# 公交ERP vs 天运八字

The clearest difference is in-app purchases: 公交ERP at none against 天运八字's 2. 公交ERP also leads on iOS requirement (12.0 vs 14.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. 天运八字 sells 2 in-app purchases, starting at $3.99 per month. 公交ERP asks for nothing beyond the download.

公交ERP ships an update every 2 weeks, 天运八字 fortnightly. The most recent releases landed on October 14, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | 公交ERP | 天运八字 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Fortnightly |
| Monetization | — | Free with in-app purchases |
| Size | 39 MB | 40 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Toyou Tech. Co., Ltd.](https://appshunter.io/developer/903865258) | [厦门星际港湾电商有限公司](https://appshunter.io/developer/1854750209) |

## What reviewers say

### 公交ERP

[App page](https://appshunter.io/ios/app/erp/id6446076859)

**Features:** macOS Compatibility

**In-app purchases:** none


### 天运八字

[App page](https://appshunter.io/ios/app/ai/id6764254024)

Manage birthdays and important dates with smart reminders. Offers professional Bazi readings, elemental analysis, and name suggestions based on birth data. Ideal for those who want to remember special occasions and explore traditional Chinese astrology.

**Highlights:** Birthday archive management, Smart countdown reminders, Professional Bazi chart analysis, Five elements and destiny inquiry, Auspicious day selection, Name suggestion reference, Customizable reminder rules

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 按月订阅会员 | $3.99 | per month |
| 按年订阅会员 | $9.99 | per year |


## Frequently asked questions

### Is 公交ERP free?

公交ERP is free to download, with no in-app purchases.

### Is 天运八字 free?

天运八字 is free to download, with in-app purchases available.

### Do 公交ERP or 天运八字 have ads?

Neither 公交ERP nor 天运八字 shows ads.

### Which is updated more often, 公交ERP or 天运八字?

公交ERP ships an update every 2 weeks, and 天运八字 fortnightly. Most recently, 公交ERP was updated on October 14, 2026 and 天运八字 on October 1, 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.*