# 八字预测 vs ChatTT

The clearest difference is in-app purchases: ChatTT at none against 八字预测's 3. ChatTT also leads on iOS requirement (8.0 vs 15.6). 八字预测's advantage is ads (none vs shown) and update cadence (fortnightly vs every 2 months). On price and device support there is nothing between them.

Both are free to download. 八字预测 sells 3 in-app purchases, starting at $0.99 per 7 days. ChatTT asks for nothing beyond the download.

八字预测 ships an update fortnightly, ChatTT every 2 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | 八字预测 | ChatTT |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Fortnightly** | Every 2 months |
| Size | 4 MB | 21 MB |
| Requires iOS | 15.6 | **8.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [钟广 彭](https://appshunter.io/developer/587837465) | [晓东 蔡](https://appshunter.io/developer/1606602944) |

## What reviewers say

### 八字预测

[App page](https://appshunter.io/ios/app/id1135319217)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 订阅一周 | $0.99 | per 7 days |
| points 20 | $3.99 | one-time |
| points 50 | $7.99 | one-time |


### ChatTT

[App page](https://appshunter.io/ios/app/chattt-ai/id6449466713)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 八字预测 free?

八字预测 is free to download, with in-app purchases available.

### Is ChatTT free?

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

### Do 八字预测 or ChatTT have ads?

ChatTT shows ads; 八字预测 does not.

### Which is updated more often, 八字预测 or ChatTT?

八字预测 ships an update fortnightly, and ChatTT every 2 months. Most recently, 八字预测 was updated on November 2, 2026 and ChatTT on November 3, 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.*