# ChatModel vs 上下求索

The clearest difference is update cadence: ChatModel at monthly against 上下求索's every 2 months. ChatModel also leads on iOS requirement (14.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. ChatModel sells 3 in-app purchases, starting at $3.99 per 7 days and 上下求索 sells 5 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

ChatModel ships an update monthly, 上下求索 every 2 months. The most recent releases landed on October 23, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | ChatModel | 上下求索 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | — | Free |
| Size | 15 MB | 21 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 9+ | 12+ |
| Developer | [Qijie Information](https://appshunter.io/developer/1717060398) | [亿有引力](https://appshunter.io/developer/1787379474) |

## What reviewers say

### ChatModel

[App page](https://appshunter.io/ios/app/chatmodel-multiple-models/id6479516706)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Plus | $3.99 | per 7 days |
| Monthly Plus | $12.99 | per month |
| Annual Plus | $119.00 | per year |


### 上下求索

[App page](https://appshunter.io/ios/app/ai/id6741800737)

This intelligent assistant supports voice, text, and image input for Q&A and inspiration. Explore bite-sized knowledge, generate unique photos with the Time Gallery, and engage in follow-up questions for deeper understanding.

**Highlights:** Voice, text, and image input, Follow-up questions, Extended reading content, Bite-sized Knowledge module, Time Gallery photo generation, Task list and result page

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AI Creation Monthly | $3.99 | per month |
| 50 张图片加量包 | $0.99 | one-time |
| 50 Coins | $0.99 | one-time |
| 170 Coins | $3.99 | one-time |
| 420 Coins | $9.99 | one-time |


## Frequently asked questions

### Is ChatModel free?

ChatModel is free to download, with in-app purchases available.

### Is 上下求索 free?

上下求索 is free to download, with in-app purchases available.

### Do ChatModel or 上下求索 have ads?

Neither ChatModel nor 上下求索 shows ads.

### Which is updated more often, ChatModel or 上下求索?

ChatModel ships an update monthly, and 上下求索 every 2 months. Most recently, ChatModel was updated on October 23, 2026 and 上下求索 on October 16, 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.*