/app/tacit-oa/id1554438565)

**Features:** macOS Compatibility

**In-app purchases:** none


### 凤语行

[App page](https://appshunter.io/ios/app/id6761962740)

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

**In-app purchases:** none


## Frequently asked questions

### Is Tacit OA free?

Tacit OA is free to download, with no in-app purchases.

### Is 凤语行 free?

凤语行 is free to download, with no in-app purchases.

### Do Tacit OA or 凤语行 have ads?

Neither Tacit OA nor 凤语行 shows ads.

### Which is updated more often, Tacit OA or 凤语行?

Tacit OA ships an update every 3 weeks, and 凤语行 every 2 weeks. Most recently, Tacit OA was updated on October 25, 2026 and 凤语行 on October 24, 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.*